| Taxon | Fauna | Country | Locality | Determinated by | Type | Number of specimens |
|---|---|---|---|---|---|---|
| Berosus albipes Fauvel [- ] | Australian | New Caledonia | Ilenou? | Fauvel | holotype | 1 |
| Berosus batesi Oliva [- ] | Amazonie | Santarem | Oliva | paratype | 50 | |
| Berosus carinatus Mouchamps [- ] | Neotropical | Brazil | Corumba | Oliva | type | 1 |
| Berosus cognitor Mouchamps [- ] | Neotropical | Paraguay | Villarica | Mouchamps | type | 1 |
| Berosus distigma Fauvel [- ] | Australian | New Caledonia | Anse Vata | Fauvel | syntype | 3 |
| Berosus forsteri Mouchamps [- ] | Neotropical | Espiritu | Oliva | paratype | 1 | |
| Berosus forsteri Mouchamps [- ] | Neotropical | Espiritu | Oliva | paratype | 1 | |
| Berosus forsteri Mouchamps [- ] | Neotropical | Espiritu | Mouchamps | paratype | 4 | |
| Berosus forsteri Mouchamps [- ] | Neotropical | Espiritu | Oliva | paratype | 2 | |
| Berosus forsteri Mouchamps [- ] | Neotropical | Espiritu | Oliva | paratype | 1 | |
| Berosus forsteri Mouchamps [- ] | Neotropical | Espiritu | Oliva | paratype | 1 | |
| Berosus forsteri Mouchamps [- ] | Neotropical | Espiritu | Oliva | paratype | 1 | |
| Berosus forsteri Mouchamps [- ] | Neotropical | Santa Rosa | Oliva | paratype | 2 | |
| Berosus gynopalpis Mouchamps [- ] | Chiquitos, Robore | Mouchamps | paratype | 1 | ||
| Berosus kulzeri Mouchamps [- ] | Neotropical | Brazil | Cachimbo | Mouchamps | paratype | 1 |
| Berosus megillus d'Orchymont [- ] | Neotropical | Brazil | Sao Paulo | Orchymont | type | 1 |
| Berosus navatus d'Orchymont [- ] | Neotropical | Brazil | Bao Vista S. Francisco | Orchymont | type | 1 |
| Berosus navatus d'Orchymont [- ] | Neotropical | Brazil | Ouricury, | Orchymont | paratype | 1 |
| Berosus navatus d'Orchymont [- ] | Neotropical | Brazil | Piauhy | Orchymont | paratype | 1 |
| Berosus navatus d'Orchymont [- ] | Neotropical | Brazil | Piauhy Fazenda | Orchymont | paratype | 1 |
| Berosus nervulus Mouchamps [- ] | Neotropical | Brazil | Corumba | Oliva | paratype | 2 |
| Berosus nervulus Mouchamps [-diutinus Mouchamps] | Neotropical | Brazil | Corumba | Oliva | paratype | 7 |
| Berosus nigropunctatus Balfour-Browne [- ] | Afrotropical | Zaire | Uélé : Monga | Balfour browne | paratype | 2 |
| Berosus pauxillus Knisch [- ] | Neotropical | Argentina | Buenos Aires | Oliva | type | 1 |
| Berosus rectangulus Mouchamps [- ] | Neotropical | Brazil | Caceres | Mouchamps | paratype | 7 |
| Berosus rectangulus Mouchamps [- ] | Neotropical | Brazil | Caceres | Mouchamps | paratype | 1 |
| Berosus secticus [-confinis Knisch] | Neotropical | Brazil | Corumba | Knisch | paratype | 1 |
| Berosus secticus [-confinis Knisch] | Neotropical | Brazil | Corumba | Knisch | paratype | 1 |
| Berosus secticus [-confinis Knisch] | Neotropical | Brazil | Corumba | Knisch | paratype | 1 |
| Berosus secticus [-confinis Knisch] | Neotropical | Brazil | Corumba | Knisch | type | 1 |
| Berosus sectilis Mouchamps [- ] | Neotropical | Paraguay | Villarica | Oliva | paratype | 1 |
| Berosus sectilis Mouchamps [- ] | Neotropical | Paraguay | Villarica | Oliva | paratype | 3 |
| Berosus sectilis Mouchamps [- ] | Neotropical | Paraguay | Villarica | Oliva | type | 1 |
| Berosus singularis Knisch [- ] | Neotropical | Brazil | Corumba | Knisch | syntype | 1 |
| Berosus stratonicus d'Orchymont [- ] | Ancon | Oliva | paratype | 1 | ||
| Berosus stratonicus d'Orchymont [- ] | Las Cruces | Oliva | paratype | 1 | ||
| Berosus (Berosus) asphaltinus Knisch [ ] | Neotropical | Brazil | Nova Teutonia | Mouchamps | allotype | 1 |
| Berosus (Berosus) bonaërensis Berg. [ ] | Neotropical | Argentina | Neuquen | Knisch | paratype | 1 |
| Berosus (Berosus) bonaërensis Berg. [ ] | Neotropical | Argentina | Neuquen | Knisch | type | 1 |
| Berosus (Berosus) cariniceps Régimbart [ ] | Afrotropical | Madagascar | Sikora | Knisch | paratype | 1 |
| Berosus (Berosus) chalcocephalus Germain [ ] | Neotropical | Bolivia | Huatajata? | paratype | 6 | |
| Berosus (Berosus) chalcocephalus Germain [ ] | Neotropical | Bolivia | La Paz | Mouchamps | paratype | 2 |
| Berosus (Berosus) chalcocephalus Germain [ ] | Neotropical | Bolivia | La Paz | Oliva | paratype | 2 |
| Berosus (Berosus) chalcocephalus Germain [andinus Mouchamps] | Huatajata | Oliva | paratype | 5 | ||
| Berosus (Berosus) cooperi d'Orchymont [ ] | Abyssinie | Hora Bishoftu | Orchymont | paratype | 1 | |
| Berosus (Berosus) cooperi d'Orchymont [ ] | Abyssinie | Zaquala | Orchymont | paratype | 1 | |
| Berosus (Berosus) dentifer Mouchamps [ ] | Mouchamps | type | 1 | |||
| Berosus (Berosus) diutinus Mouchamps [ ] | Neotropical | Brazil | Corumba | Mouchamps | paratype | 1 |
| Berosus (Berosus) diutinus Mouchamps [ ] | Neotropical | Brazil | Corumba | Mouchamps | paratype | 1 |
| Berosus (Berosus) diutinus Mouchamps [ ] | Neotropical | Brazil | Corumba | Mouchamps | type | 1 |
| Berosus (Berosus) erraticus Mouchamps [ ] | Neotropical | Brazil | Pernambuco, Bom Conselho | Mouchamps | paratype | 1 |
| Berosus (Berosus) erraticus Mouchamps [ ] | Neotropical | Brazil | S. Paulo | Mouchamps | paratype | 1 |
| Berosus (Berosus) erraticus Mouchamps [ ] | Neotropical | Brazil | S. Paulo : Umgebung | Knisch | paratype | 1 |
| Berosus (Berosus) firmius d'Orchymont [ ] | Neotropical | Brazil | Pernambuco | Orchymont | paratype | 2 |
| Berosus (Berosus) firmius d'Orchymont [ ] | Neotropical | Brazil | Pernambuco | Orchymont | paratype | 1 |
| Berosus (Berosus) firmius d'Orchymont [ ] | Neotropical | Brazil | Pernambuco | Orchymont | type | 1 |
| Berosus (Berosus) flavicans Mouchamps [ ] | Nearctic | United States of America | Mouchamps | paratype | 1 | |
| Berosus (Berosus) flavicans Mouchamps [ ] | Nearctic | United States of America | Burlington | Mouchamps | type | 1 |
| Berosus (Berosus) flindersi Blackburn [ ] | N.S. Wales | Orchymont | type in litteris | 1 | ||
| Berosus (Berosus) freyi Mouchamps [ ] | Neotropical | Brazil | Cachimbo | Mouchamps | paratype | 3 |
| Berosus (Berosus) freyi Mouchamps [ ] | Neotropical | Brazil | Cachimbo | Mouchamps | paratype | 6 |
| Berosus (Berosus) freyi Mouchamps [ ] | Neotropical | Brazil | Cachimbo | Mouchamps | type | 1 |
| Berosus (Berosus) fuscostriatus Fairmaire [ ] | Obock | Fairmaire | type in litteris | 1 | ||
| Berosus (Berosus) fuscostriatus Fairmaire [ ] | Obock | Fairmaire | type in litteris | 1 | ||
| Berosus (Berosus) gebieni Knisch [ ] | Afrotropical | Zaire | Yakoma | Knisch | lectotype | 1 |
| Berosus (Berosus) kalahariensis d'Orchymont [ ] | Tsotsorogo | Orchymont | paratype | 12 | ||
| Berosus (Berosus) kuntzeni Knisch [ ] | Afrotropical | Madagascar | Majunga | Knisch | lectotype | 1 |
| Berosus (Berosus) kuntzeni Knisch [ ] | Afrotropical | Madagascar | Majunga | Knisch | paralectotype | 1 |
| Berosus (Berosus) lenkoranus Kw. [ ] | Afrotropical | Congo Brazzaville | Kinchassa | Mouchamps | paratype | 1 |
| Berosus (Berosus) lesnei d'Orchymont [ ] | Afrotropical | Zambèze | Choupanga, près de Chemba | Orchymont | paratype | 1 |
| Berosus (Berosus) lesnei d'Orchymont [ ] | Afrotropical | Zambèze | Choupanga, près de Chemba | Orchymont | paratype | 1 |
| Berosus (Berosus) micropunctatus Mouchamps [ ] | Neotropical | Mexico, United States | Los Mechis | Mouchamps | type | 1 |
| Berosus (Berosus) nervulus Mouchamps [ ] | Neotropical | Brazil | Corumba | Mouchamps | allotype | 1 |
| Berosus (Berosus) nervulus Mouchamps [ ] | Neotropical | Brazil | Corumba | Mouchamps | paratype | 9 |
| Berosus (Berosus) nervulus Mouchamps [ ] | Neotropical | Brazil | Corumba | Mouchamps | paratype | 9 |
| Berosus (Berosus) nervulus Mouchamps [ ] | Neotropical | Brazil | Corumba | Mouchamps | paratype | 2 |
| Berosus (Berosus) nervulus Mouchamps [ ] | Neotropical | Brazil | Corumba | Mouchamps | type | 1 |
| Berosus (Berosus) nervulus Mouchamps [ ] | Neotropical | Brazil | Corumba | Oliva | paratype | 2 |
| Berosus (Berosus) nervulus Mouchamps [ ] | Neotropical | Brazil | Corumba | Oliva | paratype | 1 |
| Berosus (Berosus) nervulus Mouchamps [ ] | Neotropical | Brazil | Corumba | Oliva | paratype | 5 |
| Berosus (Berosus) nigrinus Knisch [ ] | Neotropical | Brazil | Corumba | Knisch | type | 1 |
| Berosus (Berosus) pauxosus d'Orchymont [ ] | Neotropical | Argentina | Chaco de Santiago | Orchymont | paratype | 3 |
| Berosus (Berosus) pauxosus d'Orchymont [ ] | Neotropical | Argentina | Chaco de Santiago | Orchymont | paratype | 1 |
| Berosus (Berosus) pauxosus d'Orchymont [ ] | Neotropical | Argentina | Chaco de Santiago | Orchymont | paratype | 2 |
| Berosus (Berosus) pauxosus d'Orchymont [ ] | Neotropical | Paraguay | Parana-Ihamisi | Orchymont | paratype | 1 |
| Berosus (Berosus) pluripunctatus Mouchamps [ ] | Neotropical | Brazil | Caceres | Mouchamps | paratype | 5 |
| Berosus (Berosus) pluripunctatus Mouchamps [ ] | Neotropical | Brazil | Corumba | Mouchamps | type | 1 |
| Berosus (Berosus) quartinius d'Orchymont [ ] | Tavior | Orchymont | paratype | 1 | ||
| Berosus (Berosus) quartinius d'Orchymont [ ] | Australian | Australia | Sydney | Orchymont | paratype | 1 |
| Berosus (Berosus) quartinius d'Orchymont [ ] | Australian | Australia | Sydney | Orchymont | paratype | 1 |
| Berosus (Berosus) quartinius d'Orchymont [ ] | Australian | Australia | Sydney | Orchymont | type | 1 |
| Berosus (Berosus) signaticollis [punctipennis Harold] | Hakodate | Knisch | paralectotype | 1 | ||
| Berosus (Berosus) stribalus d'Orchymont [ ] | Neotropical | Cuba | Orchymont | type | 1 | |
| Berosus (Berosus) stribalus d'Orchymont [ ] | Neotropical | Cuba | Cayamas | Orchymont | paratype | 1 |
| Berosus (Berosus) thaxteri Mouchamps [ ] | paratype | 19 | ||||
| Berosus (Berosus) thaxteri Mouchamps [ ] | Hessian | Mouchamps | paratype | 3 | ||
| Berosus (Berosus) thaxteri Mouchamps [ ] | Kittery Point | Mouchamps | allotype | 1 | ||
| Berosus (Berosus) thaxteri Mouchamps [ ] | Kittery Point | Mouchamps | paratype | 1 | ||
| Berosus (Berosus) thaxteri Mouchamps [ ] | Kittery Point | Mouchamps | paratype | 5 | ||
| Berosus (Berosus) thaxteri Mouchamps [ ] | Kittery Point | Mouchamps | type | 1 | ||
| Berosus (Berosus) thaxteri Mouchamps [ ] | Nearctic | United Kingdom | Esopus | Mouchamps | paratype | 2 |
| Berosus (Berosus) thaxteri Mouchamps [ ] | Nearctic | United States of America | Toxawa | Mouchamps | paratype | 1 |
| Berosus (Berosus) thaxteri Mouchamps [ ] | Nearctic | United States of America | Tyngsboro | Mouchamps | paratype | 4 |
| Berosus (Berosus) thaxteri Mouchamps [ ] | Nearctic | United States of America | Tyngsboro | Mouchamps | paratype | 5 |
| Berosus (Berosus) thaxteri Mouchamps [ ] | Nearctic | United States of America | Tyngsboro | Mouchamps | paratype | 4 |
| Berosus (Berosus) vilipendus Mouchamps [ ] | Neotropical | Brazil | Corumba | Mouchamps | allotype | 1 |
| Berosus (Berosus) vilipendus Mouchamps [ ] | Neotropical | Brazil | Corumba | Mouchamps | paratype | 18 |
| Berosus (Berosus) vilipendus Mouchamps [ ] | Neotropical | Brazil | Corumba | Mouchamps | paratype | 2 |
| Berosus (Berosus) vilipendus Mouchamps [ ] | Neotropical | Brazil | Corumba | Mouchamps | paratype | 19 |
| Berosus (Berosus) vilipendus Mouchamps [ ] | Neotropical | Brazil | Corumba | Mouchamps | type | 1 |
| Berosus (Berosus) vilipendus Mouchamps [ ] | Neotropical | Brazil | Corumba | Oliva | paratype | 3 |
| Berosus (Berosus) vilipendus Mouchamps [ ] | Neotropical | Brazil | Corumba | Oliva | paratype | 3 |
| Berosus (Berosus) vilipendus Mouchamps [ ] | Neotropical | Brazil | Corumba | Oliva | paratype | 12 |
| Berosus (Enoplurus) ambogugnus Mouchamps [ ] | Neotropical | Espiritu | Mouchamps | paratype | 1 | |
| Berosus (Enoplurus) bibulus Mouchamps [ ] | Afrotropical | Congo Brazzaville | Kinchassa | Mouchamps | paratype | 1 |
| Berosus (Enoplurus) bibulus Mouchamps [ ] | Afrotropical | Katanga | Mouchamps | paratype | 1 | |
| Berosus (Enoplurus) bibulus Mouchamps [ ] | Afrotropical | Katanga | Mouchamps | type | 1 | |
| Berosus (Enoplurus) bispina Reiche & Saulcy [ ] | Palearctic | Egypt | Schodl | holotype | 1 | |
| Berosus (Enoplurus) borellei Knisch [ ] | Neotropical | Bolivia | Caizad?? | Knisch | type | 1 |
| Berosus (Enoplurus) decolor Knisch [ ] | Neotropical | Paraguay | Trinidad | Knisch | type | 1 |
| Berosus (Enoplurus) ducalis Mouchamps [ ] | Afrotropical | Zaire | Tshuapa : Lukolela | Mouchamps | paratype | 1 |
| Berosus (Enoplurus) erraticus Mouchamps [ ] | Neotropical | Brazil | Alto da Serra | Oliva | paratype | 3 |
| Berosus (Enoplurus) erraticus Mouchamps [ ] | Neotropical | Brazil | Campo Bello | Oliva | paratype | 1 |
| Berosus (Enoplurus) erraticus Mouchamps [ ] | Neotropical | Brazil | Sao Paulo | Mouchamps | allotype | 1 |
| Berosus (Enoplurus) erraticus Mouchamps [ ] | Neotropical | Brazil | Sao Paulo | Mouchamps | type | 1 |
| Berosus (Enoplurus) erraticus Mouchamps [ ] | Neotropical | Brazil | Sao Paulo | Oliva | paratype | 2 |
| Berosus (Enoplurus) erraticus Mouchamps [ ] | Neotropical | Brazil | Sao Paulo | Oliva | paratype | 2 |
| Berosus (Enoplurus) erraticus Mouchamps [ ] | Neotropical | Brazil | Sao Paulo | Oliva | paratype | 1 |
| Berosus (Enoplurus) festai Knisch [ ] | Gualaquiza | Knisch | type | 2 | ||
| Berosus (Enoplurus) ghanicoïdes d'Orchymont [ ] | Australian | Peru | Sivia | Orchymont | paratype | 1 |
| Berosus (Enoplurus) ghanicus d'Orchymont [ ] | Neotropical | Rio Comanchi?? | Orchymont | type | 1 | |
| Berosus (Enoplurus) indicus Motschulsky [indus Orchymont] | Konbir | Orchymont | type | 1 | ||
| Berosus (Enoplurus) labelli Mouchamps [ ] | Afrotropical | Tshuapa : Bamania | Mouchamps | paratype | 1 | |
| Berosus (Enoplurus) labelli Mouchamps [ ] | Afrotropical | Yangambi | Mouchamps | paratype | 1 | |
| Berosus (Enoplurus) labelli Mouchamps [ ] | Afrotropical | Zaire | Léopoldville | Mouchamps | paratype | 2 |
| Berosus (Enoplurus) labelli Mouchamps [ ] | Afrotropical | Zaire | Tshuapa : Bokuma | Mouchamps | paratype | 1 |
| Berosus (Enoplurus) labelli Mouchamps [ ] | Neotropical | Ecuador | Bokuma | Mouchamps | paratype | 1 |
| Berosus (Enoplurus) leleupi Mouchamps [ ] | Afrotropical | Zaire | Elisabethville | Mouchamps | paratype | 1 |
| Berosus (Enoplurus) tectonicus Mouchamps [ ] | Madibira | Mouchamps | allotype | 1 | ||
| Berosus (Enoplurus) tectonicus Mouchamps [ ] | Madibira | Mouchamps | paratype | 1 | ||
| Berosus (Enoplurus) tectonicus Mouchamps [ ] | Madibira | Mouchamps | paratype | 3 | ||
| Berosus (Enoplurus) tectonicus Mouchamps [ ] | Madibira | Mouchamps | type | 1 | ||
| Berosus (Enoplurus) tetracanthus Régimbart [ ] | Afrotropical | Kenya | Samturu | Régimbart | paralectotype | 1 |
| Berosus (Enoplurus) tetracanthus Régimbart [ ] | Afrotropical | Kenya | Samturu | Régimbart | paralectotype | 1 |
| Berosus (Enoplurus) undatus F. [sinaloensis Mouchamps] | Neotropical | Mexico, United States | Venodio | Mouchamps | type | 1 |
| Hydraena abdita d'Orchymont [- ] | Afrotropical | Uganda | env. De Fort Portal | D orchymont | paratype | 1 |
| Hydraena abdita d'Orchymont [- ] | Afrotropical | Uganda | Rouboka | D orchymont | paratype | 1 |
| Hydraena abyssinica Rég. [- ] | Eritrea | D orchymont | paratype | 1 | ||
| Hydraena accurata d'Orchymont [- ] | ? | Fount. Grove. | D orchymont | paratype | 1 | |
| Hydraena accurata d'Orchymont [- ] | ? | Fount. Grove. | D orchymont | paratype | 1 | |
| Hydraena adrastea d'Orchymont [- ] | Afrotropical | Kenya | D orchymont | paratype | 1 | |
| Hydraena adrastea d'Orchymont [- ] | Afrotropical | Uganda | Kampala | D orchymont | paratype | 1 |
| Hydraena adrastea d'Orchymont [- ] | Afrotropical | Uganda | Kampala | D orchymont | paratype | 1 |
| Hydraena adrastea d'Orchymont [- ] | Afrotropical | Uganda | Kampala | D orchymont | paratype | 2 |
| Hydraena adrastea d'Orchymont [- ] | Afrotropical | Uganda | Kampala | D orchymont | paratype | 1 |
| Hydraena adrastea d'Orchymont [- ] | Afrotropical | Uganda | Kampala | D orchymont | paratype | 4 |
| Hydraena adrastea d'Orchymont [- ] | Afrotropical | Uganda | Kampala | D orchymont | paratype | 2 |
| Hydraena affusa d'Orchymont [- ] | Palearctic | Spain | Bocca del Asno | D orchymont | paratype | 2 |
| Hydraena affusa d'Orchymont [- ] | Palearctic | Spain | Escorial - Guadara | D orchymont | paratype | 13 |
| Hydraena affusa d'Orchymont [- ] | Palearctic | Spain | Escorial - Guadara | D orchymont | paratype | 13 |
| Hydraena affusa d'Orchymont [- ] | Palearctic | Spain | Escorial - Guadara | Janssens | type | 1 |
| Hydraena alia d'Orchymont [- ] | ? | Aquilas | D orchymont | paratype | 4 | |
| Hydraena alia d'Orchymont [- ] | ? | Aquilas | D orchymont | paratype | 4 | |
| Hydraena andreinii d'Orchymont [- ] | ? | Lippiano | D orchymont | paratype | 5 | |
| Hydraena andreinii d'Orchymont [- ] | ? | Lippiano | D orchymont | paratype | 4 | |
| Hydraena balearica d'Orchymont [- ] | ? | Mallorca | D orchymont | paratype | 5 | |
| Hydraena balearica d'Orchymont [- ] | ? | Mallorca | D orchymont | paratype | 4 | |
| Hydraena balearica d'Orchymont [- ] | ? | Mallorca | D orchymont | type | 1 | |
| Hydraena balearica d'Orchymont [- ] | ? | Pollenza, Mallozia | D orchymont | paratype | 3 | |
| Hydraena balearica d'Orchymont [- ] | Palearctic | Balearic Is. | D orchymont | 1 | ||
| Hydraena balli d' Orchymont [- ] | Palearctic | Cyprus | Kalapanayiotis | D orchymont | paratype | 6 |
| Hydraena balli d' Orchymont [- ] | Palearctic | Cyprus | Kalapanayiotis | Janssens | paratype | 8 |
| Hydraena balli d' Orchymont [- ] | Palearctic | Cyprus | Palaeomyios | D orchymont | paratype | 2 |
| Hydraena balli d' Orchymont [- ] | Palearctic | Cyprus | Palaeomyios | D orchymont | paratype | 4 |
| Hydraena balli d' Orchymont [- ] | Palearctic | Cyprus | Pedoulas | D orchymont | paratype | 1 |
| Hydraena balli d' Orchymont [- ] | Palearctic | Cyprus | Pedoulas | D orchymont | paratype | 1 |
| Hydraena balli d' Orchymont [- ] | Palearctic | Cyprus | Subolists??(Ayia) | D orchymont | paratype | 1 |
| Hydraena barrosi d' Orchymont [- ] | ? | S. Martinho | D orchymont | paratype | 1 | |
| Hydraena barrosi d' Orchymont [- ] | ? | S. Martinho | D orchymont | paratype | 3 | |
| Hydraena barrosi d' Orchymont [- ] | Palearctic | France | Rhune, R. de Chantakorène | D orchymont | paratype | 1 |
| Hydraena barrosi d' Orchymont [- ] | Palearctic | France | Rhune, R. de Chantakorèse | D orchymont | paratype | 1 |
| Hydraena barrosi d' Orchymont [- ] | Palearctic | France | Rhune, S. Ignace | D orchymont | paratype | 2 |
| Hydraena barrosi d' Orchymont [- ] | Palearctic | France | Rhune, St. Ignace | D orchymont | paratype | 1 |
| Hydraena barrosi d' Orchymont [- ] | Palearctic | France | Rhune, Uharca | D orchymont | paratype | 1 |
| Hydraena barrosi d' Orchymont [- ] | Palearctic | France | Rhune, Uharca | Janssens | type | 1 |
| Hydraena bihamata Champion [- ] | Asiatic | India | Kumdon | D orchymont | paratype | 1 |
| Hydraena bihamata Champion [- ] | Asiatic | India | Kumdon | Janssens | paratype | 1 |
| Hydraena bisulcata Rey [- ] | Cherrat | Berthelemy | paratype | 4 | ||
| Hydraena bisulcata Rey [- ] | Cherrat | Berthelemy | type | 1 | ||
| Hydraena bolivari [- ] | Palearctic | Spain | Cordoba, Arboles | D orchymont | type | 1 |
| Hydraena bolivari [- ] | Palearctic | Spain | Cordoba, Arboles | D orchymont | paratype | 7 |
| Hydraena bolivari [- ] | Palearctic | Spain | Cordoba, Arboles | D orchymont | paratype | 7 |
| Hydraena bolivari [- ] | Palearctic | Spain | Cordoba, Arboles | D orchymont | paratype | 24 |
| Hydraena bolivari [- ] | Palearctic | Spain | Cordoba, Arboles | D orchymont | paratype | 29 |
| Hydraena bolivari [- ] | Palearctic | Spain | Cordoba, Arboles | D orchymont | paratype | 2 |
| Hydraena bolivari [- ] | Palearctic | Spain | Cordoba, Arboles | D orchymont | paratype | 3 |
| Hydraena bolivari d' Orchymont [- ] | Palearctic | Spain | Cordoba | type | 1 | |
| Hydraena bolivari d' Orchymont [- ] | Palearctic | Spain | Cordoba, Arboles | paratype | 72 | |
| Hydraena borbonica Fairmaire [- ] | ? | ? | D orchymont | paratype | 1 | |
| Hydraena bottcheri d' Orchymont [- ] | Pageanjan | D orchymont | type | 1 | ||
| Hydraena brevis Sharp [- ] | Neotropical | Guatemala | San Joaquin | paratype | 1 | |
| Hydraena bromleyae Jach [- ] | Palearctic | Israel | Mahjar | Jach | paratype | 1 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Arboles | D orchymont | paratype | 5 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Arboles | D orchymont | paratype | 7 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Arboles | D orchymont | paratype | 32 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Arboles | D orchymont | paratype | 27 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Arboles | D orchymont | paratype | 21 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Arboles | D orchymont | paratype | 10 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Cordoba | D orchymont | paratype | 4 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Cordoba | D orchymont | paratype | 3 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Guadaibullon | D orchymont | paratype | 10 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Guadaibullon | D orchymont | paratype | 1 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Guadaibullon | Janssens | type | 1 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Guadalbullon | D orchymont | paratype | 19 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Maitena, Rio Xenil | D orchymont | paratype | 2 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Maitena, Rio Xenil | D orchymont | paratype | 3 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Rio Liche | D orchymont | paratype | 2 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Rio Parizoso | D orchymont | paratype | 1 |
| Hydraena capta d'Orchymont [- ] | Palearctic | Spain | Rio Parizoso | D orchymont | paratype | 1 |
| Hydraena carinipennis d'Orchymont [- ] | Nearctique | Santa Barbara | D orchymont | type | 1 | |
| Hydraena carri d'Orchymont [- ] | Woodstock | D orchymont | paratype | 1 | ||
| Hydraena carri d'Orchymont [- ] | Nearctique | Canada | Edmonton | D orchymont | paratype | 1 |
| Hydraena carri d'Orchymont [- ] | Nearctique | Canada | Edmonton | D orchymont | paratype | 1 |
| Hydraena cirrata Champion [- ] | Asiatic | India | Kumson | D orchymont | paratype | 2 |
| Hydraena cirrata Champion [- ] | Asiatic | India | Kumson | D orchymont | paratype | 2 |
| Hydraena compressipilis [- ] | Asiatic | Taiwan | Taipei Hsien | Jach et diaz | paratype | 1 |
| Hydraena concinna d'Orchymont [- ] | Asiatic | Hoa Binh | D orchymont | paratype | 1 | |
| Hydraena concinna d'Orchymont [- ] | Asiatic | Hoa Binh | D orchymont | paratype | 5 | |
| Hydraena concinna d'Orchymont [- ] | Asiatic | Hoa Binh | D orchymont | type | 1 | |
| Hydraena concinna d'Orchymont [- ] | Asiatic | Java | Ranoe Klakah | D orchymont | paratype | 1 |
| Hydraena connexa d'Orchymont [- ] | Asiatic | Hoa Binh | D orchymont | paratype | 1 | |
| Hydraena connexa d'Orchymont [- ] | Asiatic | Hoa Binh | D orchymont | type | 1 | |
| Hydraena coomani d'Orchymont [- ] | Asiatic | Hoa Binh | D orchymont | paratype | 2 | |
| Hydraena coomani d'Orchymont [- ] | Asiatic | Hoa Binh | D orchymont | type | 1 | |
| Hydraena corinna d'Orchymont [- ] | Palearctic | Portugal | Busaco | D orchymont | paratype | 1 |
| Hydraena corinna d'Orchymont [- ] | Palearctic | Spain | Guadarrama | D orchymont | paratype | 2 |
| Hydraena corinna d'Orchymont [- ] | Palearctic | Spain | Escorial-Guadara | Janssens | type | 1 |
| Hydraena corinna d'Orchymont [- ] | Palearctic | Spain | Fuente El Batan | D orchymont | paratype | 5 |
| Hydraena corinna d'Orchymont [- ] | Palearctic | Spain | Fuente El Batan | D orchymont | paratype | 3 |
| Hydraena corinna d'Orchymont [- ] | Palearctic | Spain | Guadarama | D orchymont | paratype | 3 |
| Hydraena corinna d'Orchymont [- ] | Palearctic | Spain | S. Martino | D orchymont | paratype | 1 |
| Hydraena corinna d'Orchymont [- ] | Palearctic | Spain | San Martino | D orchymont | paratype | 1 |
| Hydraena corinna d'Orchymont [- ] | Palearctic | Spain | Sra. Guadarrama | D orchymont | paratype | 2 |
| Hydraena corrugis d'Orchymont [- ] | ? | S. Martinho | D orchymont | paratype | 1 | |
| Hydraena corrugis d'Orchymont [- ] | Palearctic | France | Chantakorène | D orchymont | paratype | 1 |
| Hydraena corrugis d'Orchymont [- ] | Palearctic | France | Chantokorène | D orchymont | paratype | 1 |
| Hydraena corrugis d'Orchymont [- ] | Palearctic | France | La Rhune | D orchymont | paratype | 3 |
| Hydraena corrugis d'Orchymont [- ] | Palearctic | France | La Rhune | D orchymont | paratype | 1 |
| Hydraena corrugis d'Orchymont [- ] | Palearctic | France | Rhune | D orchymont | paratype | 1 |
| Hydraena corrugis d'Orchymont [- ] | Palearctic | France | Rhune | D orchymont | type | 1 |
| Hydraena corrugis d'Orchymont [- ] | Palearctic | France | Rhune | D orchymont | paratype | 2 |
| Hydraena corrugis d'Orchymont [- ] | Palearctic | France | Rhune, R. de Chantakorène | D orchymont | paratype | 1 |
| Hydraena corrugis d'Orchymont [- ] | Palearctic | France | Rhune, R. de Chantakorèse | D orchymont | paratype | 1 |
| Hydraena corrugis d'Orchymont [- ] | Palearctic | France | Rhune, S. Ionace | D orchymont | paratype | 1 |
| Hydraena corrugis d'Orchymont [- ] | Palearctic | France | Rhune, Uharca | D orchymont | paratype | 1 |
| Hydraena dimorpha d'Orchymont [- ] | ? | N.E. Assam | D orchymont | paratype | 1 | |
| Hydraena eichleri d'Orchymont [- ] | Tyflis | Janssens | type | 1 | ||
| Hydraena eponi Jach [- ] | Palearctic | Poland | Niksicko | Jach | paratype | 2 |
| Hydraena errina d'Orchymont [- ] | Afrotropical | Uganda | Kampala | D orchymont | paratype | 1 |
| Hydraena errina d'Orchymont [- ] | Afrotropical | Uganda | Ounyoro | D orchymont | paratype | 1 |
| Hydraena errina d'Orchymont [- ] | Afrotropical | Uganda | Ounyoro | D orchymont | paratype | 1 |
| Hydraena eryx d'Orchymont [- ] | Afrotropical | Uganda | env. de Fort Portal | D orchymont | paratype | 1 |
| Hydraena eryx d'Orchymont [- ] | Afrotropical | Uganda | Kampala | D orchymont | paratype | 1 |
| Hydraena eryx d'Orchymont [- ] | Afrotropical | Uganda | Ounyoro | D orchymont | paratype | 1 |
| Hydraena eryx d'Orchymont [- ] | Afrotropical | Uganda | Ounyoro | D orchymont | paratype | 2 |
| Hydraena feuerborni d'Orchymont [- ] | Asiatic | Java | Tjibodas | D orchymont | paratype | 4 |
| Hydraena feuerborni d'Orchymont [- ] | Asiatic | Java | Tjibodas | D orchymont | paratype | 7 |
| Hydraena feuerborni d'Orchymont [- ] | Asiatic | Java | Tjibodas | D orchymont | type | 1 |
| Hydraena finita d'Orchymont [- ] | Karyaes | D orchymont | paratype | 31 | ||
| Hydraena finita d'Orchymont [- ] | Karyaes | D orchymont | paratype | 24 | ||
| Hydraena finita d'Orchymont [- ] | Karyaes | D orchymont | paratype | 1 | ||
| Hydraena finita d'Orchymont [- ] | Karyaes | D orchymont | paratype | 1 | ||
| Hydraena finita d'Orchymont [- ] | Vrontados | D orchymont | paratype | 9 | ||
| Hydraena finita d'Orchymont [- ] | Vrontados | D orchymont | paratype | 7 | ||
| Hydraena finita d'Orchymont [- ] | Vrontados | D orchymont | paratype | 18 | ||
| Hydraena finita d'Orchymont [- ] | Vrontados | D orchymont | paratype | 34 | ||
| Hydraena finita d'Orchymont [- ] | Vrontados | D orchymont | paratype | 21 | ||
| Hydraena finita d'Orchymont [- ] | Vrontados | D orchymont | paratype | 18 | ||
| Hydraena finita d'Orchymont [- ] | Asia minor occid. | Tachtali Koï | D orchymont | paratype | 8 | |
| Hydraena finita d'Orchymont [- ] | Asiatic | Asia minor occid. | Tachtali Koï | D orchymont | paratype | 2 |
| Hydraena finita d'Orchymont [- ] | Asiatic | Asia minor occid. | Tachtali Koï | D orchymont | paratype | 11 |
| Hydraena finita d'Orchymont [- ] | Asiatic | Asia minor occid. | Tachtali Koï | D orchymont | type | 1 |
| Hydraena fontana d'Orchymont [- ] | Madras | D orchymont | paratype | 3 | ||
| Hydraena fontana d'Orchymont [- ] | Madras | D orchymont | paratype | 2 | ||
| Hydraena formula d'Orchymont [- ] | Asiatic | D orchymont | paratype | 1 | ||
| Hydraena formula d'Orchymont [- ] | Asiatic | D orchymont | paratype | 2 | ||
| Hydraena formula d'Orchymont [- ] | Asiatic | D orchymont | type | 1 | ||
| Hydraena georgiades d'Orchymont [- ] | Taygetos | D orchymont | paratype | 2 | ||
| Hydraena georgiades d'Orchymont [- ] | Taygetos | D orchymont | paratype | 2 | ||
| Hydraena georgiades d'Orchymont [- ] | Taygetos | D orchymont | type | 1 | ||
| Hydraena germaini d'Orchymont [- ] | Neotropical | Bolivia | Cocha Bamba | D orchymont | paratype | 1 |
| Hydraena gnatella d'Orchymont [- ] | Asiatic | Asie mineure occid. | Ekis Dere | D orchymont | paratype | 8 |
| Hydraena gnatella d'Orchymont [- ] | Asiatic | Asie mineure occid. | Ekis Dere | D orchymont | paratype | 4 |
| Hydraena gnatella d'Orchymont [- ] | Asiatic | Asie mineure occid. | Ekis Dere | D orchymont | type | 1 |
| Hydraena gnatelloides d'Orchymont [- ] | Asiatic | Asie mineure | Aruf | D orchymont | paratype | 2 |
| Hydraena gnatelloides d'Orchymont [- ] | Asiatic | Asie mineure | Aruf | D orchymont | paratype | 1 |
| Hydraena gnatelloides d'Orchymont [- ] | Asiatic | Asie mineure | Aruf | D orchymont | type | 1 |
| Hydraena graphica d'Orchymont [- ] | ? | Parnass | D orchymont | paratype | 10 | |
| Hydraena graphica d'Orchymont [- ] | ? | Parnass | D orchymont | paratype | 15 | |
| Hydraena graphica d'Orchymont [- ] | ? | Parnass | Janssens | paratype | 1 | |
| Hydraena grata d'Orchymont [- ] | ? | Hagiasos | D orchymont | paratype | 8 | |
| Hydraena grata d'Orchymont [- ] | ? | Hagiasos | D orchymont | paratype | 1 | |
| Hydraena grata d'Orchymont [- ] | ? | Hagiasos | D orchymont | type | 1 | |
| Hydraena grata d'Orchymont [- ] | ? | Revma, Kuruntere | D orchymont | paratype | 33 | |
| Hydraena grata d'Orchymont [- ] | ? | Revma, Kuruntere | D orchymont | paratype | 12 | |
| Hydraena grata d'Orchymont [- ] | Asiatic | Asie min. | Elmall | D orchymont | paratype | 1 |
| Hydraena grata d'Orchymont [- ] | Asiatic | Asie min. occid. | Ekis Bere | D orchymont | paratype | 1 |
| Hydraena grata d'Orchymont [- ] | Asiatic | Asie min. occid. | Kyzikos | D orchymont | paratype | 1 |
| Hydraena grata d'Orchymont [- ] | Asiatic | Asie min. occid; | Mansa Dag?? | D orchymont | type | 1 |
| Hydraena grata d'Orchymont [- ] | Palearctic | Europa or. | ? | D orchymont | paratype | 3 |
| Hydraena grata d'Orchymont [- ] | Palearctic | Europe orient. | ? | D orchymont | paratype | 1 |
| Hydraena gressa d'Orchymont [- ] | Asiatic | Asie min. | Elmall | Janssens | type | 1 |
| Hydraena griphus d'Orchymont [- ] | Asiatic | Asie min. | Elmall | D orchymont | paratype | 1 |
| Hydraena griphus d'Orchymont [- ] | Asiatic | Asie min. | Elmall | D orchymont | paratype | 12 |
| Hydraena griphus d'Orchymont [- ] | Asiatic | Asie min. | Elmall | Janssens | type | 1 |
| Hydraena grouvellei d'Orchymont [- ] | Neotropical | Mexico, United States | D orchymont | paratype | 1 | |
| Hydraena guadelupensis d'Orchymont [- ] | Neotropical | Guadeloupe | D orchymont | type | 1 | |
| Hydraena guadelupensis d'Orchymont [- ] | Neotropical | Guadeloupe | Trois-Rivières | D orchymont | paratype | 2 |
| Hydraena helena d'Orchymont [- ] | ? | Graecia | D orchymont | paratype | 2 | |
| Hydraena helena d'Orchymont [- ] | ? | Graecia | D orchymont | paratype | 1 | |
| Hydraena helena d'Orchymont [- ] | ? | Graecia | D orchymont | type | 1 | |
| Hydraena imperatrix Knix [- ] | Palearctic | Italy | Sta. Eufemia | Janssens | type | 1 |
| Hydraena imperatrix Kniz [- ] | Palearctic | Italy | Sta. Eufemia | Kniz | type | 1 |
| Hydraena inapicipalpis Pic [- ] | Palearctic | France | Rhune (Uharca) | Janssens | type | 1 |
| Hydraena incurva d'Orchymont [- ] | ? | Chembar nagor | D orchymont | type | 1 | |
| Hydraena indica d'Orchymont [- ] | ? | Khandesh | D orchymont | paratype | 2 | |
| Hydraena insita d'Orchymont [- ] | Asiatic | Batoeriti | D orchymont | paratype | 1 | |
| Hydraena insita d'Orchymont [- ] | Asiatic | Java | Ranoe Bedali | D orchymont | paratype | 1 |
| Hydraena insita d'Orchymont [- ] | Asiatic | Java | Ranoe pakis | D orchymont | paratype | 28 |
| Hydraena insita d'Orchymont [- ] | Asiatic | Java | Ranoe Pakis | D orchymont | paratype | 19 |
| Hydraena insita d'Orchymont [- ] | Asiatic | Sumatra | Da Ranaoe | D orchymont | paratype | 2 |
| Hydraena insita d'Orchymont [- ] | Asiatic | Sumatra | Da Ranaoe | D orchymont | paratype | 3 |
| Hydraena insita d'Orchymont [- ] | Asiatic | Sumatra | Da Ranaoe | D orchymont | type | 1 |
| Hydraena insita d'Orchymont [- ] | Asiatic | Sumatra | Moesi | D orchymont | paratype | 1 |
| Hydraena insita d'Orchymont [- ] | Asiatic | Sumatra | Wai Negri | D orchymont | paratype | 2 |
| Hydraena insolita d'Orchymont [- ] | Asiatic | Sumatra | Moesi | D orchymont | type | 1 |
| Hydraena inusta d'Orchymont [- ] | Asiatic | Java | Tjibodas | D orchymont | paratype | 5 |
| Hydraena inusta d'Orchymont [- ] | Asiatic | Java | Tjibodas | D orchymont | paratype | 2 |
| Hydraena inusta d'Orchymont [- ] | Asiatic | Sumatra | Moesi | D orchymont | paratype | 6 |
| Hydraena inusta d'Orchymont [- ] | Asiatic | Sumatra | Moesi | D orchymont | paratype | 4 |
| Hydraena inusta d'Orchymont [- ] | Asiatic | Sumatra | Moesi | D orchymont | type | 1 |
| Hydraena isolinea [- ] | Asiatic | Taiwan | Chiayi County | Jach et diaz | paratype | 2 |
| Hydraena iterata d'Orchymont [- ] | Afrotropical | Kenya | D orchymont | paratype | 1 | |
| Hydraena jacobsoni d'Orchymont [- ] | Asiatic | D orchymont | paratype | 5 | ||
| Hydraena jacobsoni d'Orchymont [- ] | Asiatic | D orchymont | paratype | 2 | ||
| Hydraena jacobsoni d'Orchymont [- ] | Asiatic | Java | Ranoe Klakah | D orchymont | paratype | 2 |
| Hydraena jacobsoni d'Orchymont [- ] | Asiatic | Sumatra | D orchymont | paratype | 3 | |
| Hydraena jacobsoni d'Orchymont [- ] | Asiatic | Sumatra | D orchymont | type | 1 | |
| Hydraena jacobsoni d'Orchymont [- ] | Asiatic | Sumatra | Da Ramaoe | D orchymont | paratype | 2 |
| Hydraena jacobsoni d'Orchymont [- ] | Asiatic | Sumatra | Palembang | D orchymont | paratype | 1 |
| Hydraena jacobsoni d'Orchymont [- ] | Asiatic | Sumatra | Singkarak | D orchymont | paratype | 1 |
| Hydraena jailensis Breit [- ] | ? | Isila-Gebirge | Janssens | paratype | 2 | |
| Hydraena jailensis Breit [- ] | ? | Isila-Gebirge | Kniz | paratype | 1 | |
| Hydraena knischi d'Orchymont [- ] | Asiatic | D orchymont | paratype | 3 | ||
| Hydraena knischi d'Orchymont [- ] | Asiatic | D orchymont | paratype | 1 | ||
| Hydraena knischi d'Orchymont [- ] | Asiatic | D orchymont | type | 1 | ||
| Hydraena kocheri Berthèlemy [- ] | ? | Algaric | D orchymont | paratype | 1 | |
| Hydraena liriope d'Orchymont [- ] | ? | Baschkos | D orchymont | paratype | 2 | |
| Hydraena liriope d'Orchymont [- ] | ? | Baschkos | Janssens | type | 1 | |
| Hydraena liriope d'Orchymont [- ] | ? | Tschavdir | D orchymont | paratype | 4 | |
| Hydraena liriope d'Orchymont [- ] | ? | Tschurudschin | D orchymont | paratype | 2 | |
| Hydraena longicolis Sharp [- ] | Neotropical | Guatemala | Duenos | Dorchymont | paratype | 1 |
| Hydraena longior Rey [- ] | Palearctic | France | Hyères | type | 1 | |
| Hydraena ludovicae d'Orchymont [- ] | ? | Athanasios | Dorchymont | paratype | 7 | |
| Hydraena ludovicae d'Orchymont [- ] | ? | Athanasios | Janssens | type | 1 | |
| Hydraena ludovicae d'Orchymont [- ] | ? | Gides | Dorchymont | paratype | 45 | |
| Hydraena ludovicae d'Orchymont [- ] | ? | Gides | Dorchymont | paratype | 28 | |
| Hydraena ludovicae d'Orchymont [- ] | ? | Lutsa | Dorchymont | paratype | 3 | |
| Hydraena ludovicae d'Orchymont [- ] | ? | Lutsa | Dorchymont | paratype | 13 | |
| Hydraena ludovicae d'Orchymont [- ] | ? | Psachna | Dorchymont | paratype | 1 | |
| Hydraena macedonica d'orchymont [- ] | ? | Devdelija | Dorchymont | paratype | 1 | |
| Hydraena macedonica d'orchymont [- ] | ? | Negorci | Dorchymont | paratype | 1 | |
| Hydraena macedonica d'orchymont [- ] | ? | Negorci | Dorchymont | type | 1 | |
| Hydraena maculicollis Champion [- ] | Asiatic | India | W. Almora | Dorchymont | paratype | 4 |
| Hydraena marginicollis Kiesenwetter [- ] | Nearctique | United States of America | Perkins | paratype | 1 | |
| Hydraena mouzaiensis Deville [- ] | ? | Mouzaïa | Janssens | paratype | 1 | |
| Hydraena needhami d'Orchymont [- ] | Nearctique | United States of America | Ithaca | D orchymont | type | 1 |
| Hydraena orientalis Breit [- ] | ? | Oschebell | Kniz | paratype | 1 | |
| Hydraena orientalis Breit [- ] | ? | Oschebell | Kniz | type | 1 | |
| Hydraena ortali Jach [- ] | ? | M. Dalliyya | Jach | paratype | 1 | |
| Hydraena paraguanensis [- ] | Neotropical | Paraguay | Puerto P. | paratype | 1 | |
| Hydraena paraguanensis [- ] | Neotropical | Paraguay | Puerto P. | paratype | 1 | |
| Hydraena pennsylvatica [- ] | Nearctique | Woodstock | D orchymont | paratype | 1 | |
| Hydraena pennsylvatica [- ] | Nearctique | Canada | Edmonton | D orchymont | paratype | 3 |
| Hydraena pennsylvatica [- ] | Nearctique | Canada | Edmonton | D orchymont | paratype | 1 |
| Hydraena pero Balfour Browne [- ] | Afrotropical | Zaire | Katongo | Balfour browne | paratype | 1 |
| Hydraena pero Balfour Browne [- ] | Afrotropical | Zaire | Muye | Balfour browne | paratype | 1 |
| Hydraena phallerata d'Orchymont [- ] | Asiatic | Asie mineure occid. | D orchymont | paratype | 6 | |
| Hydraena phallerata d'Orchymont [- ] | Asiatic | Asie mineure occid. | D orchymont | paratype | 3 | |
| Hydraena phallerata d'Orchymont [- ] | Palearctic | Europe occid. | Janssens | type | 1 | |
| Hydraena phallerata d'Orchymont [- ] | Palearctic | Europe occid. | D orchymont | paratype | 1 | |
| Hydraena phallerata d'Orchymont [- ] | Palearctic | Europe occid. | D orchymont | paratype | 5 | |
| Hydraena phallerata d'Orchymont [- ] | Palearctic | Europe occid. | D orchymont | paratype | 2 | |
| Hydraena phallerata d'Orchymont [- ] | Palearctic | Europe occid. | D orchymont | paratype | 2 | |
| Hydraena phallerata d'Orchymont [- ] | Palearctic | Europe occid. | D orchymont | paratype | 2 | |
| Hydraena phassilyi d'Orchymont [- ] | Palearctic | Greece | Vlasios | Dorchymont | paratype | 1 |
| Hydraena phassilyi d'Orchymont [- ] | Palearctic | Greece | Vlasios | Dorchymont | paratype | 18 |
| Hydraena phassilyi d'Orchymont [- ] | Palearctic | Greece | Vlasios | Dorchymont | paratype | 7 |
| Hydraena phassilyi d'Orchymont [- ] | Palearctic | Greece | Vlasios | Janssens | type | 1 |
| Hydraena philyra d'Orchymont [- ] | Asiatic | Asie mineure occid. | Kyzikos | Dorchymont | paratype | 2 |
| Hydraena philyra d'Orchymont [- ] | Asiatic | Asie mineure occid. | Kyzikos | Dorchymont | paratype | 1 |
| Hydraena philyra d'Orchymont [- ] | Asiatic | Asie mineure occid. | Kyzikos | Janssens | type | 1 |
| Hydraena plaumanni d'Orchymont [- ] | Neotropical | Brazil | Nova Teutonia | D orchymont | paratype | 11 |
| Hydraena plaumanni d'Orchymont [- ] | Neotropical | Brazil | Nova Teutonia | D orchymont | type | 1 |
| Hydraena plennipennis Deane [- ] | ? | Healesville | Dorchymont | paratype | 1 | |
| Hydraena plumipes Baudi [- ] | Palearctic | Italy | type | 1 | ||
| Hydraena porcula [- ] | Asiatic | Taiwan | Chiayi County | Jach et diaz | paratype | 2 |
| Hydraena pretneri Chiesa [- ] | Chiesa | paratype | 2 | |||
| Hydraena pretneri Chiesa [- ] | Chiesa | paratype | 1 | |||
| Hydraena pretneri Chiesa [- ] | Palearctic | Italy | Bologna | Chiesa | paratype | 2 |
| Hydraena pretneri Chiesa [- ] | Palearctic | Italy | Bologna | Chiesa | paratype | 1 |
| Hydraena princeps Fauvel [- ] | Australian | New Caledonia | anse Vata?? | holotype | 1 | |
| Hydraena producta Rey [- ] | Palearctic | France | Avenas | Rey | paratype | 1 |
| Hydraena producta Rey [- ] | Palearctic | France | Avenas | Rey | type | 1 |
| Hydraena pseudoriparia d' Orchymont [- ] | Asiatic | D orchymont | paratype | 2 | ||
| Hydraena pseudoriparia d' Orchymont [- ] | Asiatic | Janssens | type | 1 | ||
| Hydraena rhea Balfour, Browne [- ] | ? | Singa Komo?? | Balfour et browne | type | 1 | |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Apollona | Jach | paratype | 3 |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Apollona | Jach | paratype | 4 |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Apollona | Jach | paratype | 18 |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Apollona | Jach | paratype | 55 |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Mte Profeta | Jach | paratype | 48 |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Mte Profeta | Jach | paratype | 44 |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Mte Profeta | Jach | paratype | 2 |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Mte Profeta | Jach | paratype | 4 |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Mte Profeta | Jach | paratype | 3 |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Mte Profeta | Jach | paratype | 3 |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Nano | Jach | paratype | 94 |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Nano | Jach | paratype | 124 |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Platanos | Jach | paratype | 56 |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Platanos | Jach | paratype | 184 |
| Hydraena rhodia Jach [- ] | Neotropical | Greece | Rodini | Jach | paratype | 2 |
| Hydraena rhodia Jach [- ] | Palearctic | Greece | Mo. Apollona | Jach | paratype | 18 |
| Hydraena rhodia Jach [- ] | Palearctic | Greece | Mo. Apollona | Jach | paratype | 52 |
| Hydraena rhodia Jach [- ] | Palearctic | Greece | Platanos | Jach | paratype | 2 |
| Hydraena rhodia Jach [- ] | Palearctic | Greece | Platanos | Jach | paratype | 100 |
| Hydraena rhodia Jach [- ] | Palearctic | Greece | Proleta | Jach | paratype | 1 |
| Hydraena rigens Balfour & Browne [- ] | ? | Singa - Kondo | Balfour et browne | type | 1 | |
| Hydraena rigua d' Orchymont [- ] | Cherrat | D orchymont | paratype | 1 | ||
| Hydraena rigua d' Orchymont [- ] | Mellah | D orchymont | paratype | 1 | ||
| Hydraena rigua d' Orchymont [- ] | Mellah | D orchymont | paratype | 1 | ||
| Hydraena rigua d' Orchymont [- ] | Yquem | D orchymont | paratype | 2 | ||
| Hydraena rigua d' Orchymont [- ] | Yquem | D orchymont | paratype | 1 | ||
| Hydraena rigua d' Orchymont [- ] | ? | Aïn Lent | D orchymont | paratype | 1 | |
| Hydraena rigua d' Orchymont [- ] | ? | Aïn Lent | D orchymont | paratype | 1 | |
| Hydraena rigua d' Orchymont [- ] | ? | El Hadjeb | D orchymont | paratype | 1 | |
| Hydraena rigua d' Orchymont [- ] | ? | entre Fes et Meknès | D orchymont | paratype | 1 | |
| Hydraena rigua d' Orchymont [- ] | ? | entre Fes et Meknès | D orchymont | paratype | 3 | |
| Hydraena rigua d' Orchymont [- ] | ? | Meknés | D orchymont | paratype | 1 | |
| Hydraena rigua d' Orchymont [- ] | ? | Volubilis | D orchymont | paratype | 1 | |
| Hydraena rigua d' Orchymont [- ] | ? | Yquem | D orchymont | paratype | 8 | |
| Hydraena rigua d' Orchymont [- ] | Palearctic | Morocco | Azrou | D orchymont | paratype | 1 |
| Hydraena rigua d' Orchymont [- ] | Palearctic | Morocco | Azrou | D orchymont | paratype | 6 |
| Hydraena rigua d' Orchymont [- ] | Palearctic | Morocco | M. Atl | D orchymont | paratype | 1 |
| Hydraena rigua d' Orchymont [- ] | Palearctic | Morocco | Tigrigra | D orchymont | paratype | 1 |
| Hydraena rigua d' Orchymont [- ] | Palearctic | Morocco | Tigrigra | D orchymont | paratype | 3 |
| Hydraena rigua d' Orchymont [- ] | Palearctic | Morocco | Tigrigra | D orchymont | paratype | 1 |
| Hydraena rigua d' Orchymont [- ] | Palearctic | Morocco | Tigrigra | Janssens | type | 1 |
| Hydraena rigua d'Orchymont [- ] | Oued Massa | D orchymont | paratype | 1 | ||
| Hydraena rigua d'Orchymont [- ] | ? | Aît el Kadj | D orchymont | paratype | 2 | |
| Hydraena rigua d'Orchymont [- ] | ? | Aît el Kadj | D orchymont | paratype | 2 | |
| Hydraena rigua d'Orchymont [- ] | ? | Aît el Kadj | D orchymont | paratype | 2 | |
| Hydraena rigua d'Orchymont [- ] | ? | Oued Massa | D orchymont | paratype | 1 | |
| Hydraena rigua d'Orchymont [- ] | ? | Tagdempt | D orchymont | paratype | 4 | |
| Hydraena rigua d'Orchymont [- ] | ? | Tagdempt | D orchymont | paratype | 3 | |
| Hydraena rigua d'Orchymont [- ] | ? | The. Réraya | D orchymont | paratype | 1 | |
| Hydraena rigua d'Orchymont [- ] | ? | Tiaret | D orchymont | paratype | 3 | |
| Hydraena rigua d'Orchymont [- ] | ? | Tiaret | D orchymont | paratype | 1 | |
| Hydraena rigua d'Orchymont [- ] | ? | Tiaret | D orchymont | paratype | 4 | |
| Hydraena rigua d'Orchymont [- ] | ? | Tlemcen | D orchymont | paratype | 1 | |
| Hydraena rigua d'Orchymont [- ] | Palearctic | Morocco | Imminon?? | D orchymont | paratype | 1 |
| Hydraena rigua d'Orchymont [- ] | Palearctic | Morocco | Imminon?? | D orchymont | paratype | 1 |
| Hydraena roba Balfour, Browne [- ] | Afrotropical | Zaire | Rubutu | Balfour et browne | type | 1 |
| Hydraena russa Balfour, Browne [- ] | ? | Kai Baku | Balfour et browne | type | 1 | |
| Hydraena scabrosa d'Orchymont [- ] | ? | Azrou | D orchymont | paratype | 2 | |
| Hydraena scabrosa d'Orchymont [- ] | ? | Azrou | D orchymont | type | 1 | |
| Hydraena scobra d'Orchymont [- ] | Asiatic | Philippines | Montalba | D orchymont | type | 1 |
| Hydraena scythica Janssens [- ] | Tadzhiskistan | Komsomolabad | Janssens | paratype | 1 | |
| Hydraena sensa Fauvel [- ] | Australian | New Caledonia | Kanala | holotype | 1 | |
| Hydraena servilia d'Orchymont [- ] | Palearctic | Spain | Arboles | Janssens | type | 1 |
| Hydraena similis d'Orchymont [- ] | Palearctic | Italy | Monte Caprara | D orchymont | paratype | 1 |
| Hydraena similis d'Orchymont [- ] | Palearctic | Italy | Porrettano | D orchymont | paratype | 1 |
| Hydraena similis d'Orchymont [- ] | Palearctic | Italy | Porrettano | D orchymont | paratype | 3 |
| Hydraena similis d'Orchymont [- ] | Palearctic | Italy | Porrettano | D orchymont | paratype | 1 |
| Hydraena similis d'Orchymont [- ] | Palearctic | Italy | Sta. Eufemia | D orchymont | paratype | 1 |
| Hydraena similis d'Orchymont [- ] | Palearctic | Italy | Sta. Eufemia | Janssens | type | 1 |
| Hydraena simonidea d'Orchymont [- ] | Lutsa | D orchymont | paratype | 1 | ||
| Hydraena simonidea d'Orchymont [- ] | ? | Gides | D orchymont | paratype | 6 | |
| Hydraena simonidea d'Orchymont [- ] | ? | Gides | D orchymont | paratype | 3 | |
| Hydraena simonidea d'Orchymont [- ] | ? | Gides | D orchymont | paratype | 1 | |
| Hydraena simonidea d'Orchymont [- ] | ? | Greka Zaçha | D orchymont | paratype | 2 | |
| Hydraena simonidea d'Orchymont [- ] | ? | Greka Zapha | D orchymont | paratype | 3 | |
| Hydraena simonidea d'Orchymont [- ] | ? | Krestena Greka | D orchymont | paratype | 1 | |
| Hydraena simonidea d'Orchymont [- ] | ? | Lutsa | D orchymont | paratype | 2 | |
| Hydraena simonidea d'Orchymont [- ] | ? | Olympia | Janssens | type | 1 | |
| Hydraena simonidea d'Orchymont [- ] | ? | Olympia | D orchymont | paratype | 1 | |
| Hydraena simonidea d'Orchymont [- ] | Albania | Gides | D orchymont | paratype | 1 | |
| Hydraena simonidea d'Orchymont [- ] | Palearctic | Albania | Skumbi | D orchymont | paratype | 1 |
| Hydraena smyrnensis Sahlberg [- ] | Negorci | Jach | paratype | 2 | ||
| Hydraena squalida d'Orchymont [- ] | Asiatic | Java | Sarangan | D orchymont | type | 1 |
| Hydraena sternalis Rey [- ] | Palearctic | France | Jach | lectotype | 1 | |
| Hydraena sternalis Rey [- ] | Palearctic | France | Jach | paralectotype | 2 | |
| Hydraena sternalis Rey [- ] | Palearctic | France | Jach | paralectotype | 2 | |
| Hydraena subacuminata Rey [- ] | Palearctic | Corsica | Kniz | paratype | 1 | |
| Hydraena subacuminata Rey [- ] | Palearctic | Corsica | Bocognano | Janssens | paratype | 1 |
| Hydraena subacuminata Rey [- ] | Palearctic | Corsica | Bocognano | Kniz | paratype | 5 |
| Hydraena subacuminata Rey [- ] | Palearctic | Corsica | Noute d'Oro | Kniz | paratype | 1 |
| Hydraena subina d'Orchymont [- ] | ? | Egkares | Janssens | type | 1 | |
| Hydraena subinflata d'Orchymont [- ] | ? | Parikia | Janssens | type | 1 | |
| Hydraena subinoides d'Orchymont [- ] | ? | Grigorias | D orchymont | paratype | 14 | |
| Hydraena subinoides d'Orchymont [- ] | ? | Kyrikos | D orchymont | paratype | 6 | |
| Hydraena subinoides d'Orchymont [- ] | ? | Therma | D orchymont | paratype | 28 | |
| Hydraena subinoides d'Orchymont [- ] | ? | Therma | D orchymont | paratype | 10 | |
| Hydraena subinoides d'Orchymont [- ] | ? | Therma | D orchymont | paratype | 9 | |
| Hydraena subinoides d'Orchymont [- ] | ? | Xylocirti | D orchymont | paratype | 7 | |
| Hydraena subinoides d'Orchymont [- ] | ? | Xylocirti | Janssens | type | 1 | |
| Hydraena subinura d'Orchymont [- ] | Palearctic | Crete | Murnies | Janssens | type | 1 |
| Hydraena subirregularis Pic. [- ] | Palearctic | Italy | Sta. Eufemia | D orchymont | type | 1 |
| Hydraena subjuncta d'Orchymont [- ] | ? | Canalethal | D orchymont | paratype | 1 | |
| Hydraena subjuncta d'Orchymont [- ] | ? | Canalethal | D orchymont | type | 1 | |
| Hydraena subjuncta d'Orchymont [- ] | ? | Castelnuovo | D orchymont | paratype | 3 | |
| Hydraena subjuncta d'Orchymont [- ] | Palearctic | Greece | Corfu | D orchymont | paratype | 1 |
| Hydraena sublamina d'Orchymont [- ] | ? | Aruf | D orchymont | paratype | 1 | |
| Hydraena sublamina d'Orchymont [- ] | ? | Tschavdir | D orchymont | paratype | 19 | |
| Hydraena sublamina d'Orchymont [- ] | ? | Tschavdir | D orchymont | paratype | 11 | |
| Hydraena sublamina d'Orchymont [- ] | ? | Tschavdir | Janssens | type | 1 | |
| Hydraena sublamina d'Orchymont [- ] | ? | Tschurudschin | D orchymont | paratype | 3 | |
| Hydraena sublapsa d'Orchymont [- ] | ? | Arut | D orchymont | paratype | 11 | |
| Hydraena sublapsa d'Orchymont [- ] | ? | Arut | D orchymont | paratype | 13 | |
| Hydraena sublapsa d'Orchymont [- ] | ? | Arut | Janssens | type | 1 | |
| Hydraena sublapsa d'Orchymont [- ] | ? | Tschurudschin | D orchymont | paratype | 2 | |
| Hydraena sublapsa d'Orchymont [- ] | ? | Tschurudschin | D orchymont | paratype | 5 | |
| Hydraena thienemanni d'Orchymont [- ] | Asiatic | Java | Tjihodas | D orchymont | type | 1 |
| Hydraena truncata Rey [- ] | Palearctic | France | paratype | 3 | ||
| Hydraena truncata Rey [- ] | Palearctic | France | type | 1 | ||
| Hydraena unca Valladares [- ] | Palearctic | Spain | Arboles | Orchymont | paratype | 2 |
| Hydraena unca Valladares [- ] | Palearctic | Spain | Arboles | Orchymont | paratype | 4 |
| Hydraena unca Valladares [- ] | Palearctic | Spain | Arboles | Orchymont | paratype | 14 |
| Hydraena unca Valladares [- ] | Palearctic | Spain | Arboles | Orchymont | paratype | 5 |
| Hydraena unca Valladares [- ] | Palearctic | Spain | Arboles | Orchymont | paratype | 6 |
| Hydraena unca Valladares [- ] | Palearctic | Spain | Arboles | Orchymont | paratype | 8 |
| Hydraena unca Valladares [- ] | Palearctic | Spain | El Escorial, Fuente El Batan | Orchymont | paratype | 10 |
| Hydraena unca Valladares [- ] | Palearctic | Spain | Escorial | Orchymont | paratype | 2 |
| Hydraena unca Valladares [- ] | Palearctic | Spain | Escorial-Guadara | Orchymont | paratype | 37 |
| Hydraena unca Valladares [- ] | Palearctic | Spain | Escorial-Guadara | Orchymont | paratype | 49 |
| Hydraena unca Valladares [- ] | Palearctic | Spain | Fuente El Batan | Orchymont | paratype | 2 |
| Hydraena van dykei d'Orchymont [- ] | ? | Marin? | D orchymont | paratype | 3 | |
| Hydraena van dykei d'Orchymont [- ] | ? | Marin? | D orchymont | type | 1 | |
| Hydraena van dykei d'Orchymont [- ] | ? | Santa Clara | D orchymont | paratype | 1 | |
| Hydraena wintersi d'Orchymont [- ] | ? | Camp Meeker?? | D orchymont | type | 1 | |
| Hydraena wui d'Orchymont [- ] | ? | Nanking?? | D orchymont | paratype | 1 | |
| Hydraena wui d'Orchymont [- ] | ? | Nanking?? | D orchymont | type | 1 | |
| Hydraena (Haenydra) amarantina Janssens [ ] | Palearctic | Turkey | Kara Hava | Janssens | paratype | 7 |
| Hydraena (Haenydra) amarantina Janssens [ ] | Palearctic | Turkey | Zigana | Janssens | paratype | 6 |
| Hydraena (Haenydra) amarantina Janssens [ ] | Palearctic | Turkey | Zigana | Janssens | type | 1 |
| Hydraena (Haenydra) anatolica Janssens [ ] | Palearctic | Turkey | Bolu | Jach | type | 1 |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | Pry | D orchymont | paratype | 5 | ||
| Hydraena (Haenydra) belgica d'Orchymont [ ] | ? | Pry | D orchymont | paratype | 1 | |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | ? | Wienerwald | D orchymont | paratype | 1 | |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | Silesia | Teschen | D orchymont | paratype | 2 | |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | Silesia | Teschen | D orchymont | paratype | 5 | |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | Palearctic | Belgium | Pondrôme | D orchymont | paratype | 2 |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | Palearctic | Belgium | Pondrôme | D orchymont | paratype | 1 |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | Palearctic | Belgium | Pondrôme | D orchymont | paratype | 1 |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | Palearctic | Belgium | Pondrôme | D orchymont | paratype | 1 |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | Palearctic | Belgium | Pondrôme | D orchymont | paratype | 2 |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | Palearctic | Belgium | Pondrômes | D orchymont | paratype | 2 |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | Palearctic | Belgium | Pondrômes | Janssens | type | 1 |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | Palearctic | Belgium | Pondrômes | D orchymont | paratype | 2 |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | Palearctic | Belgium | Pondrômes | D orchymont | paratype | 2 |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | Palearctic | Belgium | Pondrômes | D orchymont | paratype | 1 |
| Hydraena (Haenydra) belgica d'Orchymont [ ] | Palearctic | Belgium | Pondrômes | D orchymont | paratype | 1 |
| Hydraena (Haenydra) bitruncata d'Orchymont [ ] | type | 1 | ||||
| Hydraena (Haenydra) bitruncata d'Orchymont [ ] | Palearctic | Preste Liendrich | D orchymont | paratype | 2 | |
| Hydraena (Haenydra) bitruncata d'Orchymont [ ] | Palearctic | Preste Soulanette | D orchymont | paratype | 2 | |
| Hydraena (Haenydra) bitruncata d'Orchymont [ ] | Palearctic | Ribas | D orchymont | paratype | 1 | |
| Hydraena (Haenydra) bitruncata d'Orchymont [ ] | Palearctic | France | Corsavy | D orchymont | paratype | 3 |
| Hydraena (Haenydra) bitruncata d'Orchymont [ ] | Palearctic | France | Corsavy | D orchymont | paratype | 3 |
| Hydraena (Haenydra) bitruncata d'Orchymont [ ] | Palearctic | France | Corsavy | D orchymont | paratype | 1 |
| Hydraena (Haenydra) cata d'Orchymont [ ] | paratype | 9 | ||||
| Hydraena (Haenydra) cata d'Orchymont [ ] | paratype | 4 | ||||
| Hydraena (Haenydra) cata d'Orchymont [ ] | type | 1 | ||||
| Hydraena (Haenydra) caucasica Kuwert [ ] | Palearctic | Janssens | paratype | 1 | ||
| Hydraena (Haenydra) czernohorskyi Müller [ ] | ? | Klaue?? | D orchymont | type | 1 | |
| Hydraena (Haenydra) czernohorskyi Müller [ ] | ? | Tniest?? | D orchymont | syntype | 1 | |
| Hydraena (Haenydra) czernohorskyi Müller [ ] | ? | Tniest?? | D orchymont | syntype | 1 | |
| Hydraena (Haenydra) dalmatina Ganglbauer [ ] | ? | Savina | D orchymont | syntype | 2 | |
| Hydraena (Haenydra) devincta d'orchymont [ ] | ? | Stroici | D orchymont | paratype | 4 | |
| Hydraena (Haenydra) devincta d'orchymont [ ] | ? | Stroici | D orchymont | paratype | 5 | |
| Hydraena (Haenydra) devincta d'Orchymont [ ] | Palearctic | Istria | Stroilci | D orchymont | paratype | 29 |
| Hydraena (Haenydra) devincta d'Orchymont [ ] | Palearctic | Istria | Stroilci | D orchymont | paratype | 21 |
| Hydraena (Haenydra) devincta d'Orchymont [ ] | Palearctic | Istria | Stroilci | Janssens | type | 1 |
| Hydraena (Haenydra) devincta d'Orchymont [ ] | Palearctic | Siovenia | Javornia | D orchymont | paratype | 2 |
| Hydraena (Haenydra) devincta d'Orchymont [ ] | Palearctic | Siovenia | Javornia | D orchymont | paratype | 6 |
| Hydraena (Haenydra) devincta d'Orchymont [ ] | Palearctic | Siovenia | Plava | D orchymont | paratype | 2 |
| Hydraena (Haenydra) devincta d'Orchymont [ ] | Palearctic | Siovenia | Plava | D orchymont | paratype | 2 |
| Hydraena (Haenydra) devincta d'Orchymont [ ] | Palearctic | Siovenia | Podbrdo | D orchymont | paratype | 3 |
| Hydraena (Haenydra) devincta d'Orchymont [ ] | Palearctic | Siovenia | Podbrdo | D orchymont | paratype | 8 |
| Hydraena (Haenydra) emarginata Rey [saga D orchymont] | ? | Eifel : Ahrgeb, Tombach | D orchymont | type | 1 | |
| Hydraena (Haenydra) emarginata Rey [saga D orchymont] | ? | Reskida | D orchymont | paratype | 2 | |
| Hydraena (Haenydra) emarginata Rey [saga D orchymont] | ? | Tator, Roubné?? | D orchymont | paratype | 1 | |
| Hydraena (Haenydra) exasperata d'orchymont [ ] | paratype | 1 | ||||
| Hydraena (Haenydra) exasperata d'Orchymont [ ] | ? | Monenique | Jach | paratype | 1 | |
| Hydraena (Haenydra) exasperata d'Orchymont [ ] | Palearctic | Portugal | Monchique | Jach | holotype | 1 |
| Hydraena (Haenydra) excisa Ganglbauer [exclusa D orchymont] | paratype | 7 | ||||
| Hydraena (Haenydra) excisa Ganglbauer [exclusa D orchymont] | type | 1 | ||||
| Hydraena (Haenydra) gracilis Germar [ ] | Palearctic | Slovenia | Javornia | D orchymont | paralectotype | 19 |
| Hydraena (Haenydra) gracilis Germar [balcanica D orchymont] | Palearctic | Slovenia | Javornia | D orchymont | lectotype | 1 |
| Hydraena (Haenydra) heterogyna Bedel [ ] | ? | St. Martin Visubée | Kniz | paratype | 1 | |
| Hydraena (Haenydra) iberica d'Orchymont [ ] | Palearctic | Portugal | S. Martinho | D orchymont | paratype | 2 |
| Hydraena (Haenydra) iberica d'Orchymont [ ] | Palearctic | Portugal | S. Martinho | D orchymont | paratype | 1 |
| Hydraena (Haenydra) iberica d'Orchymont [ ] | Palearctic | Spain | Escorial-Guadara | D orchymont | type | 1 |
| Hydraena (Haenydra) italica Ganglbauer [doderoi Ganglbauer] | ? | Torriglia | Kniz | syntype | 1 | |
| Hydraena (Haenydra) italica Ganglbauer [doderoi Ganglbauer] | ? | Torriglia | Kniz | syntype | 1 | |
| Hydraena (Haenydra) phallica d' Orchymont [ ] | Palearctic | Bulgaria | Kragec | D orchymont | paratype | 1 |
| Hydraena (Haenydra) phallica d' Orchymont [ ] | Palearctic | Bulgaria | Kragec | D orchymont | paratype | 3 |
| Hydraena (Haenydra) phallica d' Orchymont [ ] | Palearctic | Bulgaria | Kragek | Janssens | type | 1 |
| Hydraena (Haenydra) phallica d' Orchymont [ ] | Palearctic | Bulgaria | Rilska | D orchymont | paratype | 1 |
| Hydraena (Haenydra) plastica d' Orchymont [ ] | Asiatic | ? | Kesis | D orchymont | paratype | 2 |
| Hydraena (Haenydra) plastica d' Orchymont [ ] | Asiatic | ? | Kesis | Janssens | paratype | 1 |
| Hydraena (Haenydra) plastica d' Orchymont [ ] | Asiatic | ? | Kesis | Janssens | type | 1 |
| Hydraena (Haenydra) scitula d' Orchymont [ ] | Asiatic | ? | ? | D orchymont | paratype | 5 |
| Hydraena (Haenydra) scitula d' Orchymont [ ] | Asiatic | ? | Bosphorus?? | D orchymont | paratype | 5 |
| Hydraena (Haenydra) scitula d' Orchymont [ ] | Palearctic | Dujukulimand??? | D orchymont | paratype | 2 | |
| Hydraena (Haenydra) scitula d' Orchymont [ ] | Palearctic | ? | ? | D orchymont | paratype | 1 |
| Hydraena (Haenydra) scitula d' Orchymont [ ] | Palearctic | ? | ? | D orchymont | type | 1 |
| Hydraena (Haenydra) solarii Pretner [ ] | Palearctic | Italy | Arcidosso | D orchymont | paratype | 1 |
| Hydraena (Haenydra) truncata Rey [falzonii Pretner] | Palearctic | Italy | Ceraso | paratype | 2 | |
| Hydraena (Haenydra) truncata Rey [falzonii Pretner] | Palearctic | Italy | Ceraso | Janssens | paratype | 4 |
| Hydraena (Haenydra) vedrasi d'Orchymont [ ] | ? | Gides | D orchymont | type | 1 | |
| Hydraena (Heanydra) lazica Janssens [ ] | Palearctic | Turkey | Zigana | Janssens | paratype | 1 |
| Hydraena (Heanydra) lazica Janssens [ ] | Palearctic | Turkey | Zigana | Janssens | type | 1 |
| Hydraena (Heanydra) ponticola Janssens [ ] | Palearctic | Turkey | Arivin | Janssens | holotype | 1 |
| Hydraena (Holcohydraena) miyatakei Sato [ ] | ? | Matsuyama | Sato | paratype | 2 | |
| Hydraena (Hudraena) virginalis Janssens [ ] | Palearctic | Turkey | Meryemana (Sumela) | Janssens | type | 1 |
| Hydraena (Hydraena) abdita [ ] | ? | ? | D orchymont | paratype | 1 | |
| Hydraena (Hydraena) abdita [ ] | Afrotropical | Uganda | env, de Fort Portal | D orchymont | paratype | 1 |
| Hydraena (Hydraena) abdita [ ] | Afrotropical | Uganda | env, de Fort Portal | D orchymont | paratype | 1 |
| Hydraena (Hydraena) adrastea [ ] | Afrotropical | Kenya | D orchymont | paratype | 1 | |
| Hydraena (Hydraena) adrastea [ ] | Afrotropical | Kenya | D orchymont | paratype | 2 | |
| Hydraena (Hydraena) adrastea [ ] | Afrotropical | Kenya | Kisouwou | D orchymont | paratype | 2 |
| Hydraena (Hydraena) adrastea [ ] | Afrotropical | Uganda | Ounyoro | D orchymont | paratype | 1 |
| Hydraena (Hydraena) allomorpha Lagar & Fresneda [ ] | Palearctic | Spain | Los Barrios | Lagar et fresneda | paratype | 1 |
| Hydraena (Hydraena) amidensis Jach [ ] | ? | Karaçada bei Diyarbakir | Jach | paratype | 3 | |
| Hydraena (Hydraena) andreinii [ ] | ? | ? | Lagar et fresneda | paratype | 1 | |
| Hydraena (Hydraena) andreinii d'Orchymont [ ] | ? | ? | Lagar et fresneda | paratype | 1 | |
| Hydraena (Hydraena) anisonycha Perkins [ ] | Neotropical | Colombia | Bogota | Perkins | paratype | 2 |
| Hydraena (Hydraena) anisonycha Perkins [ ] | Neotropical | Colombia | Bogota | Perkins | paratype | 1 |
| Hydraena (Hydraena) antiochena Jach [ ] | ? | Amanos Geb. | Jach | paratype | 4 | |
| Hydraena (Hydraena) ariana Janssens [ ] | Palearctic | Afghanistan | Bashgulta, Nuristan | Janssens | paratype | 1 |
| Hydraena (Hydraena) ariana Janssens [ ] | Palearctic | Afghanistan | Bashgulta, Nuristan | Janssens | paratype | 8 |
| Hydraena (Hydraena) ariana Janssens [ ] | Palearctic | Afghanistan | Nuristan | Janssens | paratype | 1 |
| Hydraena (Hydraena) aydini Janssens [ ] | Palearctic | Turkey | Artvin | Janssens | type | 1 |
| Hydraena (Hydraena) bactriana Janssens [ ] | Palearctic | Afghanistan | Bashgultal; Nuristan | Janssens | paratype | 1 |
| Hydraena (Hydraena) bactriana Janssens [ ] | Palearctic | Afghanistan | Bashgultal; Nuristan | Janssens | paratype | 1 |
| Hydraena (Hydraena) balli d' Orchymont [ ] | Palearctic | Cyprus | Ayia | D orchymont | paratype | 1 |
| Hydraena (Hydraena) balli d' Orchymont [ ] | Palearctic | Cyprus | Evrykhou | D orchymont | paratype | 1 |
| Hydraena (Hydraena) balli d' Orchymont [ ] | Palearctic | Cyprus | Evrykhou | D orchymont | paratype | 1 |
| Hydraena (Hydraena) balli d' Orchymont [ ] | Palearctic | Cyprus | Kalohanayiotis | D orchymont | paratype | 11 |
| Hydraena (Hydraena) balli d' Orchymont [ ] | Palearctic | Cyprus | Kalohanayiotis | D orchymont | paratype | 8 |
| Hydraena (Hydraena) balli d' Orchymont [ ] | Palearctic | Cyprus | Kalohanayiotis | D orchymont | type | 1 |
| Hydraena (Hydraena) balli d' Orchymont [ ] | Palearctic | Cyprus | Palaeomylos | D orchymont | paratype | 8 |
| Hydraena (Hydraena) balli d' Orchymont [ ] | Palearctic | Cyprus | Palaeomylos | D orchymont | paratype | 3 |
| Hydraena (Hydraena) balli d' Orchymont [ ] | Palearctic | Cyprus | Podoulas | D orchymont | paratype | 1 |
| Hydraena (Hydraena) balli d' Orchymont [ ] | Palearctic | Cyprus | Podoulas | D orchymont | paratype | 2 |
| Hydraena (Hydraena) balli d' Orchymont [ ] | Palearctic | Cyprus | Prodromos | D orchymont | paratype | 1 |
| Hydraena (Hydraena) balli d' Orchymont [ ] | Palearctic | Cyprus | Trikoutsa? | D orchymont | paratype | 1 |
| Hydraena (Hydraena) berthelemyi Lagar & Fresneda [ ] | Palearctic | Spain | Los Barrios | Lagar et fresneda | paratype | 1 |
| Hydraena (Hydraena) beyarslani jach [ ] | ? | Bingol | Jach | paratype | 2 | |
| Hydraena (Hydraena) bicolorata Jach [ ] | ? | Ayvecik? | Jach | paratype | 4 | |
| Hydraena (Hydraena) bithynica Janssens [ ] | Palearctic | Turkey | Akçat Deresi | Janssens | paratype | 10 |
| Hydraena (Hydraena) byzantina Janssens [ ] | Palearctic | Turkey | Janssens | type | 1 | |
| Hydraena (Hydraena) capta d' Orchymont [ ] | Palearctic | Morocco | D orchymont | paratype | 1 | |
| Hydraena (Hydraena) capta d' Orchymont [ ] | Palearctic | Morocco | D orchymont | paratype | 1 | |
| Hydraena (Hydraena) capta d' Orchymont [ ] | Palearctic | Spain | Arboles | D orchymont | paratype | 2 |
| Hydraena (Hydraena) capta d' Orchymont [ ] | Palearctic | Spain | Arboles | D orchymont | paratype | 2 |
| Hydraena (Hydraena) carmellita Perkins [ ] | Asiatic | New Guinea | Wau | Perkins | paratype | 3 |
| Hydraena (Hydraena) cirratoides Janssens [ ] | Asiatic | India | Darjeeling | Janssens | paratype | 1 |
| Hydraena (Hydraena) colchica Janssens [ ] | Palearctic | Turkey | Hamsi Koy | Janssens | paratype | 1 |
| Hydraena (Hydraena) colchica Janssens [ ] | Palearctic | Turkey | Hamsi Koy | Janssens | type | 1 |
| Hydraena (Hydraena) cornelli Jach à Diaz [ ] | Nearctique | United States of America | Watauqa Co, Boone | Jach et diaz | paratype | 4 |
| Hydraena (Hydraena) coryleti Jach [ ] | ? | Inebolu | Jach | paratype | 4 | |
| Hydraena (Hydraena) dentipalpis Rottenberg [ ] | Palearctic | Turkey | Hamsi Koy | Janssens | paratype | 8 |
| Hydraena (Hydraena) dentipalpis Rottenberg [ ] | Palearctic | Turkey | Kara Hava | Janssens | paratype | 2 |
| Hydraena (Hydraena) dentipalpis Rottenberg [ ] | Palearctic | Turkey | Macka | Janssens | paratype | 1 |
| Hydraena (Hydraena) dentipalpis Rottenberg [ ] | Palearctic | Turkey | Meryemana (Sumela) | Janssens | type | 3 |
| Hydraena (Hydraena) dolichogaster Janssens [ ] | type | 0 | ||||
| Hydraena (Hydraena) dryops Janssens [ ] | Palearctic | Greece | Karystos | Janssens | paratype | 1 |
| Hydraena (Hydraena) dryops Janssens [ ] | Palearctic | Greece | Karystos | Janssens | paratype | 4 |
| Hydraena (Hydraena) dryops Janssens [ ] | Palearctic | Greece | Karystos | Janssens | paratype | 1 |
| Hydraena (Hydraena) dryops Janssens [ ] | Palearctic | Greece | Karystos | Janssens | type | 1 |
| Hydraena (Hydraena) euscelis Janssens [ ] | Palearctic | Turkey | Toros? | Janssens | paratype | 6 |
| Hydraena (Hydraena) finita d' Orchymont [ ] | ? | Karyaes SW | D orchymont | paratype | 4 | |
| Hydraena (Hydraena) finita d' Orchymont [ ] | ? | Karyaes SW | D orchymont | paratype | 4 | |
| Hydraena (Hydraena) galatica Janssens [ ] | Palearctic | Turkey | Camlidere (Isik) | Jansens | paratype | 1 |
| Hydraena (Hydraena) helena d' Orchymont [ ] | Palearctic | Turkey | Akçat Deresi | Janssens | paratype | 4 |
| Hydraena (Hydraena) helena d' Orchymont [ ] | Palearctic | Turkey | Akçat Deresi | Janssens | type | 1 |
| Hydraena (Hydraena) insularis d'Orchymont [ ] | Neotropical | Guadeloupe | Orchymont | type | 1 | |
| Hydraena (Hydraena) ludivicae d' Orchymont [ ] | ? | Gides | D orchymont | paratype | 1 | |
| Hydraena (Hydraena) ludivicae d' Orchymont [ ] | ? | Gides | D orchymont | paratype | 1 | |
| Hydraena (Hydraena) mylasae Jach [ ] | ? | Selimiye | Jach | paratype | 3 | |
| Hydraena (Hydraena) myrmidon janssens [ ] | Palearctic | Greece | Spercheios | Janssens | type | 1 |
| Hydraena (Hydraena) ovata Janssens [ ] | Palearctic | Afghanistan | Mazanah | Janssens | paratype | 1 |
| Hydraena (Hydraena) paraguayensis [ ] | paratype | 2 | ||||
| Hydraena (Hydraena) pindica Janssens [ ] | Palearctic | Greece | Kastania | Janssens | type | 1 |
| Hydraena (Hydraena) platycnemis Jach [ ] | ? | Yayladagi | Jach | paratype | 2 | |
| Hydraena (Hydraena) platysoma Janssens [ ] | Palearctic | Turkey | Artvin | Janssens | type | 1 |
| Hydraena (Hydraena) pontica Janssens [ ] | Palearctic | Turkey | Hamsi Koy | Janssens | paratype | 1 |
| Hydraena (Hydraena) pontica Janssens [ ] | Palearctic | Turkey | Hamsi Koy | Janssens | paratype | 21 |
| Hydraena (Hydraena) processa Perkins [ ] | Asiatic | New Guinea | Wau | Perkins | paratype | 1 |
| Hydraena (Hydraena) processa Perkins [ ] | Asiatic | New Guinea | Wau | Perkins | paratype | 6 |
| Hydraena (Hydraena) quadrata Janssens [ ] | Asiatic | India | Janssens | paratype | 1 | |
| Hydraena (Hydraena) rhodia Jach [ ] | ? | Jach | paratype | 1 | ||
| Hydraena (Hydraena) rhodia Jach [ ] | Palearctic | Greece | Platanos | D orchymont | paratype | 15 |
| Hydraena (Hydraena) rhodia Jach [ ] | Palearctic | Greece | Platanos | Jach | holotype | 1 |
| Hydraena (Hydraena) rhodia Jach [ ] | Palearctic | Greece | Platanos | Jach | paratype | 11 |
| Hydraena (Hydraena) rigua d' Orchymont [ ] | ? | Yquem | D orchymont | paratype | 1 | |
| Hydraena (Hydraena) rigua d' Orchymont [ ] | ? | Yquem | D orchymont | paratype | 1 | |
| Hydraena (Hydraena) simonidea d'Orchymont [ ] | ? | Gide | D orchymont | paratype | 1 | |
| Hydraena (Hydraena) simonidea d'Orchymont [ ] | ? | Gide | D orchymont | paratype | 1 | |
| Hydraena (Hydraena) smyrnensis Sahlberg [ ] | Palearctic | Greece | Pantokatoros | Janssens | type | 1 |
| Hydraena (Hydraena) subgrandis Jach [ ] | Palearctic | Turkey | Umg Namrun | Jach | paratype | 2 |
| Hydraena (Hydraena) taxita Janssens [ ] | Palearctic | Afghanistan | Bashgultal, Nuristan | Janssens | paratype | 3 |
| Hydraena (Hydraena) tenuis Janssens [ ] | Asiatic | India | Madhya, Fradesh, Kamba | Janssens | paratype | 3 |
| Hydraena (Hydraena) turcica Janssens [ ] | Asiatic | amas Dere??? | Janssens | type | 1 | |
| Hydraena (Hydreana) sappho Janssens [ ] | holotype | 1 | ||||
| Hydraena (Hydreana) terraevastatae Jach [ ] | ? | Mutki | Jach | paratype | 1 | |
| Hydraena (Phothydraena) pallidula St. Cl. Dev. [ ] | Palearctic | Algeria | Aïn-Talrarat? | Janssens | paratype | 1 |
| Hydraena (Taenhydraena) exarata Kiesenwetter [ ] | Palearctic | Spain | Cordoba | Jansens | paratype | 1 |
| Hydraena riparia Kugelmann [-brachymera D orchymont] | Palearctic | France | Rhune | D orchymont | type | 1 |
| Hydraena riparia Kugelmann [-brachymera D orchymont] | Palearctic | Spain | El Escorial | D orchymont | paratype | 1 |
| Hydraena riparia Kugelmann [-brachymera D orchymont] | Palearctic | Spain | Escorial - Guadara | D orchymont | paratype | 4 |
| Hydraena riparia Kugelmann [-brachymera D orchymont] | Palearctic | Spain | Sra Guadarrama | D orchymont | paratype | 2 |
| Hydraena sahlbergi d'Orchymont [- ] | Neotropical | Brazil | ' | D orchymont | paratype | 4 |
| Hydraena sahlbergi d'Orchymont [- ] | Neotropical | Brazil | Santa Rita | D orchymont | paratype | 1 |
| Hydraena sauteri d'Orchymont [- ] | ? | Akau | D orchymont | lectotype | 1 | |
| Hydraena sordida Sharp [- ] | ? | Vera Paz | Sharp | paratype | 1 | |
| Hydraena speciosa d' Orchymont [- ] | Asiatic | Izmir | D orchymont | type | 1 |
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