Hydraenopsis, Taxa Only, Exact Match: 100 Treatments

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Hydraena (Hydraenopsis) paulmoritz   sp. nov.  Jäch, Manfred A., Díaz, Juan A. & Skale, Andre, 2013, The Hydraenidae (Coleoptera) Of The Republic Of Singapore, Raffles Bulletin of Zoology 61 (1), pp. 53-71 : 66-67 66-67
Hydraena (Hydraenopsis) longicollis     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 67 67
Hydraena (Hydraenopsis) jojoorculloi   sp. nov.  Freitag, Hendrik & Jäch, Manfred A., 2007, Revision of the species of Hydraena Kugelann (Coleoptera: Hydraenidae) from Palawan and Busuanga, with descriptions of eleven new species, and redescription of Hydraena (Hydraenopsis) scabra d’Orchymont, 1925, Zootaxa 1431, pp. 1-44 : 12-15 12-15
Hydraena (Hydraenopsis) pseudopalawanensis   sp. nov.  Freitag, Hendrik & Jäch, Manfred A., 2007, Revision of the species of Hydraena Kugelann (Coleoptera: Hydraenidae) from Palawan and Busuanga, with descriptions of eleven new species, and redescription of Hydraena (Hydraenopsis) scabra d’Orchymont, 1925, Zootaxa 1431, pp. 1-44 : 29-31 29-31
Hydraena (Hydraenopsis) arizonica     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 64 64
Hydraena (Hydraenopsis) spiralis   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 27-29 27-29
Hydraena (Hydraenopsis) kodadai   sp. nov.  Freitag, Hendrik & Jäch, Manfred A., 2007, Revision of the species of Hydraena Kugelann (Coleoptera: Hydraenidae) from Palawan and Busuanga, with descriptions of eleven new species, and redescription of Hydraena (Hydraenopsis) scabra d’Orchymont, 1925, Zootaxa 1431, pp. 1-44 : 24-26 24-26
Hydraena (Hydraenopsis) concatenata   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 17 17
Hydraena (Hydraenopsis) hyalina     Benetti, Cesar J., Valladares, Luis F., Delgado, Juan A. & Hamada, Neusa, 2021, Morphological remarks on Adelphydraena amazonica Perkins & Ribera, 2020 and new records of two other Hydraenidae from Brazil (Coleoptera), Zootaxa 4966 (1), pp. 61-68 : 67-68 67-68
Hydraena (Hydraenopsis) matthiasi   sp. nov.  Deler-Hernández, Albert, Fikáček, Martin & Delgado, Juan A., 2017, The Hydraenidae of Cuba (Insecta: Coleoptera) III. Description of two new hygropetric species of Hydraena Kugelann, Zootaxa 4250 (5), pp. 434-446 : 439-443 439-443
Hydraena (Hydraenopsis) scintillutea     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 430 430
Hydraena (Hydraenopsis) terralta     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 430 430
Hydraena (Hydraenopsis) saotometerrestris   sp. nov.  Bilton, David T., 2023, Two new species of Hydraena Kugelann, 1794 from São Tomé Island-an apparent adaptive radiation (Coleoptera, Hydraenidae), Zootaxa 5254 (4), pp. 593-600 : 594-595 594-595
Hydraena (Hydraenopsis) lenticula   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 55-57 55-57
Hydraena (Hydraenopsis) particeps     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 68 68
Hydraena (Hydraenopsis) marginicollis     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 67-68 67-68
Hydraena (Hydraenopsis) formula     Jäch, Manfred A., Díaz, Juan A. & Skale, Andre, 2013, The Hydraenidae (Coleoptera) Of The Republic Of Singapore, Raffles Bulletin of Zoology 61 (1), pp. 53-71 : 54-55 54-55
Hydraena (Hydraenopsis) pulsatrix     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 68-69 68-69
Hydraena (Hydraenopsis) sahlbergi     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 430 430
Hydraena (Hydraenopsis) palawanensis     Freitag, Hendrik, 2013, Hydraena (Hydraenopsis) ateneo, new species (Coleoptera, Hydraenidae) and other aquatic Polyphaga from a small habitat patch in a highly urbanized landscape of Metro Manila, Philippines, ZooKeys 329, pp. 9-21 : 16 16
Hydraena (Hydraenopsis) michaelbalkei   sp. nov.  Jäch, Manfred A., Díaz, Juan A. & Skale, Andre, 2013, The Hydraenidae (Coleoptera) Of The Republic Of Singapore, Raffles Bulletin of Zoology 61 (1), pp. 53-71 : 65 65
Hydraena (Hydraenopsis) guanajuatoensis   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 20 20
Hydraena (Hydraenopsis) curvosa     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 428 428
Hydraena (Hydraenopsis) hyalina     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 428 428
Hydraena (Hydraenopsis) nanoscintilla     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 428 428
Hydraena (Hydraenopsis) bahiana     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 427-428 427-428
Hydraena (Hydraenopsis) browni     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 428 428
Hydraena (Hydraenopsis) castanescens   sp. nov.  Freitag, Hendrik & Jäch, Manfred A., 2007, Revision of the species of Hydraena Kugelann (Coleoptera: Hydraenidae) from Palawan and Busuanga, with descriptions of eleven new species, and redescription of Hydraena (Hydraenopsis) scabra d’Orchymont, 1925, Zootaxa 1431, pp. 1-44 : 19-22 19-22
Hydraena (Hydraenopsis) unita     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 430 430
Hydraena (Hydraenopsis) bahiana   sp. nov.  Benetti, Cesar J., Valladares, Luis F., Delgado, Juan A. & Hamada, Neusa, 2022, Hydraena bahiana sp. n., a new minute moss beetle (Coleoptera, Hydraenidae) from highlands of Northeast Brazil, Zootaxa 5128 (4), pp. 538-546 : 539-545 539-545
Hydraena (Hydraenopsis) orcula     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 428 428
Hydraena (Hydraenopsis) fontana     Ghosh, Joyjit, Saini, Jagdish, Gupta, Devanshu, Ghosh, Sujit Kumar & Chandra, Kailash, 2022, A Catalogue of Indian Hydraenidae (Insecta: Coleoptera), Zootaxa 5087 (4), pp. 558-570 : 561-562 561-562
Hydraena (Hydraenopsis) tenuis     Ghosh, Joyjit, Saini, Jagdish, Gupta, Devanshu, Ghosh, Sujit Kumar & Chandra, Kailash, 2022, A Catalogue of Indian Hydraenidae (Insecta: Coleoptera), Zootaxa 5087 (4), pp. 558-570 : 562 562
Hydraena (Hydraenopsis) formula     Ghosh, Joyjit, Saini, Jagdish, Gupta, Devanshu, Ghosh, Sujit Kumar & Chandra, Kailash, 2022, A Catalogue of Indian Hydraenidae (Insecta: Coleoptera), Zootaxa 5087 (4), pp. 558-570 : 562 562
Hydraena (Hydraenopsis) reducta   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 24 24
Hydraena (Hydraenopsis) palawanensis   sp. nov.  Freitag, Hendrik & Jäch, Manfred A., 2007, Revision of the species of Hydraena Kugelann (Coleoptera: Hydraenidae) from Palawan and Busuanga, with descriptions of eleven new species, and redescription of Hydraena (Hydraenopsis) scabra d’Orchymont, 1925, Zootaxa 1431, pp. 1-44 : 26-29 26-29
Hydraena (Hydraenopsis) josefinae     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 428 428
Hydraena (Hydraenopsis) bituberculata     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 64 64
Hydraena (Hydraenopsis) campbelli     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 64-65 64-65
Hydraena (Hydraenopsis) jacobsoni     Jäch, Manfred A., Díaz, Juan A. & Skale, Andre, 2013, The Hydraenidae (Coleoptera) Of The Republic Of Singapore, Raffles Bulletin of Zoology 61 (1), pp. 53-71 : 62-65 62-65
Hydraena (Hydraenopsis)     PERKINS, PHILIP D., 2014, A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae), Zootaxa 3758 (1), pp. 1-92 : 19 19
Hydraena (Hydraenopsis) maculicollis     Ghosh, Joyjit, Saini, Jagdish, Gupta, Devanshu, Ghosh, Sujit Kumar & Chandra, Kailash, 2022, A Catalogue of Indian Hydraenidae (Insecta: Coleoptera), Zootaxa 5087 (4), pp. 558-570 : 562 562
Hydraena (Hydraenopsis) ateneo   sp. n.  Freitag, Hendrik, 2013, Hydraena (Hydraenopsis) ateneo, new species (Coleoptera, Hydraenidae) and other aquatic Polyphaga from a small habitat patch in a highly urbanized landscape of Metro Manila, Philippines, ZooKeys 329, pp. 9-21 : 12-15 12-15
Hydraena (Hydraenopsis) guadelupensis     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 66 66
Hydraena (Hydraenopsis) cuspidicollis     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 66 66
Hydraena (Hydraenopsis) pocilla   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 22-24 22-24
Hydraena (Hydraenopsis) bubi   sp. nov.  Hernando, Carles & Ribera, Ignacio, 2017, Two new terrestrial species of Hydraena Kugelann from the island of Bioko, Gulf of Guinea (Coleoptera: Hydraenidae), Zootaxa 4238 (2), pp. 281-286 : 281-283 281-283
Hydraena (Hydraenopsis) singaporensis   sp. nov.  Jäch, Manfred A., Díaz, Juan A. & Skale, Andre, 2013, The Hydraenidae (Coleoptera) Of The Republic Of Singapore, Raffles Bulletin of Zoology 61 (1), pp. 53-71 : 67-68 67-68
Hydraena (Hydraenopsis) pantitillata   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 47-50 47-50
Hydraena (Hydraenopsis) bicandida   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 15 15
Hydraena (Hydraenopsis) guatemala     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 66 66
Hydraena (Hydraenopsis) zetteli   sp. nov.  Freitag, Hendrik & Jäch, Manfred A., 2007, Revision of the species of Hydraena Kugelann (Coleoptera: Hydraenidae) from Palawan and Busuanga, with descriptions of eleven new species, and redescription of Hydraena (Hydraenopsis) scabra d’Orchymont, 1925, Zootaxa 1431, pp. 1-44 : 17-19 17-19
Hydraena (Hydraenopsis) panelephanta   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 47 47
Hydraena (Hydraenopsis) temascaltepecica   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 30 30
Hydraena (Hydraenopsis) nielshaggei   sp. nov.  Freitag, Hendrik & Jäch, Manfred A., 2007, Revision of the species of Hydraena Kugelann (Coleoptera: Hydraenidae) from Palawan and Busuanga, with descriptions of eleven new species, and redescription of Hydraena (Hydraenopsis) scabra d’Orchymont, 1925, Zootaxa 1431, pp. 1-44 : 15-17 15-17
Hydraena (Hydraenopsis)     PERKINS, PHILIP D., 2014, A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae), Zootaxa 3758 (1), pp. 1-92 : 6 6
Hydraena (Hydraenopsis)     PERKINS, PHILIP D., 2014, A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae), Zootaxa 3758 (1), pp. 1-92 : 59 59
Hydraena (Hydraenopsis) mahensis     Jaech, Manfred A. & Delgado, Juan A., 2016, Hydraena Kugelann, 1794 (Coleoptera, Hydraenidae) from the Seychelles, Indian Ocean, with description of a new species, ZooKeys 623, pp. 75-88 : 76-77 76-77
Hydraena (Hydraenopsis)     PERKINS, PHILIP D., 2014, A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae), Zootaxa 3758 (1), pp. 1-92 : 38 38
Hydraena (Hydraenopsis) manguao   sp. nov.  Freitag, Hendrik & Jäch, Manfred A., 2007, Revision of the species of Hydraena Kugelann (Coleoptera: Hydraenidae) from Palawan and Busuanga, with descriptions of eleven new species, and redescription of Hydraena (Hydraenopsis) scabra d’Orchymont, 1925, Zootaxa 1431, pp. 1-44 : 31-32 31-32
Hydraena (Hydraenopsis) blancae   sp. nov.  Deler-Hernández, Albert, Fikáček, Martin & Delgado, Juan A., 2017, The Hydraenidae of Cuba (Insecta: Coleoptera) III. Description of two new hygropetric species of Hydraena Kugelann, Zootaxa 4250 (5), pp. 434-446 : 435-439 435-439
Hydraena (Hydraenopsis) saintvincentensis   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 50-52 50-52
Hydraena (Hydraenopsis) pantanalensis     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 428 428
Hydraena (Hydraenopsis) quadricollis     Ribera, Ignacio, Hernando, Carles & Cieslak, Alexandra, 2019, Aquatic Coleoptera of North Oman, with description of new species of Hydraenidae and Hydrophilidae, Acta Entomologica Musei Nationalis Pragae 59 (1), pp. 253-272 : 259 259
Hydraena (Hydraenopsis) belicollis   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 12-15 12-15
Hydraena (Hydraenopsis) pernambucana   sp. nov.  Benetti, Cesar J., Valladares, Luis F., Delgado, Juan A. & Hamada, Neusa, 2020, Two new species of Hydraena Kugelann, 1794 from Brazil (Coleoptera: Hydraenidae), Zootaxa 4750 (3), pp. 391-402 : 398-401 398-401
Hydraena (Hydraenopsis) miyatakei     Lee, Dae-Hyun & Ahn, Kee-Jeong, 2016, A taxonomic review of the Hydraenidae in South Korea (Coleoptera), ZooKeys 634, pp. 57-78 : 62-63 62-63
Hydraena (Hydraenopsis) comicala   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 52-55 52-55
Hydraena (Hydraenopsis) scabra     Freitag, Hendrik & Jäch, Manfred A., 2007, Revision of the species of Hydraena Kugelann (Coleoptera: Hydraenidae) from Palawan and Busuanga, with descriptions of eleven new species, and redescription of Hydraena (Hydraenopsis) scabra d’Orchymont, 1925, Zootaxa 1431, pp. 1-44 : 6-11 6-11
Hydraena (Hydraenopsis) belilymba   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 10-12 10-12
Hydraena (Hydraenopsis) josefinae   sp. nov.  Benetti, Cesar J., Valladares, Luis F., Delgado, Juan A. & Hamada, Neusa, 2020, Two new species of Hydraena Kugelann, 1794 from Brazil (Coleoptera: Hydraenidae), Zootaxa 4750 (3), pp. 391-402 : 392-398 392-398
Hydraena (Hydraenopsis) pernambucana     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 429 429
Hydraena (Hydraenopsis) hintoni     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 428 428
Hydraena (Hydraenopsis) scintillasolata   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 26-27 26-27
Hydraena (Hydraenopsis) scabra     Freitag, Hendrik, 2013, Hydraena (Hydraenopsis) ateneo, new species (Coleoptera, Hydraenidae) and other aquatic Polyphaga from a small habitat patch in a highly urbanized landscape of Metro Manila, Philippines, ZooKeys 329, pp. 9-21 : 15-16 15-16
Hydraena (Hydraenopsis) pontequula     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 68 68
Hydraena (Hydraenopsis) insularis     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 67 67
Hydraena (Hydraenopsis) leechi     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 67 67
Hydraena (Hydraenopsis) hosiwergi   sp. nov.  Freitag, Hendrik & Jäch, Manfred A., 2007, Revision of the species of Hydraena Kugelann (Coleoptera: Hydraenidae) from Palawan and Busuanga, with descriptions of eleven new species, and redescription of Hydraena (Hydraenopsis) scabra d’Orchymont, 1925, Zootaxa 1431, pp. 1-44 : 33-36 33-36
Hydraena (Hydraenopsis) mulanje   sp. nov.  Bilton, David T., 2023, New species and new records of minute moss beetles from East Africa (Coleoptera: Hydraenidae), Acta Entomologica Musei Nationalis Pragae 63 (1), pp. 103-110 : 106-107 106-107
Hydraena (Hydraenopsis) dimorpha     Ghosh, Joyjit, Saini, Jagdish, Gupta, Devanshu, Ghosh, Sujit Kumar & Chandra, Kailash, 2022, A Catalogue of Indian Hydraenidae (Insecta: Coleoptera), Zootaxa 5087 (4), pp. 558-570 : 561 561
Hydraenopsis     Ghosh, Joyjit, Saini, Jagdish, Gupta, Devanshu, Ghosh, Sujit Kumar & Chandra, Kailash, 2022, A Catalogue of Indian Hydraenidae (Insecta: Coleoptera), Zootaxa 5087 (4), pp. 558-570 : 561 561
Hydraena (Hydraenopsis) matyoti   sp. n.  Jaech, Manfred A. & Delgado, Juan A., 2016, Hydraena Kugelann, 1794 (Coleoptera, Hydraenidae) from the Seychelles, Indian Ocean, with description of a new species, ZooKeys 623, pp. 75-88 : 77-83 77-83
Hydraena (Hydraenopsis) dilutipes     Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 109 109
Hydraena (Hydraenopsis) incurva     Ghosh, Joyjit, Saini, Jagdish, Gupta, Devanshu, Ghosh, Sujit Kumar & Chandra, Kailash, 2022, A Catalogue of Indian Hydraenidae (Insecta: Coleoptera), Zootaxa 5087 (4), pp. 558-570 : 562 562
Hydraena (Hydraenopsis) alterra     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 427 427
Hydraena (Hydraenopsis) anaphora     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 427 427
Hydraena (Hydraenopsis) panbrevis   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 45-47 45-47
Hydraena (Hydraenopsis) indica     Ghosh, Joyjit, Saini, Jagdish, Gupta, Devanshu, Ghosh, Sujit Kumar & Chandra, Kailash, 2022, A Catalogue of Indian Hydraenidae (Insecta: Coleoptera), Zootaxa 5087 (4), pp. 558-570 : 562 562
Hydraenidae     Lee, Dae-Hyun & Ahn, Kee-Jeong, 2016, A taxonomic review of the Hydraenidae in South Korea (Coleoptera), ZooKeys 634, pp. 57-78 : 62 62
Hydraena (Hydraenopsis) spangleri     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 69 69
Hydraena (Hydraenopsis) sabella     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 69 69
Hydraena (Hydraenopsis) multivillosa   sp. nov.  Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 20-22 20-22
Hydraena (Hydraenopsis) busuanga   sp. nov.  Freitag, Hendrik & Jäch, Manfred A., 2007, Revision of the species of Hydraena Kugelann (Coleoptera: Hydraenidae) from Palawan and Busuanga, with descriptions of eleven new species, and redescription of Hydraena (Hydraenopsis) scabra d’Orchymont, 1925, Zootaxa 1431, pp. 1-44 : 36-38 36-38
Hydraena (Hydraenopsis) wittmeri     Ghosh, Joyjit, Saini, Jagdish, Gupta, Devanshu, Ghosh, Sujit Kumar & Chandra, Kailash, 2022, A Catalogue of Indian Hydraenidae (Insecta: Coleoptera), Zootaxa 5087 (4), pp. 558-570 : 562 562
Hydraena (Hydraenopsis) quadricollis     Salah, Mohamed, Cueto, Juan Antonio Régil & Valladares, Luis F., 2014, An annotated checklist of the aquatic Polyphaga (Coleoptera) of Egypt I. Family Hydraenidae, Zootaxa 3873 (3), pp. 275-284 : 277 277
Hydraena (Hydraenopsis) plaumanni     Benetti, Cesar J. & Hamada, Neusa, 2022, Annotated checklist of Hydraenidae (Coleoptera, Polyphaga) of Brazil, Zootaxa 5165 (3), pp. 425-434 : 429 429
Hydraena (Hydraenopsis) d-destina     Perkins, Philip D., 2023, New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae), Zootaxa 5367 (1), pp. 1-86 : 66 66
Hydraena (Hydraenopsis)     PERKINS, PHILIP D., 2014, A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae), Zootaxa 3758 (1), pp. 1-92 : 50 50
Hydraena (Hydraenopsis) hendrichi   sp. nov.  Jäch, Manfred A., Díaz, Juan A. & Skale, Andre, 2013, The Hydraenidae (Coleoptera) Of The Republic Of Singapore, Raffles Bulletin of Zoology 61 (1), pp. 53-71 : 55-62 55-62

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