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Hydraena, Taxa Only, Exact Match: 300 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 pacificica   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 110 110
Hydraena dilutipes     Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 109-112 109-112
Hydraena cunninghamensis   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 67 67
Hydraena jubilata   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 36-37 36-37
Hydraena (Monomadraena) acicula     Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 48 48
Hydraena hosseinieorum     Trizzino, Marco, Carnevali, Lucilla, Felici, Stefano De & Audisio, Paolo, 2013, <strong> A revision of <em> Hydraena </ em> species of the “ <em> Haenydra </ em> ” lineage (Coleoptera, Hydraenidae) </ strong>, Zootaxa 3607 (1), pp. 1-173 : 34-40 34-40
Hydraena propria   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 67-68 67-68
Hydraena luminicollis   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 38-39 38-39
Hydraena fasciola     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 38-39 38-39
Hydraena pamphylia     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 32 32
Hydraena (Hydraena) cordata     Benamar, Loubna, Bennas, Nard, Hassoun, Mustapha & Millán, Andrés, 2022, Checklist of Moroccan aquatic beetles (Coleoptera: Hydraenidae Mulsant, 1844) New records and updates, Zootaxa 5129 (4), pp. 451-504 : 456 456
Hydraena altapapua   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 57 57
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 ambiflagellata     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 89-90 89-90
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 atroscintilla   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 35-36 35-36
Hydraena johncoltranei   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 141-142 141-142
Hydraena cameroconcava   sp. nov.  Perkins, Philip D., 2022, Thirty-three new species of water beetles in the genus Hydraena Kugelann from Cameroon (Coleoptera: Hydraenidae), Zootaxa 5203 (1), pp. 1-66 : 9 9
Hydraena monteithi   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 41-42 41-42
Hydraena duohamata   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 16-17 16-17
Hydraena subintegra     Freitag, Hendrik, de Vries, Rick, Paterno, Marta, Maestri, Simone, Delledonne, Massimo, Thompson, Cameron G, Lamed, Helena, Lambert, Rebekah, Fox, Michael F, Gonzalez, Mariela C, Delocado, Emmanuel D, Sabordo, Marc R, Pangantihon, Clister V & Njunjic, Iva, 2021, Hydraena (s. str.) dinarica, new species (Coleoptera: Hydraenidae) along with further records of Hydraena spp. from Durmitor National Park, Montenegro and comments on the DNA barcoding problem with the genus, Biodiversity Data Journal 9, pp. 59892-59892 : 59892 59892
Hydraena morio     Freitag, Hendrik, de Vries, Rick, Paterno, Marta, Maestri, Simone, Delledonne, Massimo, Thompson, Cameron G, Lamed, Helena, Lambert, Rebekah, Fox, Michael F, Gonzalez, Mariela C, Delocado, Emmanuel D, Sabordo, Marc R, Pangantihon, Clister V & Njunjic, Iva, 2021, Hydraena (s. str.) dinarica, new species (Coleoptera: Hydraenidae) along with further records of Hydraena spp. from Durmitor National Park, Montenegro and comments on the DNA barcoding problem with the genus, Biodiversity Data Journal 9, pp. 59892-59892 : 59892 59892
Hydraena fascinata   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 74-75 74-75
Hydraena (Hydraena) bihamata     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 paxillipes   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 61-62 61-62
Hydraena multiarcuata   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 62-64 62-64
Hydraena latisoror   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 22-23 22-23
Hydraena caucasica     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 30 30
Coleoptera   new species  Zwick, Peter, 1977, Australian Hydraena (Coleoptera: Hydraenidae), Australian Journal of Zoology 25, No. 1, pp. 147-184 : 169 169
Hydraena parvipalpis   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 17-19 17-19
Hydraena variopaca   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 94 94
Hydraena habitiva   sp. nov.  PERKINS, PHILIP D., 2014, A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae), Zootaxa 3758 (1), pp. 1-92 : 68-69 68-69
Hydraena hyalina     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 51-52 51-52
Hydraena anaphora     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 52 52
Hydraena rudallensis     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 69-70 69-70
Hydraena bisinuloba   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 31-32 31-32
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 (Holcohydraena) punctata     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) 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 camerocameola   sp. nov.  Perkins, Philip D., 2022, Thirty-three new species of water beetles in the genus Hydraena Kugelann from Cameroon (Coleoptera: Hydraenidae), Zootaxa 5203 (1), pp. 1-66 : 24-25 24-25
Hydraena undetermined     Rogers, D. Christopher & Cruz-Rivera, Edwin, 2021, A preliminary survey of the inland aquatic macroinvertebrate biodiversity of St. Thomas, US Virgin Islands, Journal of Natural History 55 (13 - 14), pp. 799-850 : 829 829
Hydraena tibiopaca   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 101-102 101-102
Hydraena pantanalensis   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 46-47 46-47
Hydraena millenaria   sp. nov.  Perkins, Philip D., 2022, Thirty-three new species of water beetles in the genus Hydraena Kugelann from Cameroon (Coleoptera: Hydraenidae), Zootaxa 5203 (1), pp. 1-66 : 21-22 21-22
Hydraena nitidimenta   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 37-38 37-38
Hydraena forticollis   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 113-114 113-114
Hydraena orchisa   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 138-139 138-139
Hydraena pentarubra   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 95-97 95-97
Hydraena robusta     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 64-65 64-65
Hydraena bubulla   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 70 70
Hydraena huonica     Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 48-49 48-49
Hydraena browni     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 44 44
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     Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 17 17
Hydraena ambiosina   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 81-82 81-82
Hydraena humanica   sp. nov.  PERKINS, PHILIP D., 2014, A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae), Zootaxa 3758 (1), pp. 1-92 : 59-61 59-61
Hydraena quechua     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 45 45
Hydraena receptiva   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 133-134 133-134
Hydraena contorta   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 134-136 134-136
Hydraena (Holcohydraena) pacifica     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 : 63 63
Hydraena pilobova   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 117-120 117-120
Hydraena australica     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 73 73
Hydraena steineri   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 57 57
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 marojejy   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 100-101 100-101
Hydraena perkinsi     DELER-HERNÁNDEZ, ALBERT & DELGADO, JUAN A., 2012, The Hydraenidae of Cuba (Insecta: Coleoptera) I: Contribution to the fauna of eastern Cuba, Zootaxa 3478 (1), pp. 213-238 : 220-222 220-222
Hydraena ambra   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 19-21 19-21
Hydraena diadema   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 62 62
Hydraena reticulobesa   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 86 86
Hydraena (Hydraena) dinarica   sp. n.  Freitag, Hendrik, de Vries, Rick, Paterno, Marta, Maestri, Simone, Delledonne, Massimo, Thompson, Cameron G, Lamed, Helena, Lambert, Rebekah, Fox, Michael F, Gonzalez, Mariela C, Delocado, Emmanuel D, Sabordo, Marc R, Pangantihon, Clister V & Njunjic, Iva, 2021, Hydraena (s. str.) dinarica, new species (Coleoptera: Hydraenidae) along with further records of Hydraena spp. from Durmitor National Park, Montenegro and comments on the DNA barcoding problem with the genus, Biodiversity Data Journal 9, pp. 59892-59892 : 59892 59892
Hydraena altiphila   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 60 60
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 extorris     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 94-95 94-95
Hydraena jubata   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 91-93 91-93
Hydraena gynaephila     Trizzino, Marco, Carnevali, Lucilla, Felici, Stefano De & Audisio, Paolo, 2013, <strong> A revision of <em> Hydraena </ em> species of the “ <em> Haenydra </ em> ” lineage (Coleoptera, Hydraenidae) </ strong>, Zootaxa 3607 (1), pp. 1-173 : 29-33 29-33
Hydraena genuvela   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 21-24 21-24
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 cameropetila   sp. nov.  Perkins, Philip D., 2022, Thirty-three new species of water beetles in the genus Hydraena Kugelann from Cameroon (Coleoptera: Hydraenidae), Zootaxa 5203 (1), pp. 1-66 : 17 17
Hydraena speciosa     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 33-34 33-34
Hydraena     Stanković, Vlatka Mičetić & Jäch, Manfred A., 2012, Description of a new species of the “ Haenydra ” lineage (Coleoptera: Hydraenidae) from the Republic of Macedonia, Zootaxa 3503, pp. 82-88 : 83 83
Hydraena luridipennis     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 54-56 54-56
Hydraena bicarina   sp. nov.  PERKINS, PHILIP D., 2014, A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae), Zootaxa 3758 (1), pp. 1-92 : 77-81 77-81
Hydraena pulchella     PROKIN, Alexander A., LITOVKIN, Stanislav V. & JÄCH, Manfred A., 2015, New records of Hydraenidae and Elmidae (Coleoptera) from Russia and adjacent countries, Fragmenta Faunistica 58 (2), pp. 99-110 : 101 101
Hydraena bisinuata   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 69-72 69-72
Hydraena (Hydraena) leprieuri     Lamine, Smail, Lounaci, Abdelkader & Bennas, Nard, 2019, Biodiversity and chorology of aquatic beetles (Coleoptera: Elmidae and Hydraenidae) in Kabylia (central-north Algeria). New records and updates, Zootaxa 4700 (1), pp. 102-116 : 106 106
Hydraena camerosetosa   sp. nov.  Perkins, Philip D., 2022, Thirty-three new species of water beetles in the genus Hydraena Kugelann from Cameroon (Coleoptera: Hydraenidae), Zootaxa 5203 (1), pp. 1-66 : 29-30 29-30
Hydraena okapa   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 73-74 73-74
Hydraena amplipunctata   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 73-76 73-76
Hydraena mauriciogarciai   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 40 40
Hydraena inplacopaca   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 99 99
Hydraena marginicollis     Robert H. Turnbow, Jr. & Thomas, Michael C., 2008, An annotated checklist of the Coleoptera (Insecta) of the Bahamas, Insecta Mundi 2008 (34), pp. 1-64 : 40 40
Hydraena capacis   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 94 94
Hydraena (Hydraena) audisioi     Lamine, Smail, Lounaci, Abdelkader & Bennas, Nard, 2019, Biodiversity and chorology of aquatic beetles (Coleoptera: Elmidae and Hydraenidae) in Kabylia (central-north Algeria). New records and updates, Zootaxa 4700 (1), pp. 102-116 : 105 105
Hydraena morio     Dovgal, Igor & Pešić, Vladimir, 2012, Suctorian ciliates (Ciliophora, Suctorea) as epibionts of stream-dwelling aquatic beetles (Coleoptera) and water mites (Acari: Hydrachnidia) in the southwestern Palaearctic region, Zootaxa 3166, pp. 34-40 : 37 37
Hydraena ambroides   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 22-23 22-23
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 disparamera   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 105-106 105-106
Hydraena longiloba   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 121-124 121-124
Hydraena cordispina   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 23-24 23-24
Hydraena costiniceps     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 24 24
Hydraena costiniceps     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 24 24
Hydraena     Luna-Luna, Alba Magali, Martins, Caleb Califre, Lopez-Perez, Andres, Ramirez-Ponce, Andres & Contreras-Ramos, Atilano, 2022, Aquatic beetle diversity from Volcan Tacana, Mexico: altitudinal distribution pattern and biogeographical affinity of the fauna, ZooKeys 1111, pp. 301-338 : 301 301
Hydraena cameroarida   sp. nov.  Perkins, Philip D., 2022, Thirty-three new species of water beetles in the genus Hydraena Kugelann from Cameroon (Coleoptera: Hydraenidae), Zootaxa 5203 (1), pp. 1-66 : 23-24 23-24
Hydraena dariensis   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 44 44
Hydraena     Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 18-19 18-19
Hydraena fritzi     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 30 30
Hydraena (Monomadraena) simplicata     Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 60 60
Hydraena remulipes   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 45-46 45-46
Hydraena particeps     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 45 45
Hydraena (Hydraena) tenjikuana     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) 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 limbobesa   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 89-90 89-90
Hydraena curvosa   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 19-20 19-20
Hydraena premordica     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 56 56
Hydraena innuda   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 18-19 18-19
Hydraena thola   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 134-135 134-135
Hydraena finita     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 30 30
Hydraena parva     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 77-78 77-78
Hydraena cameroflagellata   sp. nov.  Perkins, Philip D., 2022, Thirty-three new species of water beetles in the genus Hydraena Kugelann from Cameroon (Coleoptera: Hydraenidae), Zootaxa 5203 (1), pp. 1-66 : 28-29 28-29
Hydraena cameroradiata   sp. nov.  Perkins, Philip D., 2022, Thirty-three new species of water beetles in the genus Hydraena Kugelann from Cameroon (Coleoptera: Hydraenidae), Zootaxa 5203 (1), pp. 1-66 : 29 29
Hydraena coryleti     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 30 30
Hydraena acicula   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 48-49 48-49
Hydraena xingu   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 16 16
Hydraena bucollis   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 142-144 142-144
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 ancyrae     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 29 29
Hydraena akbesiana     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 29 29
Hydraena aurita     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 29 29
Hydraena attaleiae     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 29 29
Hydraena antiochena     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 29 29
Hydraena decepta   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 33-34 33-34
Hydraena fundata   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 117-118 117-118
Hydraena bodemeyeri     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 29 29
Hydraena bicolorata     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 29 29
Hydraena cata     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 29 29
Hydraena fundaequalis   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 118-119 118-119
Hydraena thumbelina   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 29-30 29-30
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 undetermined     Thomas, Michael C., Robert H. Turnbow, Jr. & Steiner, Warren, 2013, An annotated checklist of the Coleoptera (Insecta) of the Cayman Islands, West Indies, Insecta Mundi 2013 (280), pp. 1-56 : 32 32
Hydraena ramuensis   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 65-66 65-66
Hydraena tenuisoror   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 21-22 21-22
Hydraena unita   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 47-48 47-48
Hydraena clystera     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 48 48
Hydraena trichotarsa     Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 26 26
Hydraena rubrifurcata   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 80-81 80-81
Hydraena eichleri     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 30 30
Hydraena inancala   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 93 93
Hydraena ispirensis   sp. nov.  Lu, Ahmet Kasapo Ġ, Jäch, Manfred A. & Skale, André, 2010, Two new species of Hydraena (s. str.) Kugelann (Coleoptera: Hydraenidae) from northern Turkey, Zootaxa 2353, pp. 62-64 : 63-64 63-64
Hydraena carmelita   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 129-130 129-130
Hydraena carinocisiva   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 130 130
Hydraena andranomena   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 130-132 130-132
Hydraena brittoni     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 26-27 26-27
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 pilotumida   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 116 116
Hydraena     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 31
Hydraena tridigita   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 31-32 31-32
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 (Hydraena) africana     Benamar, Loubna, Bennas, Nard, Hassoun, Mustapha & Millán, Andrés, 2022, Checklist of Moroccan aquatic beetles (Coleoptera: Hydraenidae Mulsant, 1844) New records and updates, Zootaxa 5129 (4), pp. 451-504 : 455 455
Hydraena (Holcohydraena) exarata     Benamar, Loubna, Bennas, Nard, Hassoun, Mustapha & Millán, Andrés, 2022, Checklist of Moroccan aquatic beetles (Coleoptera: Hydraenidae Mulsant, 1844) New records and updates, Zootaxa 5129 (4), pp. 451-504 : 455 455
Hydraena (Hydraena) allomorpha     Benamar, Loubna, Bennas, Nard, Hassoun, Mustapha & Millán, Andrés, 2022, Checklist of Moroccan aquatic beetles (Coleoptera: Hydraenidae Mulsant, 1844) New records and updates, Zootaxa 5129 (4), pp. 451-504 : 455 455
Hydraena tetana   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 49-50 49-50
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     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 : 38-39 38-39
Hydraena manjakatompo   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 104-105 104-105
Hydraena key    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 : 70-71 70-71
Hydraena sexsuprema   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 81-82 81-82
Hydraena serripennis   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 24-25 24-25
Hydraena multiloba   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 63-64 63-64
Hydraena (Holcohydraena) chandleri   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 52
Hydraena funda   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 146-147 146-147
Hydraena (Monomadraena) tibiodentipes     Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 67-68 67-68
Hydraena lubrica   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 52-53 52-53
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 ulna   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 121-122 121-122
Hydraena lassulipes   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 38-39 38-39
Hydraena     Lee, Dae-Hyun & Ahn, Kee-Jeong, 2016, A taxonomic review of the Hydraenidae in South Korea (Coleoptera), ZooKeys 634, pp. 57-78 : 59 59
Hydraena metzeni   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 119 119
Hydraena converga   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 27-28 27-28
Hydraena (Hydraena) minutissima     Freitag, Hendrik, de Vries, Rick, Paterno, Marta, Maestri, Simone, Delledonne, Massimo, Thompson, Cameron G, Lamed, Helena, Lambert, Rebekah, Fox, Michael F, Gonzalez, Mariela C, Delocado, Emmanuel D, Sabordo, Marc R, Pangantihon, Clister V & Njunjic, Iva, 2021, Hydraena (s. str.) dinarica, new species (Coleoptera: Hydraenidae) along with further records of Hydraena spp. from Durmitor National Park, Montenegro and comments on the DNA barcoding problem with the genus, Biodiversity Data Journal 9, pp. 59892-59892 : 59892 59892
Hydraena tobogan   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 33-34 33-34
Hydraena divisa   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 120-121 120-121
Hydraena cygnus     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 91-92 91-92
Hydraena (Hydraena) rivularis     Lamine, Smail, Lounaci, Abdelkader & Bennas, Nard, 2019, Biodiversity and chorology of aquatic beetles (Coleoptera: Elmidae and Hydraenidae) in Kabylia (central-north Algeria). New records and updates, Zootaxa 4700 (1), pp. 102-116 : 107 107
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 camerojocula   sp. nov.  Perkins, Philip D., 2022, Thirty-three new species of water beetles in the genus Hydraena Kugelann from Cameroon (Coleoptera: Hydraenidae), Zootaxa 5203 (1), pp. 1-66 : 11 11
Hydraena malkini     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 45 45
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 billi     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 43 43
Hydraena punctilata   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 17-18 17-18
Hydraena amazonica   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 27-28 27-28
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 flagella   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 65-66 65-66
Hydraena pertransversa   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 90 90
Hydraena carica     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 29 29
Hydraena nanocolorata   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 63-64 63-64
Hydraena processa   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 111-112 111-112
Hydraena bacchusi   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 95-96 95-96
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 storeyi   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 85-86 85-86
Hydraena mianminica   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 35 35
Hydraena australula   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 76 76
Hydraena (Holcohydraena) arenicola     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 : 62 62
Hydraena (Holcohydraena) appalachicola     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 : 61 61
Coleoptera   new species  Kugelann, Johann Gottlieb, 1794, Verzeichniss der in einigen Gegenden Preussens bis jetzt entdeckten Käfer-Arten, nebst kurzen Nachrichten von denselben, Neuestes Magazin für die Liebhaber der Entomologie / Schneider 1, No. 5, pp. 513-582 : 579 579
Hydraena (Hydraena) antiatlantica     Benamar, Loubna, Bennas, Nard, Hassoun, Mustapha & Millán, Andrés, 2022, Checklist of Moroccan aquatic beetles (Coleoptera: Hydraenidae Mulsant, 1844) New records and updates, Zootaxa 5129 (4), pp. 451-504 : 455 455
Hydraena steineri     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 57 57
Hydraena gereckei   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 101-102 101-102
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 penultimata   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 54-55 54-55
Hydraena gracilidelphis   sp. nov.  Trizzino, Marco, Valladares, Luis F., Garrido, Josefina & Audisio, Paolo, 2012, Morphological reply to a DNA call: a new cryptic species of Hydraena from western Europe, with a complete overview of the Hydraena gracilis complex (Coleoptera: Hydraenidae: “ Haenydra ” lineage), Journal of Natural History 46 (17 - 18), pp. 1065-1078 : 1067-1072 1067-1072
Hydraena revelovela   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 46 46
Hydraena quatriloba   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 35-38 35-38
Hydraena anatolica     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 29 29
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 ampla   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 61 61
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 shorti   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 41-42 41-42
Hydraena sexarcuata   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 47-48 47-48
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 impala   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 106 106
Hydraena delvasi     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 50 50
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 (Hydraena) gattolliati     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 : 258 258
Hydraena copulata   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 71-72 71-72
Hydraena spinissima   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 35-36 35-36
Hydraena dorrigoensis   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 36 36
Hydraena buscintilla   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 25-26 25-26
Hydraena acumena   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 55-56 55-56
Hydraena casacolumna   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 53-54 53-54
Hydraena prokini     Trizzino, Marco, Carnevali, Lucilla, Felici, Stefano De & Audisio, Paolo, 2013, <strong> A revision of <em> Hydraena </ em> species of the “ <em> Haenydra </ em> ” lineage (Coleoptera, Hydraenidae) </ strong>, Zootaxa 3607 (1), pp. 1-173 : 40-62 40-62
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     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 25-26 25-26
Hydraena saluta   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 87-88 87-88
Hydraena spatula     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 58 58
Hydraena quadriplumipes   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 77-78 77-78
Hydraena hypipamee   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 68 68
Hydraena rosannae     Trizzino, Marco, Carnevali, Lucilla, Felici, Stefano De & Audisio, Paolo, 2013, <strong> A revision of <em> Hydraena </ em> species of the “ <em> Haenydra </ em> ” lineage (Coleoptera, Hydraenidae) </ strong>, Zootaxa 3607 (1), pp. 1-173 : 64-97 64-97
Hydraena ravoandrina   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 105-106 105-106
Hydraena ecuadormica   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 56 56
Hydraena simplipes     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 63-64 63-64
Hydraena trinidensis     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 42 42
Hydraena assimilis     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 29 29
Hydraena reflectiva   sp. nov.  PERKINS, PHILIP D., 2014, A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae), Zootaxa 3758 (1), pp. 1-92 : 18-19 18-19
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 barbipes     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 53-54 53-54
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     Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 15-16 15-16
Hydraena biseptosa   sp. nov.  PERKINS, PHILIP D., 2014, A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae), Zootaxa 3758 (1), pp. 1-92 : 70-73 70-73
Hydraena aquila   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 75-76 75-76
Hydraena armeniaca     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 29 29
Hydraena lilianae   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 37-38 37-38
Hydraena paraguayensis     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 38 38
Hydraena pavicula     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 38 38
Hydraena smyrnensis     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 37 37
Hydraena phainops   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 31-32 31-32
Hydraena cheesmanae   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 46 46
Hydraena (Spanglerina) arcei   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 : 30-36 30-36
Hydraena trapezoidalis     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 115-116 115-116
Hydraena simplicicollis     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 24-25 24-25
Hydraena (Monomadraena) impressicollis     Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 38 38
Hydraena camerocorona   sp. nov.  Perkins, Philip D., 2022, Thirty-three new species of water beetles in the genus Hydraena Kugelann from Cameroon (Coleoptera: Hydraenidae), Zootaxa 5203 (1), pp. 1-66 : 10-11 10-11
Hydraena photogenica   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 139-140 139-140
Hydraena clavulata   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 137-138 137-138
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 ramuquintana   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 125-126 125-126
Hydraena apexa   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 123-124 123-124
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 weiri   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 48 48
Hydraena multispina     Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 22 22
Hydraena pennsylvanica     Ciegler, Janet C. & Gemmill, Robert M., 2018, Additional state records for Coleoptera of South Carolina, Insecta Mundi 636, pp. 1-5 : 4 4
Hydraena spangleri     Ciegler, Janet C. & Gemmill, Robert M., 2018, Additional state records for Coleoptera of South Carolina, Insecta Mundi 636, pp. 1-5 : 4 4
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 smyrnensis     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 33 33
Hydraena tritropis   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 117-118 117-118
Hydraena biundulata   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 53-54 53-54
Hydraena amplexa   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 57-58 57-58
Hydraena appetita   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 65-66 65-66
Hydraena pilipes     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 109-110 109-110
Hydraena camerocordata   sp. nov.  Perkins, Philip D., 2022, Thirty-three new species of water beetles in the genus Hydraena Kugelann from Cameroon (Coleoptera: Hydraenidae), Zootaxa 5203 (1), pp. 1-66 : 26-27 26-27
Hydraena mitchellensis   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 13-14 13-14
Hydraena levifurcata   sp. nov.  Perkins, Philip D., 2017, Hydraenidae of Madagascar (Insecta: Coleoptera), Zootaxa 4342 (1), pp. 1-264 : 89-90 89-90
Hydraena reticulositis   sp. nov.  PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 15-16 15-16
Hydraena kellymilleri   sp. nov.  Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 54 54
Hydraena diazi   sp. nov.  Trizzino, Marco, Jäch, Manfred A., Audisio, Paolo & Ribera, Ignacio, 2011, Molecular and morphological analyses confirm two new species of the Hydraena emarginata – saga clade (Coleoptera, Hydraenidae) from Spain and France, Zootaxa 2760, pp. 29-38 : 30-32 30-32
Hydraena lucernae     PERKINS, PHILIP D., 2007, A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae), Zootaxa 1489 (1), pp. 1-207 : 79 79
Hydraena injectiva   sp. nov.  PERKINS, PHILIP D., 2014, A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae), Zootaxa 3758 (1), pp. 1-92 : 34-35 34-35
Hydraena transvallis   sp. nov.  Perkins, Philip D., 2011, New species (130) of the hyperdiverse aquatic beetle genus Hydraena Kugelann from Papua New Guinea, and a preliminary analysis of areas of endemism (Coleoptera: Hydraenidae) 2944, Zootaxa 2944 (1), pp. 1-417 : 99-100 99-100
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 abbasigili     Ertorun, Nesil, Jäch, Manfred A., Kasapoġlu, Ahmet & Darilmaz, Mustafa C., 2011, Checklist of the Hydraenidae (Coleoptera) of Turkey, with notes on distribution, Zootaxa 3055 (1), pp. 22-42 : 29 29

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Specimens