平唇水龟甲属

平唇水龟甲属（学名：Hydraena）为细牙虫科的一个属。 本属包括以下物种： Hydraena abbasigili Jäch, 1988 Hydraena abdita Orchymont, 1948 Hydraena abyssinica Régimbart, 1905 Hydraena accurata Orchymont, 1948 Hydraena achaica Jäch, 1995 Hydraena acicula Perkins, 2017 Hydraena acumena Perkins, 2011 Hydraena adelbertensis Perkins, 2011 Hydraena adrastea Orchymont, 1948 Hydraena aethaliensis Breit, 1917 Hydraena affirmata Perkins, 2007 Hydraena affusa Orchymont, 1936 非洲细牙虫 Hydraena africana Kuwert, 1888 Hydraena akameku Perkins, 2011 Hydraena (Hydraena) akbesiana (Audisio, De Biase & Jäch, 1993) Hydraena albai Sáinz-Cantero, 1993 Hydraena alberti J.Balfour-Browne, 1950 Hydraena alcantarana Ieniştea, 1985 Hydraena algerina Kaddouri, 1992 Hydraena alia Orchymont, 1934 Hydraena aliciae Jäch & Díaz, 2005 Hydraena allomorpha Lagar & Fresneda, 1990 Hydraena alluaudi Régimbart, 1906 Hydraena alpicola Pretner, 1931 Hydraena (Hydraena) altamirensis Díaz & Garrido, 1993 Hydraena altapapua Perkins, 2011 Hydraena alternata Perkins, 1980 Hydraena alterra Perkins, 1980 Hydraena (Hydraena) alticola Skale & Jäch, 2006 Hydraena altiphila Perkins, 2011 Hydraena amazonica Perkins, 2011 Hydraena ambiflagellata Zwick, 1977 Hydraena ambigua Ganglbauer, 1901 Hydraena ambiosina Perkins, 2007 Hydraena ambohitantely Perkins, 2017 Hydraena ambra Perkins, 2011 Hydraena ambripes Perkins, 2011 Hydraena ambroides Perkins, 2011 Hydraena americana Jäch, 1993 Hydraena amidensis Jäch, 1988 Hydraena ampla Perkins, 2011 Hydraena amplexa Perkins, 2017 Hydraena amplipunctata Perkins, 2017 Hydraena anaphora Perkins, 1980 Hydraena (Hydraena) anatolica E.Janssens, 1963 Hydraena ancylis Perkins, 1980 Hydraena ancyrae Jäch, 1992 Hydraena andalusa Lagar & Fresneda, 1990 Hydraena andranomena Perkins, 2017 Hydraena andreinii Orchymont, 1934 Hydraena angelitofelipepunoi Freitag & Hornyák, 2021 Hydraena angulicollis Notman, 1921 Hydraena angulosa Mulsant, 1844 Hydraena angustata Sturm, 1836 Hydraena anisonycha Perkins, 1980 Hydraena antaria Perkins, 2007 Hydraena antiatlantica Jäch, Aguilera & Hernando, 1998 Hydraena antiochena Jäch, 1988 Hydraena antsahabe Perkins, 2017 Hydraena apertista Perkins, 2011 Hydraena apexa Perkins, 2011 Hydraena appalachicola Perkins, 1980 Hydraena appetita Perkins, 2007 Hydraena aquila Perkins, 2011 Hydraena arabica J.Balfour-Browne, 1951 Hydraena arachthi Ferro & Jäch, 2000 Hydraena arcta Perkins, 2007 Hydraena arenicola Perkins, 1980 Hydraena argutipes Perkins, 1980 Hydraena (Hydraena) ariana E.Janssens, 1962 Hydraena arizonica Perkins, 1980 Hydraena armata Reitter, 1881 Hydraena armatura Perkins, 2014 Hydraena (Hydraena) armeniaca E.Janssens, 1968 Hydraena armipalpis Jäch & Díaz, 2000 Hydraena armipes Rey, 1885 Hydraena (Hydraena) aroensis (Ferro, 1992) Hydraena arta Perkins, 2017 Hydraena arunensis Skale & Jäch, 2009 Hydraena ascensa Perkins, 2007 Hydraena assimilis Rey, 1885 Hydraena ateneo Freitag, 2013 Hydraena athertonica Perkins, 2007 Hydraena atlantica Perkins, 1980 Hydraena atrata Desbrochers des Loges, 1891 Hydraena atroscintilla Perkins, 2011 Hydraena attaleiae Ferro, 1984 Hydraena audisioi Jäch, 1992 Hydraena aulaarta Perkins, 2011 Hydraena aurita Jäch, 1988 Hydraena australica Zwick, 1977 Hydraena australula Perkins, 2007 Hydraena austrobesa Perkins, 2011 Hydraena avuncula Jäch, 1988 Hydraena bacchusi Perkins, 2011 Hydraena (Hydraena) bactriana E.Janssens, 1962 Hydraena bahiana Benetti, Valladares, Delgado & Hamada, 2022 Hydraena bakriensis Skale & Jäch, 2011 Hydraena balearica Orchymont, 1930 Hydraena balfourbrownei Bameul, 1986 Hydraena balkei Perkins, 2011 Hydraena balli Orchymont, 1940 Hydraena barbipes Zwick, 1977 Hydraena barricula Perkins, 1980 Hydraena barrosi Orchymont, 1934 Hydraena bedeli Berthélemy, 1992 Hydraena belgica Orchymont, 1930 Hydraena beniensis Perkins, 2011 Hydraena benjaminus Jäch & Díaz, 2006 Hydraena bensae Ganglbauer, 1901 Hydraena bergeri (E.Janssens, 1972) Hydraena bergsteni Perkins, 2017 Hydraena (Hydraena) berthelemyana Jäch, Dia & Díaz, 2006 Hydraena berytus Jäch, 1986 Hydraena beyarslani Jäch, 1988 Hydraena bicarina Perkins, 2014 Hydraena bicarinova Perkins, 2011 Hydraena bicolorata Jäch, 1997 Hydraena bicuspidata Ganglbauer, 1901 Hydraena bidefensa Perkins, 2007 Hydraena bifunda Perkins, 2011 Hydraena bihamata Champion, 1920 Hydraena biimpressa Perkins, 2007 Hydraena billi Zwick, 1977 溪头细牙虫 Hydraena bilobata Jäch & Díaz, 1998 Hydraena biltoni Jäch & Díaz, 2012 Hydraena bimagua Jäch, 1986 Hydraena birendra Skale & Jäch, 2009 Hydraena biseptosa Perkins, 2014 Hydraena bisinuata Perkins, 2017 Hydraena bisinuloba Perkins, 2017 Hydraena bispica Perkins, 2017 Hydraena bispinosa Pu & Zhe-Long, 1951 Hydraena bisulcata Rey, 1884 Hydraena bitruncata Orchymont, 1934 Hydraena bituberculata Perkins, 1980 Hydraena biundulata Perkins, 2011 Hydraena blackburni Zaitzev, 1908 Hydraena blancae Deler-Hernández, Fikáček & Delgado, 2017 Hydraena bodemeyeri Jäch & Díaz, 2001 Hydraena boetcheri Orchymont, 1932 Hydraena bolivari Orchymont, 1936 Hydraena boliviana Perkins, 2011 Hydraena bononiensis Binaghi, 1960 Hydraena (Hydraena) bononiensis Chiesa, 1958 Hydraena borbonica Fairmaire, 1898 Hydraena bosnica Apfelbeck, 1909 Hydraena brachymera Orchymont, 1936 Hydraena bractea Perkins, 1980 Hydraena bractoides Perkins, 1980 Hydraena brahman Perkins, 2011 Hydraena brahmin Perkins, 2011 Hydraena breedlovei Perkins, 1980 Hydraena breviceps Perkins, 2017 Hydraena brevis Sharp, 1882 Hydraena britteni Joy, 1907 Hydraena brittoni Zwick, 1977 Hydraena bromleyae Jäch, 1986 Hydraena browni Perkins, 1980 Hydraena bubi Hernando & Ribera, 2017 Hydraena bubulla Perkins, 2011 Hydraena bucollis Perkins, 2017 Hydraena bulgarica Breit, 1916 Hydraena buloba Perkins, 2011 Hydraena buquintana Perkins, 2011 Hydraena buschietanni Freitag & Hornyák, 2021 Hydraena buscintilla Perkins, 2011 Hydraena busuanga Freitag & Jäch, 2007 Hydraena (Hydraena) calcarifera E.Janssens, 1959 加州细牙虫 Hydraena californica Perkins, 1980 Hydraena cameroancylis Perkins, 2022 Hydraena cameroarida Perkins, 2022 Hydraena camerobuloba Perkins, 2022 Hydraena camerocameola Perkins, 2022 Hydraena camerocarinata Perkins, 2022 Hydraena cameroclandestina Perkins, 2022 Hydraena camerocompacta Perkins, 2022 Hydraena camerocomplexa Perkins, 2022 Hydraena camerocompressa Perkins, 2022 Hydraena cameroconcava Perkins, 2022 Hydraena cameroconfinis Perkins, 2022 Hydraena camerocontinua Perkins, 2022 Hydraena camerocontrasta Perkins, 2022 Hydraena cameroconvexa Perkins, 2022 Hydraena camerocordata Perkins, 2022 Hydraena camerocorona Perkins, 2022 Hydraena camerocrebrata Perkins, 2022 Hydraena camerocubita Perkins, 2022 Hydraena camerocurvata Perkins, 2022 Hydraena camerodidacta Perkins, 2022 Hydraena camerodigita Perkins, 2022 Hydraena cameroflagellata Perkins, 2022 Hydraena camerofoveata Perkins, 2022 Hydraena camerojocula Perkins, 2022 Hydraena camerolatula Perkins, 2022 Hydraena cameroovala Perkins, 2022 Hydraena cameropalmula Perkins, 2022 Hydraena cameropetila Perkins, 2022 Hydraena cameroradiata Perkins, 2022 Hydraena camerosemicordata Perkins, 2022 Hydraena camerosetosa Perkins, 2022 Hydraena camerosicula Perkins, 2022 Hydraena campbelli Perkins, 1980 Hydraena (Hydraena) canakcioglui E.Janssens, 1965 Hydraena canticacollis Perkins, 1980 Hydraena capacis Perkins, 2007 Hydraena capensis Perkins, 2014 Hydraena capetribensis Perkins, 2007 Hydraena cappadocica Jäch, 1988 Hydraena caprivica Perkins, 2014 Hydraena capta Orchymont, 1936 Hydraena carbonaria Kiesenwetter, 1849 Hydraena carica Jäch, 1988 Hydraena carinocisiva Perkins, 2011 Hydraena carinulata Rey, 1885 Hydraena carmellita Perkins, 2011 Hydraena carniolica Pretner, 1970 Hydraena casacolumna Perkins, 2017 Hydraena castanea Deane, 1937 Hydraena castanescens Freitag & Jäch, 2007 Hydraena (Hydraena) cata Orchymont, 1943 Hydraena catalonica Fresneda, Aguilera & Hernando, 1994 Hydraena catherinae Bameul & Jäch, 2001 Hydraena caucasica Kuwert, 1888 Hydraena cavifrons Perkins, 2011 Hydraena cephalleniaca Jäch, 1985 Hydraena cervisophila Jäch, 1992 Hydraena challeti Perkins, 2011 Hydraena cheesmanae Perkins, 2011 Hydraena chenae Pu & Zhe-Long, 1951 Hydraena chersonesica Jäch, Díaz & Przewoźny, 2007 Hydraena cherylbarrae Perkins, 2011 Hydraena chiapa Perkins, 1980 Hydraena (Hydraena) chiesai E.Janssens, 1965 Hydraena chifengi Jäch & Díaz, 1999 Hydraena chobauti Guillebeau, 1896 Hydraena christinae Audisio, De Biase & Jäch, 1996 Hydraena christoferi Jäch & Díaz, 2005 Hydraena ciliciensis Jäch, 1988 Hydraena circulata Perkins, 1980 Hydraena cirrata Champion, 1920 Hydraena (Hydraena) cirratoides E.Janssens, 1980 Hydraena clarinis Perkins, 2011 Hydraena claudia Freitag & Jäch, 2007 Hydraena clavicula Perkins, 2014 Hydraena clavigera Zwick, 1977 Hydraena clavulata Perkins, 2017 Hydraena clemens Jäch & Díaz, 2006 Hydraena clinodorsa Perkins, 2011 Hydraena clystera Perkins, 2011 Hydraena cochabamba Perkins, 2011 Hydraena (Hydraena) colchica E.Janssens, 1963 Hydraena colombiana Perkins, 1980 Hydraena colorata Perkins, 2011 Hydraena colymba Perkins, 1980 Hydraena compacta Perkins, 2017 伏毛细牙虫 Hydraena compressipilis Jäch & Díaz, 1998 Hydraena concepcionica Perkins, 2011 Hydraena concinna Orchymont, 1932 Hydraena confluenta Perkins, 2011 Hydraena confusa Pu & Zhe-Long, 1951 Hydraena connexa Orchymont, 1932 Hydraena contorta Perkins, 2017 Hydraena contracolorata Perkins, 2017 Hydraena converga Perkins, 2007 Hydraena coomani Orchymont, 1932 Hydraena coopei Angus, 1997 Hydraena cooperi J.Balfour-Browne, 1954 Hydraena cooperoides Perkins, 2014 Hydraena copulata Perkins, 2011 Hydraena (Hydraena) cordata L.W.Schaufuss, 1883 Hydraena cordiformis Jäch & Díaz, 2000 Hydraena cordispina Perkins, 2011 Hydraena corinna Orchymont, 1936 Hydraena cornelli Jäch & Díaz, 1998 Hydraena corrugis Orchymont, 1934 Hydraena coryleti Jäch, 1992 Hydraena costiniceps Perkins, 1980 Hydraena crepidoptera Jäch, 1992 Hydraena cristatigena Jäch & Díaz, 2000 Hydraena croatica Kuwert, 1888 Hydraena cryptostoma Jäch, 1992 Hydraena crystallina Perkins, 1980 Hydraena cubista Perkins, 2007 Hydraena cultrata Perkins, 2007 Hydraena cunicula Perkins, 2011 Hydraena cunninghamensis Perkins, 2007 Hydraena curta Kiesenwetter, 1849 卵身细牙虫 Hydraena curtipalpis Jäch & Díaz, 1998 Hydraena curvipes Jäch & Díaz, 2012 Hydraena curvosa Perkins, 2011 Hydraena cuspidicollis Perkins, 1980 Hydraena cyclops Jäch & Díaz, 2000 Hydraena cygnus Zwick, 1977 Hydraena (Hydraena) czernohorskyi J.Müller, 1911 Hydraena d-concava Perkins, 2011 Hydraena d-destina Perkins, 1980 Hydraena dalmatina Ganglbauer, 1901 Hydraena damascena Pic, 1910 Hydraena dariensis Perkins, 2011 Hydraena darwini Perkins, 2007 Hydraena debeckeri (E.Janssens, 1972) Hydraena decepta Perkins, 2011 Hydraena decipiens Zwick, 1977 Hydraena decolor Sainte-Claire Deville, 1903 Hydraena decui Spangler, 1980 Hydraena (Hydraena) delia J.Balfour-Browne, 1979 Hydraena deliquesca Perkins, 2007 Hydraena delvasi Delgado & Collantes, 1996 Hydraena densa Fauvel, 1883 Hydraena dentipalpis Reitter, 1888 Hydraena dentipes Germar, 1842 Hydraena devillei Ganglbauer, 1901 Hydraena devincta Orchymont, 1940 Hydraena diadema Perkins, 2011 Hydraena diazi Trizzino, Jäch & Ribera, 2011 Hydraena diffusa Perkins, 2011 Hydraena dilutipes Fairmaire, 1898 Hydraena dilutipoides Perkins, 2017 Hydraena dimorpha Orchymont, 1922 Hydraena (Hydraena) dinarica Freitag & Vries, 2021 Hydraena dinosaurophila Jäch, 1994 Hydraena discicollis Fairmaire, 1898 Hydraena discreta Ganglbauer, 1904 Hydraena disparamera Perkins, 2007 Hydraena divisa Perkins, 2017 Hydraena dochula Skale & Jäch, 2009 Hydraena (Hydraena) dolichogaster E.Janssens, 1965 Hydraena dorrigoensis Perkins, 2007 Hydraena draconisaurati Jäch & Díaz, 2005 Hydraena dudgeoni Perkins, 2011 Hydraena duodecimata Perkins, 2014 Hydraena duohamata Perkins, 2011 Hydraena ebriimadli Jäch, 1988 Hydraena ecuadormica Perkins, 2011 Hydraena egoni Jäch, 1986 Hydraena eichleri Orchymont, 1937 Hydraena einsteini Perkins, 2011 Hydraena elementaria Perkins, 2017 Hydraena elephanta Perkins, 2014 Hydraena elisabethae Jäch, 1992 Hydraena eliya Jäch, 1982 Hydraena emarginata Rey, 1885 Hydraena (Hydraena) emineae Jäch & Kasapoğlu, 2006 Hydraena epeirosi Ferro, 1985 Hydraena epipleurata Perkins, 2017 Hydraena errina Orchymont, 1948 Hydraena erythraea Régimbart, 1905 Hydraena eryx Orchymont, 1948 Hydraena esquinita Brojer & Jäch, 2011 Hydraena essentia Perkins, 2011 Hydraena (Hydraena) euboia Jäch & Díaz, 2016 Hydraena (Hydraena) eucnemis E.Janssens, 1971 Hydraena evanescens Rey, 1884 Hydraena evansi J.Balfour-Browne, 1945 Hydraena exarata Kiesenwetter, 1866 Hydraena exasperata Orchymont, 1935 Hydraena excisa Kiesenwetter, 1849 Hydraena exhalista Perkins, 2011 Hydraena exilipes Perkins, 1980 Hydraena expedita Skale & Jäch, 2009 Hydraena explanata Pic, 1905 Hydraena extorris Zwick, 1977 Hydraena falcata Jäch, 1992 Hydraena farsensis Skale & Jäch, 2011 Hydraena fasciata Perkins, 2011 Hydraena fascinata Perkins, 2011 Hydraena fasciola Perkins, 2011 Hydraena fasciolata Perkins, 2011 Hydraena fasciopaca Perkins, 2011 Hydraena favulosa Perkins, 2014 Hydraena fenestella Perkins, 2011 Hydraena ferethula Perkins, 2007 Hydraena feryi Skale & Jäch, 2011 Hydraena feuerborni Orchymont, 1932 斐济细牙虫 Hydraena fijiensis J.Balfour-Browne, 1945 Hydraena (Hydraena) filum J.Sahlberg, 1908 Hydraena finita Orchymont, 1943 Hydraena finki Skale & Jäch, 2009 Hydraena finniganensis Perkins, 2007 Hydraena fiorii Porta, 1899 Hydraena fischeri Schönmann, 1991 Hydraena flagella Perkins, 2011 Hydraena fluvicola (Perkins, 1980) Hydraena foliobba Perkins, 2011 Hydraena fontana Orchymont, 1932 Hydraena fontiscarsavii (Jäch, 1988) Hydraena formosapala Perkins, 2011 Hydraena formosopala Perkins, 2011 Hydraena formula Orchymont, 1932 Hydraena forticollis Perkins, 2007 Hydraena fortipes Perkins, 2017 Hydraena fosterorum Trizzino, Jäch & Ribera, 2011 Hydraena franklyni Deler-Hernández & Delgado, 2012 Hydraena freitagi Skale & Jäch, 2009 Hydraena frenzeli Skale & Jäch, 2008 Hydraena fritzi Jäch, 1992 Hydraena frondsicola (Perkins, 1980) Hydraena fulgidicollis Perkins, 2017 Hydraena funda Perkins, 2011 Hydraena fundacta Perkins, 2011 Hydraena fundaequalis Perkins, 2007 Hydraena fundapta Perkins, 2011 Hydraena fundarca Perkins, 2011 Hydraena fundata Perkins, 2007 Hydraena fundextra Perkins, 2011 Hydraena furcula Perkins, 2017 Hydraena furthi Jäch, 1982 Hydraena gaditana Lagar & Fresneda, 1990 Hydraena (Hydraena) galatica E.Janssens, 1971 Hydraena galea Perkins, 2011 Hydraena (Hydraena) gattolliati Jäch & Delgado, 2010 Hydraena gavarrensis Jäch, Díaz & Martinoy, 2005 Hydraena geminya Perkins, 1980 Hydraena genumorpha Perkins, 2014 Hydraena genuvela Perkins, 2017 Hydraena georgiadesi Orchymont, 1931 Hydraena geraldneuhauseri Jäch & Díaz, 2006 Hydraena gereckei Perkins, 2017 Hydraena germaini Orchymont, 1923 Hydraena glassmani Jäch, 1986 Hydraena gnatella Orchymont, 1945 Hydraena gnatelloides Orchymont, 1945 Hydraena goldschmidti Perkins, 2017 Hydraena gracilidelphis Trizzino, Valladares, Garrido & Audisio, 2012 Hydraena gracilis Germar, 1823 Hydraena graciloides (Jäch, 1988) Hydraena grandis Reitter, 1885 Hydraena graphica Orchymont, 1931 Hydraena grata Orchymont, 1944 Hydraena grebennikovi Hernando & Ribera, 2017 Hydraena gregalis Orchymont, 1944 Hydraena gressa Orchymont, 1944 Hydraena griphus Orchymont, 1944 Hydraena grouvellei Orchymont, 1923 Hydraena grueberi Skale & Jäch, 2009 Hydraena guadelupensis Orchymont, 1923 广西细牙虫 Hydraena guangxiensis Jäch & Díaz, 2005 Hydraena guatemala Perkins, 1980 Hydraena guentheri Jäch, 1992 Hydraena guilin Jäch & Díaz, 2005 Hydraena gynaephila Jäch, 1997 Hydraena habitiva Perkins, 2014 Hydraena hainzi Jäch, 1988 Hydraena haitensis Perkins, 1980 Hydraena hajeki Skale & Jäch, 2011 Hydraena hamifera Zwick, 1977 Hydraena hansreuteri Jäch & Díaz, 2005 Hydraena hayashii Jäch & Díaz, 2012 Hydraena helena Orchymont, 1929 Hydraena hendrichi Jäch, Díaz & Skale, 2013 Hydraena (Hydraena) hera Jäch & Díaz, 2016 Hydraena hernandoi Fresneda & Lagar, 1990 Hydraena herzogestella Perkins, 2011 Hydraena heterogyna Bedel, 1898 Hydraena hiekei Jäch, 1992 Hydraena hillaryi Skale & Jäch, 2009 Hydraena hintoni Perkins, 2011 Hydraena hinundungan Vidal, Camille.Go & Freitag, 2017 Hydraena hispanica Ganglbauer, 1901 Hydraena holdhausi Pretner, 1929 Hydraena hornabrooki Perkins, 2011 Hydraena hortensis Jäch & Díaz, 2000 Hydraena hosiwergi Freitag & Jäch, 2007 Hydraena hosseinieorum Bilton & Jäch, 1998 黄山细牙虫 Hydraena huangshanensis Jäch & Díaz, 2005 Hydraena huitongensis Jäch & Díaz, 2005 Hydraena humanica Perkins, 2014 湖南细牙虫 Hydraena hunanensis Pu & Zhe-Long, 1951 Hydraena hungarica Rey, 1884 Hydraena huonica Perkins, 2011 Hydraena hyalina Perkins, 1980 Hydraena hynesi Zwick, 1977 Hydraena hypipamee Perkins, 2007 Hydraena ibalimi Perkins, 2011 Hydraena iberica Orchymont, 1936 Hydraena idema Perkins, 2011 Hydraena iheya Jäch & Díaz, 1999 Hydraena ilamensis Skale & Jäch, 2009 Hydraena ilica Jäch, 1994 Hydraena imbria Jäch & Díaz, 2001 Hydraena impala Perkins, 2011 Hydraena (Hydraena) imperatrix Knisch Hydraena imperatrix Kniz, 1919 Hydraena impercepta Zwick, 1977 Hydraena impressicollis Fairmaire, 1898 Hydraena inancala Perkins, 2007 Hydraena inapicipalpis Pic, 1918 Hydraena incisiva Perkins, 2011 Hydraena incista Perkins, 2011 Hydraena incurva Orchymont, 1932 Hydraena indiana Jäch, 1994 印度细牙虫 Hydraena indica Orchymont, 1920 Hydraena infoveola Perkins, 2011 Hydraena ingens (Perkins, 1980) Hydraena inhalista Perkins, 2011 Hydraena injectiva Perkins, 2014 Hydraena innuda Perkins, 2007 长身细牙虫 Hydraena inopilata Jach & Diaz, 1998 Hydraena inopinata Jäch & Díaz, 1998 Hydraena inplacopaca Perkins, 2011 Hydraena insandalia Perkins, 2011 Hydraena inseriata Perkins, 2017 Hydraena insita Orchymont, 1932 Hydraena insolita Orchymont, 1932 Hydraena insularis Orchymont, 1945 Hydraena integra Pretner, 1931 Hydraena intensa Perkins, 2011 Hydraena intermedia Rosenhauer, 1847 Hydraena intraangulata Perkins, 2007 Hydraena inusta Orchymont, 1932 Hydraena invicta Perkins, 2007 Hydraena iriomotensis Jäch & Díaz, 1999 Hydraena isabelae Castro & Herrera, 2001 南台细牙虫 Hydraena isolinae Jäch & Díaz, 1998 Hydraena (Hydraena) ispirensis Kasapoğlu, Jäch & Skale, 2010 Hydraena iterata Orchymont, 1948 Hydraena jacobsoni Orchymont, 1932 Hydraena jaechiana (Audisio & De Biase, 1990) Hydraena jaegeri Skale & Jäch, 2009 Hydraena jailensis Breit, 1917 Hydraena janczyki Jäch, 1992 Hydraena janeceki Jäch, 1987 Hydraena janssensi M.Hansen, 1998 Hydraena janssensi Nilsson, 2001 郑氏细牙虫 Hydraena jengi Jäch & Díaz, 1998 Hydraena jilanzhui Jäch & Díaz, 2005 Hydraena jivaro Perkins, 1980 Hydraena johncoltranei Perkins, 2011 Hydraena jojoorculloi Freitag & Jäch, 2007 Hydraena josefinae Benetti, Valladares, Delgado & Hamada, 2020 Hydraena jubata Perkins, 2017 Hydraena jubilata Perkins, 2011 Hydraena kadowakii Jäch & Díaz, 2012 Hydraena (Hydraena) kahleni Jäch & Díaz, 2017 Hydraena kakadu Perkins, 2007 Hydraena kamitei Jäch & Díaz, 2012 Hydraena karinkukolae Jäch, 1989 Hydraena karmai Skale & Jäch, 2009 Hydraena kasyi Jäch, 1992 Hydraena kaufmanni Ganglbauer, 1901 Hydraena kellymilleri Perkins, 2011 Hydraena (Hydraena) khnzoriani E.Janssens, 1968 Hydraena kilimandjarensis Régimbart, 1906 Hydraena kitayamai Jäch & Díaz, 2012 Hydraena knischi Orchymont, 1928 Hydraena kocheri Berthélemy, 1992 Hydraena kodadai Freitag & Jäch, 2007 Hydraena koje Perkins, 2011 Hydraena koma Perkins, 2011 Hydraena krasnodarensis Jäch & Díaz, 2006 Hydraena kroumiriana Kaddouri, 1992 Hydraena (Hydraena) kucinici Mičetić Stanković & Jäch, 2012 Hydraena kuehnelti Jäch, 1989 Hydraena kurdistanica Jäch, 1988 广西细牙虫 Hydraena kwangsiensis Pu & Zhe-Long, 1951 Hydraena labropaca Perkins, 2011 Hydraena lagamba Brojer & Jäch, 2011 Hydraena lapidicola Kiesenwetter, 1849 Hydraena lapissectilis Jäch, 1992 Hydraena larissae Jäch & Díaz, 2000 拉森细牙虫 Hydraena larsoni Perkins, 2007 Hydraena lascrucensis Brojer & Jäch, 2011 Hydraena lassulipes Perkins, 2011 Hydraena latebricola Jäch, 1986 Hydraena latisoror Perkins, 2007 Hydraena (Hydraena) lazica E.Janssens, 1963 Hydraena leechi Perkins, 1980 李氏细牙虫 Hydraena leei Jäch & Díaz, 1998 Hydraena legorskyi Jäch & Brojer, 2012 Hydraena lehmanni Jäch & Díaz, 2005 Hydraena leonhardi Breit, 1916 Hydraena leprieuri Sainte-Claire Deville, 1905 Hydraena (Hydraena) levantina J.Sahlberg, 1908 Hydraena levifurcata Perkins, 2017 Hydraena ligulipes Jäch, 1988 Hydraena lilianae Perkins, 2011 Hydraena limbobesa Perkins, 2011 Hydraena limpidicollis Perkins, 1980 Hydraena liriope Orchymont, 1943 Hydraena longicollis Sharp, 1882 Hydraena longiloba Perkins, 2017 Hydraena loripes Perkins, 2011 Hydraena lotti Bilton, 2013 Hydraena lubrica Perkins, 2017 Hydraena lucasi Lagar, 1984 Hydraena lucernae Zwick, 1977 Hydraena ludovicae Orchymont, 1931 Hydraena luminicollis Perkins, 2007 Hydraena luridipennis W.J.MacLeay, 1871 Hydraena lusitana (Berthélemy, 1977) Hydraena lycia Jäch, 1988 Hydraena macedonica Orchymont, 1931 Hydraena maculicollis Champion, 1920 Hydraena maculopala Perkins, 2011 Hydraena madronensis Castro, García & Ferreras, 2000 Hydraena magna Pu & Zhe-Long, 1951 Hydraena magnessa Jäch, 1997 Hydraena magnetica Zwick, 1977 Hydraena mahavavona Perkins, 2017 Hydraena mahensis Scott, 1913 Hydraena malagricola Jäch & Díaz, 2012 Hydraena malickyi Jäch, 1989 Hydraena malkini Perkins, 1980 Hydraena manabica Perkins, 2011 Hydraena manaslu Skale & Jäch, 2009 Hydraena manfredjaechi Delgado & Soler, 1991 Hydraena manguao Freitag & Jäch, 2007 Hydraena manjakatompo Perkins, 2017 Hydraena manulea Perkins, 2011 Hydraena manuloides Perkins, 2011 Hydraena marawaka Perkins, 2011 Hydraena marcosae Aguilera, Hernando & Ribera, 1997 Hydraena marginicollis Kiesenwetter, 1849 Hydraena mariannae Jäch, 1992 Hydraena marinae Castro, 2003 Hydraena maroccana Kaddouri, 1992 Hydraena marojejy Perkins, 2017 Hydraena martensi Skale & Jäch, 2009 Hydraena martinschoepfi Jäch & Díaz, 2005 Hydraena maryae Jäch & Delgado, 2016 Hydraena masatakai Jäch & Díaz, 2003 Hydraena matthiasi Deler-Hernández, Fikáček & Delgado, 2017 Hydraena matyoti Jäch & Delgado, 2016 Hydraena maureenae Perkins, 1980 Hydraena mauriciogarciai Perkins, 2011 Hydraena mazamitla Perkins, 1980 Hydraena mecai Millán & Aguilera, 2000 Hydraena melas Dalla Torre, 1877 Hydraena mercuriala Perkins, 2011 Hydraena meschniggi Pretner, 1929 Hydraena metzeni Perkins, 2007 墨西哥细牙虫 Hydraena mexicana Perkins, 1980 Hydraena mianminica Perkins, 2011 Hydraena michaelbalkei Jäch, Díaz & Skale, 2013 Hydraena mignymixys Perkins, 1980 Hydraena millenaria Perkins, 2022 Hydraena millerorum Perkins, 2007 Hydraena miniretia Perkins, 2007 Hydraena mintrita Perkins, 2011 Hydraena minutissima Stephens, 1829 Hydraena mitchellensis Perkins, 2007 Hydraena miyatakei Satô, 1959 Hydraena modili Jäch, 1988 Hydraena monikae Jäch & Díaz, 2000 Hydraena monscassius Jäch, 1988 Hydraena monstruosipes Ferro, 1986 Hydraena monteithi Perkins, 2007 Hydraena morio Kiesenwetter, 1849 Hydraena motzfeldi Skale & Jäch, 2011 Hydraena mouzaiensis Sainte-Claire Deville, 1909 Hydraena mpumalanga Perkins, 2014 Hydraena muelleri Pretner, 1931 Hydraena muezziginea Jäch, 1988 Hydraena multiarcuata Perkins, 2017 Hydraena multiloba Perkins, 2011 Hydraena multimurata Perkins, 2014 Hydraena multispina Perkins, 2011 Hydraena mylasae Jäch, 1992 Hydraena (Hydraena) naja Ribera, Hernando & Cieslak, 2019 Hydraena (Hydraena) namiae Jäch & Díaz, 2016 纳米比亚细牙虫 Hydraena namibiensis Perkins, 2014 Hydraena nanocolorata Perkins, 2011 Hydraena nanopala Perkins, 2011 Hydraena nanoscintilla Perkins, 2011 Hydraena nanula Perkins, 2017 Hydraena natiforma Perkins, 2014 Hydraena neblina Perkins, 2011 Hydraena needhami Orchymont, 1929 Hydraena neoaccurata Perkins, 2014 Hydraena nevermanni Perkins, 1980 Hydraena newtoni Perkins, 1980 Hydraena nielshaggei Freitag & Jäch, 2007 Hydraena nigra Hatch, 1965 Hydraena nigrita Germar, 1823 Hydraena nike Jäch, 1995 Hydraena nilguenae (Jäch, 1988) Hydraena nitidimenta Perkins, 2011 Hydraena nivalis Jäch, 1992 Hydraena nomenipes Perkins, 2014 Hydraena notsui Satô, 1978 Hydraena novacula Perkins, 2011 Hydraena numidica Sainte-Claire Deville, 1905 Hydraena nurabadensis Skale & Jäch, 2011 Hydraena nuratauensis Jäch, 1994 Hydraena oaxaca Perkins, 1980 Hydraena (Hydraena) obaei M.Hayashi & Yoshitomi, 2020 Hydraena oblio Perkins, 1980 Hydraena occidentalis Perkins, 1980 Hydraena occitana (Audisio & De Biase, 1995) Hydraena ofella J.Balfour-Browne, 1958 Hydraena okapa Perkins, 2011 冲绳细牙虫 Hydraena okinawensis Jäch & Díaz, 1999 Hydraena olidipastoris Jäch, 1988 Hydraena ollopa Perkins, 2011 Hydraena optica Jäch & Díaz, 2012 Hydraena orchid Jach & Diaz, 1998 Hydraena orchis Jäch & Díaz, 1998 Hydraena orchisa Perkins, 2017 Hydraena orcula Perkins, 1980 Hydraena ordishi Delgado & Palma, 1997 Hydraena orientalis Breit, 1916 Hydraena ortali Jäch, 1986 Hydraena (Hydraena) orthosia Jäch, Dia & Díaz, 2006 Hydraena oscillata Perkins, 2017 Hydraena otiarca Perkins, 2011 Hydraena (Hydraena) ovata E.Janssens, 1961 Hydraena owenobesa Perkins, 2011 Hydraena (Hydraena) oxiana E.Janssens, 1974 Hydraena ozarkensis Perkins, 1980 Hydraena pachyptera Apfelbeck, 1909 Hydraena pacifica Perkins, 1980 Hydraena pacificica Perkins, 2011 Hydraena paeminosa Perkins, 1980 Hydraena pagaluensis Hernando & Ribera, 2001 Hydraena paganettii Ganglbauer, 1901 Hydraena pajarita Brojer & Jäch, 2011 Hydraena pakistanica Jäch, 1992 Hydraena pala Perkins, 2011 Hydraena palamita Perkins, 2011 巴拉望细牙虫 Hydraena palawanensis Freitag & Jäch, 2007 Hydraena pallidula Sainte-Claire Deville, 1909 Hydraena palustris Erichson, 1837 Hydraena pamirica Jäch, 1992 Hydraena pamphylia Jäch & Díaz, 2001 Hydraena pangaei Jäch, 1992 Hydraena pantanalensis Perkins, 2011 巴拉圭细牙虫 Hydraena paraguayensis E.Janssens, 1972 Hydraena parciplumea Perkins, 2007 Hydraena particeps Perkins, 1980 Hydraena parva Zwick, 1977 Hydraena parvipalpis Perkins, 2017 Hydraena parvispinosa Perkins, 2017 Hydraena (Hydraena) parysatis E.Janssens, 1981 Hydraena paucistriata Jäch & Díaz, 2000 Hydraena paulmoritz Jäch, Díaz & Skale, 2013 Hydraena pavicula Perkins, 1980 Hydraena paxillipes Perkins, 2011 Hydraena peckorum Perkins, 2011 Hydraena pectenata Perkins, 2011 Hydraena pedroaguilerai Perkins, 2011 Hydraena pegopyga Perkins, 2011 Hydraena pelops Jäch, 1995 Hydraena pensylvanica Kiesenwetter, 1849 Hydraena pentarubra Perkins, 2017 Hydraena penultimata Perkins, 2011 Hydraena perkinsi Spangler, 1980 Hydraena perlonga J.Balfour-Browne, 1950 Hydraena pernambucana Benetti, Valladares, Delgado & Hamada, 2020 Hydraena perpunctata Perkins, 2011 Hydraena perpusilla Freitag & Hornyák, 2021 Hydraena (Hydraena) persica E.Janssens, 1981 Hydraena pertransversa Perkins, 2011 Hydraena peru Perkins, 1980 Hydraena pesici Skale & Jäch, 2011 Hydraena petila Perkins, 1980 Hydraena phainops Perkins, 2011 Hydraena phallerata Orchymont, 1944 Hydraena phallica Orchymont, 1930 Hydraena phassilyi Orchymont, 1931 Hydraena philippi Jäch & Díaz, 2005 Hydraena philyra Orchymont, 1944 Hydraena (Hydraena) phoenicia Jäch, Dia & Díaz, 2006 Hydraena photogenica Perkins, 2011 Hydraena pici Sainte-Claire Deville, 1905 Hydraena picula Perkins, 2011 Hydraena pilimera Brojer & Jäch, 2011 Hydraena pilipes Zwick, 1977 Hydraena pilobova Perkins, 2017 Hydraena pilotumida Perkins, 2017 Hydraena pilulambra Perkins, 2011 Hydraena (Hydraena) pindica E.Janssens, 1965 Hydraena pisciforma Perkins, 2014 Hydraena planata Kiesenwetter, 1849 Hydraena plastica Orchymont, 1943 Hydraena platycnemis Jäch, 1988 Hydraena platynaspis Jäch, 1988 Hydraena (Hydraena) platysoma E.Janssens, 1968 Hydraena plaumanni Orchymont, 1937 Hydraena plumipes Rey, 1885 Hydraena pluralticola Perkins, 2011 多叉细牙虫 Hydraena plurifurcata Jäch & Díaz, 1998 Hydraena polita Kiesenwetter, 1849 Hydraena pontequula Perkins, 1980 Hydraena (Hydraena) pontica E.Janssens, 1963 Hydraena porchi Perkins, 2007 微刻细牙虫 Hydraena porcula Jäch & Díaz, 1998 Hydraena praetermissa Jäch, 1987 Hydraena premordica Perkins, 1980 Hydraena pretneri Chiesa, 1927 Hydraena prieto Perkins, 1980 Hydraena princeps Fauvel, 1903 Hydraena processa Perkins, 2011 Hydraena producta Mulsant & Rey, 1852 Hydraena proesei Skale & Jäch, 2011 Hydraena profunda Perkins, 2014 Hydraena prokini Jäch & Díaz, 2006 Hydraena propria Perkins, 2011 Hydraena prusensis Jäch, 1992 Hydraena pseudocirrata Skale & Jäch, 2009 伪巴拉望细牙虫 Hydraena pseudopalawanensis Freitag & Jäch, 2007 Hydraena pseudoriparia Orchymont, 1945 Hydraena puetzi Jäch, 1994 Hydraena pugillista Perkins, 2007 Hydraena pulchella Germar, 1823 Hydraena pulsatrix Perkins, 1980 Hydraena punctata J.L.LeConte, 1855 Hydraena puncticollis Sharp, 1882 Hydraena punctilata Perkins, 2011 Hydraena putearius Jäch & Díaz, 2000 Hydraena pygmaea G.R.Waterhouse, 1833 Hydraena quadricollis Wollaston, 1864 Hydraena quadricurvipes Perkins, 1980 Hydraena quadriplumipes Perkins, 2011 Hydraena quatriloba Perkins, 2017 Hydraena quechua Perkins, 1980 Hydraena queenslandica Perkins, 2007 Hydraena quetiae Castro, 2000 Hydraena quilisi Lagar, Fresneda & Hernando, 1987 Hydraena quintana Perkins, 2011 Hydraena quirao Vidal, Camille.Go & Freitag, 2017 Hydraena ramuensis Perkins, 2011 Hydraena ramuquintana Perkins, 2011 Hydraena ranarilalatianai Perkins, 2017 Hydraena randriamihajai Perkins, 2017 Hydraena ranomafana Perkins, 2017 Hydraena ravoandrina Perkins, 2017 Hydraena receptiva Perkins, 2011 Hydraena reflectiva Perkins, 2014 Hydraena regimbarti Zaitzev, 1908 Hydraena reidiana Lesne, 1920 Hydraena remulipes Perkins, 2011 Hydraena renalisa Perkins, 2017 Hydraena reticulata Zwick, 1977 Hydraena reticulobesa Perkins, 2011 Hydraena reticuloides Perkins, 2007 Hydraena reticulositis Perkins, 2007 Hydraena revelovela Perkins, 2007 Hydraena reverberata Perkins, 2011 Hydraena reyi Kuwert, 1888 Hydraena rhinoceros (E.Janssens, 1972) Hydraena rhodia Jäch, 1985 Hydraena riberai Jäch, Aguilera & Hernando, 1998 Hydraena richardimbi Jäch, 1992 Hydraena rigua Orchymont, 1931 Hydraena ripaeaureae E.Janssens, 1972 Hydraena riparia Kugelann, 1794 Hydraena rivularis Guillebeau, 1896 Hydraena robusta Zwick, 1977 Hydraena rosannae Audisio, Trizzino & De Biase, 2009 Hydraena rubridentata Perkins, 2017 Hydraena rubrifurcata Perkins, 2017 Hydraena rudallensis Blackburn, 1896 Hydraena rufipennis Boscá Berga, 1932 Hydraena rufipes Curtis, 1830 Hydraena rugosa Mulsant, 1844 Hydraena ruinosa Zwick, 1977 Hydraena (Hydraena) rukiyeae Kasapoğlu, Jäch & Skale, 2010 Hydraena sabella Perkins, 1980 Hydraena saga Orchymont, 1930 Hydraena sagatai Perkins, 2011 Hydraena sahlbergi Orchymont, 1923 Hydraena saluta Perkins, 2011 Hydraena samia Jäch, 1986 Hydraena samnitica Fiori, 1904 Hydraena samnitica Knisch, 1924 Hydraena sanagergelyae Brojer & Jäch, 2011 Hydraena sanfilippoi (Audisio & De Biase, 1995) Hydraena sanvicentensis Vidal, Camille.Go & Freitag, 2017 Hydraena saotometerrestris Bilton, 2023 Hydraena (Hydraena) sappho E.Janssens, 1965 Hydraena sardoa Binaghi, 1961 Hydraena satoi Jäch & Díaz, 1999 Hydraena sautakei Jäch & Díaz, 1999 梭德氏细牙虫 Hydraena sauteri Orchymont, 1913 Hydraena scabra Orchymont, 1925 Hydraena scabrosa Orchymont, 1931 Hydraena schawalleri Skale & Jäch, 2009 Hydraena schilfii Jäch, 1988 Hydraena schillhammeri Jäch, 1988 Hydraena schmidi Jäch & Díaz, 2001 Hydraena schoedli Jäch, 1992 Hydraena schoenmanni Jäch, 1988 Hydraena schubertorum Jäch & Díaz, 2001 Hydraena schuelkei Jäch, 1992 Hydraena schuleri Ganglbauer, 1901 Hydraena scintilla Perkins, 1980 Hydraena scintillabella Perkins, 1980 Hydraena scintillamima Perkins, 2011 Hydraena scintillapicta Perkins, 2011 Hydraena scintillarca Perkins, 2011 Hydraena scintillutea Perkins, 1980 Hydraena scitula Orchymont, 1943 Hydraena scolops Perkins, 1980 Hydraena scopula Perkins, 1980 Hydraena sculponea Perkins, 2017 Hydraena (Hydraena) scythica E.Janssens, 1974 Hydraena sebastiani Perkins, 2014 Hydraena sepikramuensis Perkins, 2011 Hydraena septemlacuum Jäch, 1992 Hydraena serpentina Jäch, 1988 Hydraena serricollis Wollaston, 1864 Hydraena serripennis Perkins, 2017 Hydraena servilia Orchymont, 1936 Hydraena sexarcuata Perkins, 2011 Hydraena sexsuprema Perkins, 2011 Hydraena sharmai Skale & Jäch, 2009 Hydraena sharpi Rey, 1885 Hydraena shorti Perkins, 2011 Hydraena sicula Kiesenwetter, 1849 Hydraena (Hydraena) sidon Jäch, Dia & Díaz, 2006 Hydraena sierra Perkins, 1980 相似细牙虫 Hydraena similis Orchymont, 1930 Hydraena simonidea Orchymont, 1931 Hydraena simplicata Perkins, 2017 Hydraena simplicicollis Blackburn, 1896 Hydraena simplipes Zwick, 1977 新加坡细牙虫 Hydraena singaporensis Jäch, Díaz & Skale, 2013 Hydraena sinope Jäch, 1992 Hydraena sinuatipes Perkins, 2017 Hydraena (Hydraena) smyrnensis J.Sahlberg, 1908 Hydraena socius Jäch & Díaz, 1999 Hydraena solarii Pretner, 1930 Hydraena solodovnikovi Jäch & Díaz, 2006 Hydraena sordida Sharp, 1882 Hydraena spangleri Perkins, 1980 Hydraena spatula Perkins, 2011 Hydraena speciosa Orchymont, 1944 Hydraena spinipes Baudi di Selve, 1882 Hydraena spinissima Perkins, 2007 Hydraena spinobesa Perkins, 2011 Hydraena splecoma Perkins, 1980 Hydraena squalida Orchymont, 1932 Hydraena stefani Jäch & Díaz, 2005 Hydraena steineri Perkins, 2011 Hydraena stellula Perkins, 2011 Hydraena storeyi Perkins, 2007 Hydraena striolata Perkins, 2011 Hydraena stussineri Kuwert, 1888 Hydraena subacuminata Rey, 1884 Hydraena subgrandis Jäch, 1988 Hydraena subimpressa Rey, 1885 Hydraena subina Orchymont, 1944 Hydraena subinflata Orchymont, 1944 Hydraena subinoides Orchymont, 1944 Hydraena subintegra Ganglbauer, 1901 Hydraena subinura Orchymont, 1944 Hydraena subirregularis Pic, 1918 Hydraena subjuncta Orchymont, 1930 Hydraena sublamina Orchymont, 1945 Hydraena sublapsa Orchymont, 1945 Hydraena subsequens Rey, 1885 Hydraena supersexa Perkins, 2011 Hydraena supina Perkins, 2011 四川细牙虫 Hydraena szechuanensis Pu & Zhe-Long, 1951 Hydraena takin Skale & Jäch, 2009 Hydraena takutu Perkins, 2011 Hydraena tarsotricha Perkins, 2011 Hydraena tarvisina (Ferro, 1992) Hydraena tatii Sáinz-Cantero & Alba-Tercedor, 1989 Hydraena tauricola Jäch, 1988 Hydraena (Hydraena) taxila E.Janssens, 1962 Hydraena (Hydraena) tekmanensis Jäch, Skale & Kasapoğlu, 2011 Hydraena tenjikuana Satô, 1979 Hydraena tenuis (E.Janssens, 1980) Hydraena tenuisella Perkins, 2007 Hydraena tenuisoror Perkins, 2007 Hydraena terebrans Jäch, 1992 Hydraena terralta Perkins, 1980 Hydraena testacea Curtis, 1830 Hydraena tetana Perkins, 2011 Hydraena textila Perkins, 2007 Hydraena thienemanni Orchymont, 1932 Hydraena thola Perkins, 2011 Hydraena tholasoris Perkins, 2011 Hydraena thumbelina Perkins, 2011 Hydraena thumbelipes Perkins, 2011 Hydraena thyene J.Balfour-Browne, 1958 Hydraena tiara Perkins, 2014 Hydraena tibiodentipes Perkins, 2017 Hydraena tibiopaca Perkins, 2011 Hydraena tobogan Perkins, 2011 Hydraena torosopala Perkins, 2011 Hydraena torquata Perkins, 2017 Hydraena torricellica Perkins, 2011 Hydraena transvallis Perkins, 2011 Hydraena trapezoidalis Zwick, 1977 Hydraena triaequalis Perkins, 2017 Hydraena tricantha Zwick, 1977 Hydraena trichotarsa Perkins, 2011 Hydraena tricosipes Perkins, 2011 Hydraena tridigita Perkins, 2011 Hydraena tridisca Perkins, 2007 Hydraena triloba Perkins, 2007 Hydraena trinidensis Perkins, 1980 Hydraena triparamera Jäch, 1982 Hydraena tripartita Perkins, 2017 Hydraena tritropis Perkins, 2011 Hydraena tritutela Perkins, 2011 Hydraena truncata Rey, 1885 Hydraena tsushimaensis Jäch & Díaz, 2012 Hydraena tubuliphallis Jäch, 1982 Hydraena tucumanica Perkins, 1980 Hydraena tuolumne Perkins, 1980 Hydraena (Hydraena) turcica E.Janssens, 1965 Hydraena turneri Bilton, 2023 Hydraena turrialba Perkins, 1980 Hydraena tyrrhena Binaghi, 1961 Hydraena ulna Perkins, 2011 Hydraena umbolenta Perkins, 2011 Hydraena unca Valladares, 1989 Hydraena undevigintioctogintasisyphos Jäch & Díaz, 2005 粗点细牙虫 Hydraena undulata Jäch & Díaz, 1998 Hydraena uniforma Perkins, 2014 Hydraena unita Perkins, 2011 Hydraena upsilonica Perkins, 2017 Hydraena uzbekistanica Jäch, 1994 Hydraena vadosa Perkins, 2014 Hydraena valentini Jäch & Díaz, 2012 Hydraena vandykei Orchymont, 1923 Hydraena variopaca Perkins, 2011 Hydraena vedrasi Orchymont, 1931 Hydraena vela Perkins, 1980 Hydraena velvetina Perkins, 2011 Hydraena venezuela Perkins, 2011 Hydraena verberans Jäch & Díaz, 2006 Hydraena verstraeteni Ferro, 1984 Hydraena victoriae Jäch & Díaz, 1999 越南细牙虫 Hydraena vietnamensis (E.Janssens, 1972) Hydraena (Hydraena) virginalis E.Janssens, 1963 Hydraena (Hydraena) vladimiri Jäch & Díaz, 2016 Hydraena vodozi Sainte-Claire Deville, 1908 Hydraena vulgaris Jäch & Díaz, 2000 Hydraena waldheimi Jäch, 1987 汪氏细牙虫 Hydraena wangi Jäch & Díaz, 1998 Hydraena wangmiaoi Jäch & Díaz, 2005 Hydraena watanabei Jäch & Satô, 1988 Hydraena wattsi Perkins, 2007 Hydraena weigeli Skale & Jäch, 2009 Hydraena weiri Perkins, 2007 Hydraena wencke Skale & Jäch, 2009 Hydraena wewalkai Jäch, 1988 Hydraena williamsensis Deane, 1931 Hydraena wittmeri Satô, 1979 Hydraena wolfi Skale & Jäch, 2009 Hydraena wrasei Jäch, 1992 Hydraena xingu Perkins, 2011 Hydraena yangae Jäch, Díaz & Skale, 2013 Hydraena yonaguniensis Jäch, 2003 Hydraena yosemitensis Perkins, 1980 Hydraena yoshitomii Jäch & Díaz, 1999 Hydraena youngi Perkins, 1980 Hydraena ypsilon Zwick, 1977 云南细牙虫 Hydraena yunnanensis Pu & Zhe-Long, 1942 Hydraena zapatina Perkins, 1980 Hydraena zelandica Ordish, 1984 Hydraena zetteli Freitag & Jäch, 2007 Hydraena (Hydraena) zezerensis Díaz & Bilton, 1995 津巴布韦细牙虫 Hydraena zimbabwensis Perkins, 2014 Hydraena zwicki Perkins, 2007 Hydraena Kugelann, 1794. GBIF. [2024-01-21]. （原始内容存档于2022-11-06）.