Các loài trong chi này gồm:[2]

• Hydrovatus abraeoides Régimbart, 1895
• Hydrovatus absonus Guignot, 1948
• Hydrovatus acuminatus Motschulsky, 1859
• Hydrovatus agathodaemon Biström, 1997
• Hydrovatus amplicornis Régimbart, 1895
• Hydrovatus angusticornis Biström, 1997
• Hydrovatus antennatus (Peschet, 1924)
• Hydrovatus aristidis Leprieur, 1879
• Hydrovatus asemus Biström, 1997
• Hydrovatus asymmetricus Biström & Wewalka, 1994
• Hydrovatus badeni Sharp, 1882
• Hydrovatus balfourbrownei Biström, 1997
• Hydrovatus balneator Guignot, 1954
• Hydrovatus baptus Guignot, 1954
• Hydrovatus bedoanus Bruneau de Miré & Legros, 1963
• Hydrovatus bicolor Guignot, 1956
• Hydrovatus bomansi Guignot, 1955
• Hydrovatus bonvouloiri Sharp, 1882
• Hydrovatus brancuccii Biström, 1997
• Hydrovatus bredoi Gschwendtner, 1943
• Hydrovatus brevipes Sharp, 1882
• Hydrovatus brevipilis Guignot, 1942
• Hydrovatus brownei Omer-Cooper, 1955
• Hydrovatus brunneus Guignot, 1961
• Hydrovatus bullatus Guignot, 1958
• Hydrovatus capnius Guignot, 1950
• Hydrovatus caraibus Sharp, 1882
• Hydrovatus cardoni Severin, 1890
• Hydrovatus castaneus Motschulsky, 1855
• Hydrovatus cessatus Guignot, 1956
• Hydrovatus charactes Guignot, 1955
• Hydrovatus clypealis Sharp, 1876
• Hydrovatus collega Guignot, 1955
• Hydrovatus compactus Sharp, 1882
• Hydrovatus concii Bilardo & Pederzani, 1978
• Hydrovatus concolor Sharp, 1887
• Hydrovatus confertus Sharp, 1882
• Hydrovatus confossus Guignot, 1958
• Hydrovatus confusus Régimbart, 1903
• Hydrovatus contumax Guignot, 1954
• Hydrovatus coracinus Guignot, 1947
• Hydrovatus crassicornis (H.J.Kolbe, 1883)
• Hydrovatus crassulus Sharp, 1882
• Hydrovatus cribratus Sharp, 1882
• Hydrovatus cristatus Guignot, 1958
• Hydrovatus cruentatus H.J.Kolbe, 1883
• Hydrovatus cuspidatus (Kunze, 1818)
• Hydrovatus dama Guignot, 1958
• Hydrovatus davidis Young, 1956
• Hydrovatus dentatus Bilardo & Rocchi, 1990
• Hydrovatus deserticola Guignot, 1950
• Hydrovatus diabolicus Biström & Larson, 1995
• Hydrovatus difformis Régimbart, 1895
• Hydrovatus duponti Régimbart, 1895
• Hydrovatus enigmaticus Biström, 1997
• Hydrovatus eximius Biström, 1997
• Hydrovatus exochomoides Régimbart, 1895
• Hydrovatus facetus Guignot, 1942
• Hydrovatus fasciatus Sharp, 1882
• Hydrovatus felixi Biström, 1997
• Hydrovatus fernandoi Biström, 1997
• Hydrovatus ferrugineus Zimmermann, 1920
• Hydrovatus flammulatus Sharp, 1882
• Hydrovatus flebilis Guignot, 1945
• Hydrovatus fractus Sharp, 1882
• Hydrovatus frater Régimbart, 1895
• Hydrovatus fulvicollis Guignot, 1958
• Hydrovatus gabonicus Régimbart, 1895
• Hydrovatus galpini Omer-Cooper, 1957
• Hydrovatus glaber Guignot, 1953
• Hydrovatus globulosus Gschwendtner, 1943
• Hydrovatus grabowskyi Régimbart, 1899
• Hydrovatus granosus Guignot, 1958
• Hydrovatus gravis Guignot, 1954
• Hydrovatus guignoti Omer-Cooper, 1957
• Hydrovatus guignotianus Guignot, 1959
• Hydrovatus hamatus Guignot, 1950
• Hydrovatus heterogynus Zimmermann, 1926
• Hydrovatus hintoni Biström, 1997
• Hydrovatus hornii Crotch, 1873
• Hydrovatus imitator Biström, 1997
• Hydrovatus impunctatus Guignot, 1953
• Hydrovatus inexpectatus Young, 1963
• Hydrovatus insolitus Guignot, 1948
• Hydrovatus irianensis Biström, 1997
• Hydrovatus jaechi Biström, 1997
• Hydrovatus kavanaughi Biström, 1997
• Hydrovatus laosensis Biström, 1997
• Hydrovatus latipalpis Biström, 1997
• Hydrovatus leconteii (Clark, 1862)
• Hydrovatus leonardii Bilardo & Pederzani, 1978
• Hydrovatus lintrarius Guignot, 1958
• Hydrovatus longicornis Sharp, 1882
• Hydrovatus longior Biström, 1997
• Hydrovatus maai Biström, 1997
• Hydrovatus macrocephalus Gschwendtner, 1934
• Hydrovatus macrocerus Régimbart, 1895
• Hydrovatus madagascariensis Régimbart, 1903
• Hydrovatus marlieri Guignot, 1956
• Hydrovatus medialis J.Balfour-Browne, 1939
• Hydrovatus megalocerus Bilardo & Pederzani, 1978
• Hydrovatus mollis Biström, 1997
• Hydrovatus mucronatus Régimbart, 1908
• Hydrovatus mundus Omer-Cooper, 1931
• Hydrovatus naviger Biström, 1997
• Hydrovatus nefandus Omer-Cooper, 1957
• Hydrovatus nephodes Guignot, 1953
• Hydrovatus ngorekiensis Bilardo & Rocchi, 1999
• Hydrovatus niger Gschwendtner, 1938
• Hydrovatus nigricans Sharp, 1882
• Hydrovatus nigrita Sharp, 1882
• Hydrovatus nilssoni Biström, 1997
• Hydrovatus nimbaensis Guignot, 1954
• Hydrovatus niokolensis Guignot, 1956
• Hydrovatus noumeni Bilardo & Rocchi, 1990
• Hydrovatus oblongipennis Régimbart, 1895
• Hydrovatus oblongiusculus Régimbart, 1895
• Hydrovatus oblongus Omer-Cooper, 1957
• Hydrovatus obsoletus Peschet, 1922
• Hydrovatus obtusus Motschulsky, 1855
• Hydrovatus omentatus Guignot, 1950
• Hydrovatus opacus Sharp, 1882
• Hydrovatus otiosus Guignot, 1945
• Hydrovatus ovalis Sharp, 1882
• Hydrovatus parallelipennis Régimbart, 1895
• Hydrovatus parallelus Sharp, 1882
• Hydrovatus parameces Guignot, 1958
• Hydrovatus parvulus Régimbart, 1900
• Hydrovatus pederzanii Bilardo & Rocchi, 1990
• Hydrovatus peninsularis Young, 1953
• Hydrovatus perrinae Bilardo & Pederzani, 1978
• Hydrovatus perssoni Biström & Nilsson, 1997
• Hydrovatus pescheti Omer-Cooper, 1931
• Hydrovatus piceus Guignot, 1961
• Hydrovatus picipennis Motschulsky, 1859
• Hydrovatus pictulus Sharp, 1882
• Hydrovatus pilitibiis Omer-Cooper, 1957
• Hydrovatus pilula Guignot, 1954
• Hydrovatus pinguis Régimbart, 1892
• Hydrovatus pisiformis Biström, 1997
• Hydrovatus platycornis Young, 1963
• Hydrovatus postremus Guignot, 1942
• Hydrovatus pudicus (Clark, 1863)
• Hydrovatus pulcher Gschwendtner, 1934
• Hydrovatus pumilus Sharp, 1882
• Hydrovatus punctipennis Motschulsky, 1859
• Hydrovatus pustulatus (F.E.Melsheimer, 1844)
• Hydrovatus pyrrus Guignot, 1958
• Hydrovatus rangoonensis Guignot, 1954
• Hydrovatus reclusus Guignot, 1955
• Hydrovatus regimbarti Zimmermann, 1919
• Hydrovatus reticuliceps Régimbart, 1895
• Hydrovatus rocchii Biström, 1997
• Hydrovatus rufescens Motschulsky, 1859
• Hydrovatus rufoniger (Clark, 1863)
• Hydrovatus samuelsoni Biström, 1997
• Hydrovatus sandwichensis Biström, 1995
• Hydrovatus sanfilippoi Bilardo & Rocchi, 1990
• Hydrovatus satanas Guignot, 1958
• Hydrovatus satanoides Pederzani & Rocchi, 1982
• Hydrovatus saundersi Biström, 1997
• Hydrovatus schawalleri Biström, 1997
• Hydrovatus scholaeus Guignot, 1958
• Hydrovatus seminarius Motschulsky, 1859
• Hydrovatus semirufus Zimmermann, 1924
• Hydrovatus senegalensis Régimbart, 1895
• Hydrovatus seydeli Guignot, 1953
• Hydrovatus sharpi Branden, 1885
• Hydrovatus similis Biström, 1997
• Hydrovatus simoni Régimbart, 1894
• Hydrovatus sinister Sharp, 1890
• Hydrovatus sitistus Omer-Cooper, 1963
• Hydrovatus sobrinus Omer-Cooper, 1957
• Hydrovatus soror Biström, 1997
• Hydrovatus spadix Guignot, 1948
• Hydrovatus spissicornis Régimbart, 1905
• Hydrovatus sporas Guignot, 1959
• Hydrovatus stappersi Guignot, 1959
• Hydrovatus stridulus Biström, 1997
• Hydrovatus subparallelus Gschwendtner, 1930
• Hydrovatus subrotundatus Motschulsky, 1859
• Hydrovatus subtilis Sharp, 1882
• Hydrovatus sumatrensis Sharp, 1882
• Hydrovatus suturalis Bilardo & Pederzani, 1978
• Hydrovatus testudinarius Régimbart, 1895
• Hydrovatus tristis Guignot, 1961
• Hydrovatus turbinatus Zimmermann, 1921
• Hydrovatus tydaeus Biström, 1997
• Hydrovatus uhligi Biström, 1995
• Hydrovatus unguicularis Biström, 1997
• Hydrovatus unguiculatus Biström, 1997
• Hydrovatus uniformis (Fairmaire, 1869)
• Hydrovatus validicornis Régimbart, 1895
• Hydrovatus verisae Bilardo & Rocchi, 1987
• Hydrovatus vicinus Guignot, 1958
• Hydrovatus villiersi Guignot, 1955
• Hydrovatus visendus Biström, 1997
• Hydrovatus vividus Guignot, 1954
• Hydrovatus vulneratus Biström, 1997
• Hydrovatus vulpinus Biström, 1997
• Hydrovatus weiri Biström, 1997
• Hydrovatus wewalkai Biström, 1999
• Hydrovatus wittei Biström, 1997
• Hydrovatus yagii Kitayama, Mori & Matsui, 1993
• Hydrovatus youngi Biström, 1997