| Hydrovatus (Vathydrus) clypealis Sharp, 1876 | |
| Hydrovatus (Vathydrus) cuspidatus Kunze, 1818 | |
| Hydrovatus (Vathydrus) simplex (Sharp, 1882) | ⇒ Hydrovatus cuspidatus Kunze, 1818 |
| Hydrovatus abraeoides Régimbart, 1895 | |
| Hydrovatus absonus Guignot, 1948 | |
| Hydrovatus acuminatus Motschulsky, 1859 | Predaceous diving beetle |
| Hydrovatus adachii (Kamiya, 1932) | ⇒ Hydrovatus subtilis Sharp, 1882 |
| Hydrovatus adelphus (Guignot, 1956) | ⇒ Hydrovatus obsoletus Peschet, 1922 |
| Hydrovatus agathodaemon Biström, 1997 | |
| Hydrovatus amplicornis Régimbart, 1895 | |
| Hydrovatus angusticornis Biström, 1997 | |
| Hydrovatus antennatus Peschet, 1924 | |
| Hydrovatus aristidis Leprieur, 1879 | |
| Hydrovatus armstrongi (Watts, 1978) | ⇒ Hydrovatus ovalis Sharp, 1882 |
| Hydrovatus asemus Biström, 1997 | |
| Hydrovatus asymmetricus Biström & We..., 1994 | |
| Hydrovatus austrocaledonicus Perroud & Mo..., 1864 | |
| Hydrovatus badeni Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus balfourbrownei Biström, 1997 | |
| Hydrovatus balneator Guignot, 1954 | |
| Hydrovatus baptus Guignot, 1954 | |
| Hydrovatus batekensis Bilardo & Sa..., 2016 | |
| Hydrovatus bedoanus Bruneau de M..., 1963 | |
| Hydrovatus bicolor Guignot, 1956 | |
| Hydrovatus bistroemi Bilardo & Sa..., 2016 | |
| Hydrovatus bomansi Guignot, 1955 | |
| Hydrovatus bonvouloinri Sharp, 1882 | |
| Hydrovatus bonvouloiri Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus brancuccii Biström, 1997 | |
| Hydrovatus bredoi Gschwendtner, 1943 | |
| Hydrovatus brevipes Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus brevipilis Guignot, 1942 | |
| Hydrovatus brownei Omer-Cooper, 1955 | |
| Hydrovatus brunneus Guignot, 1961 | |
| Hydrovatus bullatus Guignot, 1958 | |
| Hydrovatus capnius Guignot, 1950 | Miller Canyon woodlandsnail |
| Hydrovatus caraibus Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus cardoni Severin, 1890 | |
| Hydrovatus castaneus Motschulsky, 1855 | Menziesia |
| Hydrovatus cessatus Guignot, 1956 | |
| Hydrovatus cessatus australis Biström, 1997 | |
| Hydrovatus cessatus cessatus Guignot, 1956 | |
| Hydrovatus charactes Guignot, 1955 | |
| Hydrovatus collega Guignot, 1955 | |
| Hydrovatus compactus Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus compressus (Sharp, 1882) | ⇒ Hydrovatus pustulatus F.E.Melsheimer, 1844 |
| Hydrovatus concii Bilardo & Pe..., 1978 | |
| Hydrovatus concolor Sharp, 1887 | Diamond Valley suncup |
| Hydrovatus confertus Sharp, 1882 | Grand Junction camissonia |
| 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 | Grand Junction camissonia |
| Hydrovatus cribratus Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus cristatus Guignot, 1958 | |
| Hydrovatus cruentatus H.J.Kolbe, 1883 | |
| Hydrovatus dama Guignot, 1958 | |
| Hydrovatus davidis Young, 1956 | |
| Hydrovatus deceptor Schizzerotto..., 2015 | |
| Hydrovatus dentatus Bilardo & Ro..., 1990 | |
| Hydrovatus deserticola Guignot, 1950 | Miller Canyon woodlandsnail |
| Hydrovatus deserticola deserticola Guignot, 1950 | |
| Hydrovatus deserticola joyceae Nilsson, 2001 | |
| Hydrovatus diabolicus Biström & La..., 1995 | |
| Hydrovatus difformis Régimbart, 1895 | |
| Hydrovatus diversipunctatus Biström & Be..., 2016 | |
| 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 pictulus Sharp, 1882 |
| Hydrovatus felixi Biström, 1997 | |
| Hydrovatus fernandoi Biström, 1997 | |
| Hydrovatus ferrugineus (Zimmermann, 1920) | ⇒ Hydrovatus acuminatus Motschulsky, 1859 |
| Hydrovatus flammulatus Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus flebilis Guignot, 1945 | |
| Hydrovatus fractus Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus frater Régimbart, 1895 | |
| Hydrovatus fulvescens Motschulsky, 1859 | |
| Hydrovatus fulvicollis Guignot, 1958 | |
| Hydrovatus gabonicus Régimbart, 1895 | |
| Hydrovatus galpini Omer-Cooper, 1957 | |
| Hydrovatus glaber Guignot, 1953 | |
| Hydrovatus globosus Biström & Be..., 2016 | |
| Hydrovatus globulosus Gschwendtner, 1943 | |
| Hydrovatus grabowskyi Régimbart, 1899 | |
| Hydrovatus gracilis Régimbart, 1899 | |
| Hydrovatus granosus Guignot, 1958 | |
| Hydrovatus gravicornis (Omer-Cooper, 1957) | ⇒ Hydrovatus flammulatus Sharp, 1882 |
| Hydrovatus gravis Guignot, 1954 | |
| Hydrovatus guignoti Omer-Cooper, 1957 | |
| Hydrovatus guignotianus Guignot, 1959 | |
| Hydrovatus hamatus Guignot, 1950 | Miller Canyon woodlandsnail |
| Hydrovatus heterogynus Zimmermann, 1926 | |
| Hydrovatus hintoni Biström, 1997 | |
| Hydrovatus hornii Crotch, 1873 | |
| Hydrovatus humilis (Sharp, 1882) | ⇒ Hydrovatus acuminatus Motschulsky, 1859 |
| Hydrovatus imitator Biström, 1997 | |
| Hydrovatus impunctatus Guignot, 1953 | |
| Hydrovatus indianensis (Blatchley, 1910) | ⇒ Hydrovatus pustulatus F.E.Melsheimer, 1844 |
| Hydrovatus inexpectatus Young, 1963 | |
| Hydrovatus inornatus (Sharp, 1882) | ⇒ Hydrovatus leconteii Clark, 1862 |
| Hydrovatus insolitus Guignot, 1948 | |
| Hydrovatus irakensis Abdul-Karim ..., 1986 | |
| Hydrovatus irianensis Biström, 1997 | |
| Hydrovatus ischyrus Guignot, 1954 | |
| Hydrovatus jaechi Biström, 1997 | |
| Hydrovatus japonicus Takizawa, 1933 | |
| Hydrovatus kavanaughi Biström, 1997 | |
| Hydrovatus laosensis Biström, 1997 | |
| Hydrovatus latipalpis Biström, 1997 | |
| Hydrovatus leconteii Clark, 1862 | |
| Hydrovatus leonardii Bilardo & Pe..., 1978 | |
| Hydrovatus lintrarius Guignot, 1958 | |
| Hydrovatus longicornis Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus longior Biström, 1997 | |
| Hydrovatus longistilus Bilardo & Ro..., 2008 | |
| Hydrovatus maai Biström, 1997 | |
| Hydrovatus macrocephalus Gschwendtner, 1934 | |
| Hydrovatus macrocerus Régimbart, 1895 | |
| Hydrovatus madagascariensis Régimbart, 1903 | |
| Hydrovatus marlieri Guignot, 1956 | |
| Hydrovatus medialis J.Balfour-Br..., 1939 | |
| Hydrovatus megalocerus Bilardo & Pe..., 1978 | |
| Hydrovatus meridionalis Abdul-Karim ..., 1986 | |
| Hydrovatus mollis Biström, 1997 | |
| Hydrovatus morettoi Schizzerotto..., 2015 | |
| 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 & Ro..., 1999 | |
| Hydrovatus niger Gschwendtner, 1938 | |
| Hydrovatus nigricans Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus nigrita Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus nilssoni Biström, 1997 | |
| Hydrovatus nimbaensis Guignot, 1954 | |
| Hydrovatus niokolensis Guignot, 1956 | |
| Hydrovatus noumeni Bilardo & Ro..., 1990 | |
| Hydrovatus oblongipennis Régimbart, 1895 | |
| Hydrovatus oblongiusculus Régimbart, 1895 | |
| Hydrovatus oblongus Omer-Cooper, 1957 | |
| Hydrovatus obsoletus Peschet, 1922 | |
| Hydrovatus obtusus Motschulsky, 1855 | Menziesia |
| Hydrovatus occidentalis (Guignot, 1949) | ⇒ Hydrovatus antennatus Peschet, 1924 |
| Hydrovatus omentatus Guignot, 1950 | Miller Canyon woodlandsnail |
| Hydrovatus opacus Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus otiosus Guignot, 1945 | |
| Hydrovatus ovalis Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus parallelipennis Régimbart, 1895 | |
| Hydrovatus parallelus (Sharp, 1882) | ⇒ Hydrovatus parallelipennis Régimbart, 1895 |
| Hydrovatus parameces Guignot, 1958 | |
| Hydrovatus parvulus Régimbart, 1900 | |
| Hydrovatus pastremus Guignot, 1942 | |
| Hydrovatus pederzanii Bilardo & Ro..., 1990 | |
| Hydrovatus peninsularis Young, 1953 | Ball-head skyrocket |
| Hydrovatus perrinae Bilardo & Pe..., 1978 | |
| Hydrovatus perssoni Biström & Ni..., 1997 | |
| Hydrovatus pescheti Omer-Cooper, 1931 | |
| Hydrovatus piceus Guignot, 1961 | |
| Hydrovatus picipennis Motschulsky, 1859 | |
| Hydrovatus pictulus Sharp, 1882 | Grand Junction camissonia |
| 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 procus (Guignot, 1942) | ⇒ Hydrovatus spissicornis Régimbart, 1905 |
| Hydrovatus pudicus Clark, 1863 | |
| Hydrovatus pulcher Gschwendtner, 1934 | |
| Hydrovatus pumilus Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus punctipennis Motschulsky, 1859 | |
| Hydrovatus pustulatus F.E.Melsheimer, 1844 | |
| Hydrovatus pustulatus compressus (Sharp, 1882) | ⇒ Hydrovatus pustulatus F.E.Melsheimer, 1844 |
| Hydrovatus pustulatus pustulatus (Melsheimer, 1844) | ⇒ Hydrovatus pustulatus F.E.Melsheimer, 1844 |
| Hydrovatus pyrrus Guignot, 1958 | |
| Hydrovatus rangoonensis Guignot, 1954 | |
| Hydrovatus reclusus Guignot, 1955 | |
| Hydrovatus regimbarti Zimmermann, 1919 | Florida Mountain woodlandsnail |
| Hydrovatus remotus Biström & Wa..., 2017 | |
| Hydrovatus reticuliceps Régimbart, 1895 | |
| Hydrovatus rigatoi Bilardo & Ro..., 2019 | |
| Hydrovatus rocchii Biström, 1997 | |
| Hydrovatus rufescens Motschulsky, 1859 | |
| Hydrovatus rufoniger Clark, 1863 | Grand Junction camissonia |
| Hydrovatus rufoniger politus Sharp, 1882 | |
| Hydrovatus rufoniger rufoniger Clark, 1863 | |
| Hydrovatus samuelsoni Biström, 1997 | |
| Hydrovatus sandwichensis Biström, 1995 | |
| Hydrovatus sanfilippoi Bilardo & Ro..., 1990 | |
| Hydrovatus satanas Guignot, 1958 | |
| Hydrovatus satanoides Pederzani & ..., 1982 | |
| Hydrovatus saundersi Biström, 1997 | |
| Hydrovatus schawalleri Biström, 1997 | |
| Hydrovatus scholaeus Guignot, 1958 | |
| Hydrovatus seminarinus Motschulsky, 1859 | |
| Hydrovatus seminarius Motschulsky, 1859 | |
| Hydrovatus semirufus Zimmermann, 1924 | Eveningsnow |
| Hydrovatus senegalensis Régimbart, 1895 | |
| Hydrovatus seydeli Guignot, 1953 | |
| Hydrovatus sharpi (Branden, 1885) | ⇒ Hydrovatus regimbarti Zimmermann, 1919 |
| Hydrovatus similis Biström, 1997 | |
| Hydrovatus simoni Régimbart, 1894 | |
| Hydrovatus singularis Guignot, 1956 | |
| Hydrovatus sinister Sharp, 1890 | |
| Hydrovatus sitistus Omer-Cooper, 1963 | |
| Hydrovatus sobrinus Omer-Cooper, 1957 | |
| Hydrovatus sordidus (Sharp, 1882) | ⇒ Hydrovatus acuminatus Motschulsky, 1859 |
| Hydrovatus soror Biström, 1997 | |
| Hydrovatus spadix Guignot, 1948 | |
| Hydrovatus spissicornis Régimbart, 1905 | |
| Hydrovatus sporas Guignot, 1959 | |
| Hydrovatus sringeriensis Manivannan &..., 2012 | |
| Hydrovatus stappersi Guignot, 1959 | |
| Hydrovatus stridulus Biström, 1997 | |
| Hydrovatus subparallelus Gschwendtner, 1930 | |
| Hydrovatus subrotundatus Motschulsky, 1859 | |
| Hydrovatus subtilis Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus sumatrensis Sharp, 1882 | Grand Junction camissonia |
| Hydrovatus suturalis Bilardo & Pe..., 1978 | |
| Hydrovatus tardiosus Guignot, 1953 | |
| 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 & Ro..., 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, Mo..., 1993 | |
| Hydrovatus youngi Biström, 1997 | |
| Queda compressa Sharp, 1882 | Grand Junction camissonia |
| Queda hydrovatoides Zimmermann, 1921 | |
| Queda youngi Biström, 1990 | |
