Hydrovatus

Hydrovatus er en slekt av biller og tilhører familiegruppen vannkalver.


== Utseende ==
Ganske små (1,8-4 millimeter), brede og høyt hvelvede, nærmest dråpeformede, halvmatte, gjerne rødbrunlige vannkalver.


== Levevis ==
Artene lever langs bredden av vegetasjonsrike, mudrete dammer og innsjøer og holder seg på eller nær bunnen. De graver i bunnmudderet, og holder seg ofte på 1–2 meters dyp. De kommer sjelden opp for å puste og kan kanskje få tak i luft fra stenglene på vannplanter.


== Utbredelse ==
Slekten forekommer i alle verdensdeler bortsett fra Antarktis.


== Systematisk inndeling ==

Ordenen biller, Coleoptera
Underordenen Adephaga
Overfamilien Caraboidea
Familien vannkalver, Dytiscidae Leach, 1815
Underfamilien småvannkalver, Hydroporinae Aubé, 1836
Stammen Hydrovatini Sharp, 1882
Slekten Hydrovatus Motschulsky, 1853  - i Nord-Europa:
Hydrovatus cuspidatus (Kunze, 1818)


=== Liste over øvrige arter ===
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 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


== Eksterne lenker ==
bugguide.net - bildedatabase over nordammerikanske insekter [1]
(en) Hydrovatus i Encyclopedia of Life 
(en) Hydrovatus i Global Biodiversity Information Facility 
(no) Hydrovatus hos Artsdatabanken 
(sv) Hydrovatus hos Dyntaxa 
(en) Hydrovatus hos Fauna Europaea 
(en) Hydrovatus hos ITIS 
(en) Hydrovatus hos NCBI 
(en) Kategori:Hydrovatus – bilder, video eller lyd på Wikimedia Commons 
Hydrovatus – detaljert informasjon på Wikispecies