Hydrovatus

* se systematisk inndeling

***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 onigiri]]* Watanabe & Biström, 2022
* *[[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

## Referanser


## Eksterne lenker
* bugguide.net - bildedatabase over nordammerikanske insekter https://bugguide.net/node/view/427457
*