''Agabus'' is a large

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

predatory Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill th ...

aquatic

beetle Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 describ ...

s in the family Dytiscidae, proposed in 1817 by

William Elford Leach William Elford Leach Royal Society, FRS (2 February 1791 – 25 August 1836) was an English zoologist and marine biologist. Life and work Elford Leach was born at Hoe Gate, Plymouth, the son of an attorney. At the age of twelve he began a me ...

and named after Agabus, an early follower of Christianity. The adult beetles are moderate-sized, 5 to 14 mm long. The genus is primarily

Holarctic The Holarctic realm is a biogeographic realm that comprises the majority of habitats found throughout the continents in the Northern Hemisphere. It corresponds to the floristic Boreal Kingdom. It includes both the Nearctic zoogeographical region ...

in distribution, with only a few species known from the

Afrotropical The Afrotropical realm is one of Earth's eight biogeographic realms. It includes Africa south of the Sahara Desert, the majority of the Arabian Peninsula, the island of Madagascar, southern Iran and extreme southwestern Pakistan, and the island ...

and

Neotropical realm The Neotropical realm is one of the eight biogeographic realms constituting Earth's land surface. Physically, it includes the tropical terrestrial ecoregions of the Americas and the entire South American temperate zone. Definition In bioge ...

s. Ross H. Arnett,

Michael C. Thomas Michael Charles Thomas (May 5, 1948 – October 14, 2019) was an American entomologist who co-authored the book series ''American Beetles''. Born in Miami, Florida, Thomas graduated from the University of South Florida in 1970 with a Bachelor o ...

(2002).
American Beetles: Staphyliniformi
'. Boca Raton, FL: CRC Press. . P. 175-176.Anders N. Nilsson, Mogens Holmen (1995).
The Aquatic Adephaga (Coleoptera) of Fennoscandia and Denmark: II - Dytiscidea
'. Leiden - a.o.: Brill. . P. 87. Three species of ''Agabus'', namely '' A. clypealis'', '' A. discicollis'' and '' A. hozgargantae'' are

endangered An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and inva ...

according to the

IUCN Red List The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biol ...

. The division into subgenera is not widely accepted. However, a number of species groups are recognized after the works of David J. Larson and Anders N. Nilsson. The genus is probably polyphyletic or

paraphyletic In taxonomy (general), taxonomy, a group is paraphyletic if it consists of the group's most recent common ancestor, last common ancestor and most of its descendants, excluding a few Monophyly, monophyletic subgroups. The group is said to be pa ...

. In a recent study of

mitochondrial DNA Mitochondrial DNA (mtDNA or mDNA) is the DNA located in mitochondria, cellular organelles within eukaryotic cells that convert chemical energy from food into a form that cells can use, such as adenosine triphosphate (ATP). Mitochondrial D ...

, ''Agabus'' was found paraphyletic with respect to several of the species groups of '' Platambus'', a closely related genus in the tribe Agabini. Lately the taxonomy of the genus has been revised, and some groups of species were transferred from ''Agabus'' ''

sensu stricto ''Sensu'' is a Latin word meaning "in the sense of". It is used in a number of fields including biology, geology, linguistics, semiotics, and law. Commonly it refers to how strictly or loosely an expression is used in describing any particular co ...

'' to other genera in the tribe Agabini. ''Agabus'' contains the following species:Dytiscidae Species List
at Joel Hallan's Biology Catalog. Texas A&M University. Retrieved on 7 May 2012. * '' Agabus abessinicus'' (Zimmermann, 1928) * '' Agabus adpressus'' Aubé, 1837 * '' Agabus adustus'' Guignot, 1954 * '' Agabus aequabilis'' (Gschwendtner, 1923) * '' Agabus aequalis'' Sharp, 1882 * '' Agabus aeruginosus'' Aubé, 1838 * '' Agabus affinis'' (Paykull, 1798) * '' Agabus africanus'' Pederzani & Schizzerotto, 1998 * '' Agabus ajax'' Fall, 1922 * '' Agabus alexandrae'' Ribera, Hernando & Aguilera, 2001 * '' Agabus alinae'' (Lafer, 1988) * '' Agabus ambiguus'' (Say, 1823) * '' Agabus ambulator'' Régimbart, 1895 * '' Agabus amnicola'' (J.Sahlberg, 1880) * '' Agabus amoenus'' Solsky, 1874 * '' Agabus ancillus'' Fall, 1922 * '' Agabus angusi'' Nilsson, 1994 * '' Agabus antennatus'' Leech, 1939 * '' Agabus anthracinus'' Mannerheim, 1852 * '' Agabus approximatus'' Fall, 1922 * '' Agabus arcticus'' (Paykull, 1798) * '' Agabus aubei'' Perris, 1869 * '' Agabus audeni'' Wallis, 1933 * '' Agabus austinii'' Sharp, 1882 * '' Agabus bakeri'' (Zimmermann, 1924) * '' Agabus basalis'' (Gebler, 1829) * '' Agabus bergi'' Zaitzev, 1913 * '' Agabus bicolor'' (Kirby, 1837) * '' Agabus bifarius'' (Kirby, 1837) * '' Agabus biguttatus'' (Olivier, 1795) * '' Agabus biguttulus'' (Thomson, 1867) * '' Agabus binotatus'' Aubé, 1837 * '' Agabus bipustulatus'' ( Linnaeus, 1767) * '' Agabus blatta'' Jakovlev, 1897 * '' Agabus brandti'' Harold, 1880 * '' Agabus browni'' Kamiya, 1934 * '' Agabus brunneus'' (Fabricius, 1798) * '' Agabus canadensis'' Fall, 1922 * '' Agabus caraboides'' Sharp, 1882 * '' Agabus cephalotes'' Reiche, 1861 * '' Agabus charon'' Wickham, 1912 * '' Agabus clavicornis'' Sharp, 1882 * '' Agabus clypealis'' (Thomson, 1867) * '' Agabus colymbus'' Leech, 1938 * '' Agabus confinis'' (Gyllenhal, 1808) * '' Agabus congener'' (Thunberg, 1794) * '' Agabus congeneroides'' Lomnicki, 1894 * '' Agabus conspersus'' (Marsham, 1802) * '' Agabus conspicuus'' Sharp, 1873 * '' Agabus corticeus'' Lomnicki, 1894 * '' Agabus costulatus'' (Motschulsky, 1859) * '' Agabus coxalis'' Sharp, 1882 * '' Agabus crassipes'' (Fall, 1922) * '' Agabus crypticoides'' Régimbart, 1895 * '' Agabus debilipes'' Régimbart, 1899 * '' Agabus dichrous'' Sharp, 1878 * '' Agabus didymus'' (Olivier, 1795) * '' Agabus dilatatus'' (Brullé, 1832) * '' Agabus discolor'' (Harris, 1828) * '' Agabus disintegratus'' (Crotch, 1873) * '' Agabus dytiscoides'' Régimbart, 1908 * '' Agabus elongatus'' (Gyllenhal, 1826) * '' Agabus erytropterus'' (Say, 1823) * '' Agabus faldermanni'' Zaitzev, 1927 * '' Agabus falli'' (Zimmermann, 1934) * '' Agabus freudei'' Guéorguiev, 1975 * '' Agabus friedrichi'' (Falkenström, 1936) * '' Agabus fulvaster'' Zaitzev, 1906 * '' Agabus fulvipennis'' Régimbart, 1899 * '' Agabus fuscipennis'' (Paykull, 1798) * '' Agabus galamensis'' Nilsson, 1992 * '' Agabus glacialis'' Hochhuth, 1846 * '' Agabus glazunovi'' (Zaitzev, 1953) * '' Agabus godmanni'' Crotch, 1867 * '' Agabus granulatus'' (Falkenström, 1936) * '' Agabus gringo'' Larson, 2000 * '' Agabus griseipennis'' LeConte, 1859 * '' Agabus guttatus'' (Paykull, 1798) * '' Agabus heydeni'' Wehncke, 1872 * '' Agabus hoppingi'' Leech, 1942 * '' Agabus hummeli'' (Falkenström, 1936) * '' Agabus immaturus'' Larson, 1991 * '' Agabus inexspectatus'' Nilsson, 1990 * '' Agabus infuscatus'' Aubé, 1838 * '' Agabus inscriptus'' (Crotch, 1873) * '' Agabus jacobsoni'' Zaitzev, 1905 * '' Agabus japonicus'' Sharp, 1873 * '' Agabus kaszabi'' Guéorguiev, 1972 * '' Agabus kholini'' Nilsson, 1994 * '' Agabus klamathensis'' Larson & Leech, 1989 * '' Agabus kokoosson'' Feng, 1936 * '' Agabus kootenai'' Larson, 1991 * '' Agabus labiatus'' (Brahm, 1790) * '' Agabus laferi'' Nilsson, 1994 * '' Agabus lagabrunensis'' Schizzerotto & Fery, 1989 * '' Agabus lapponicus'' (Thomson, 1867) * '' Agabus leptapsis'' (LeConte, 1878) * '' Agabus lineatus'' Gebler, 1848 * '' Agabus lithax'' Riha, 1961 * '' Agabus lobonyx'' Guignot, 1952 * '' Agabus loeffleri'' Wewalka & Nilsson, 1990 * '' Agabus longissimus'' Régimbart, 1899 * '' Agabus luteaster'' Zaitzev, 1906 * '' Agabus lutosus'' LeConte, 1853 * '' Agabus mackenziensis'' Larson, 1991 * '' Agabus maderensis'' Wollaston, 1854 * '' Agabus mandsuricus'' (Guignot, 1956) * '' Agabus margaretae'' Larson, 1975 * '' Agabus matsumotoi'' Satô & Nilsson, 1990 * '' Agabus melanarius'' Aubé, 1837 * '' Agabus moestus'' (Curtis, 1835) * '' Agabus morosus'' LeConte, 1852 * '' Agabus mucronatus'' (Falkenström, 1936) * '' Agabus nebulosus'' (Forster, 1771) * '' Agabus nevadensis'' Hå.Lindberg, 1939 * '' Agabus niedzwiedzkii'' Lomnicki, 1894 * '' Agabus obliteratus'' LeConte, 1859 * '' Agabus oblongulus'' Fall, 1922 * '' Agabus obsoletus'' LeConte, 1858 * '' Agabus ommani'' Zaitzev, 1908 * '' Agabus pallens'' Poppius, 1905 * '' Agabus pallidus'' Omer-Cooper, 1931 * '' Agabus paludosus'' (Fabricius, 1801) * '' Agabus parvulus'' Lomnicki, 1894 * '' Agabus perditus'' Scudder, 1900 * '' Agabus perssoni'' Nilsson, 1992 * '' Agabus phaeopterus'' (Kirby, 1837) * '' Agabus philippensis'' (Zimmermann, 1924) * '' Agabus picotae'' Foster & Bilton, 1997 * '' Agabus pisobius'' Leech, 1949 * '' Agabus poppiusi'' Nilsson, 2003 * '' Agabus pseudoclypealis'' Scholz, 1933 * '' Agabus punctatus'' F.E.Melsheimer, 1844 * '' Agabus punctulatus'' Aubé, 1838 * '' Agabus raffrayi'' Sharp, 1882 * '' Agabus ragazzii'' Régimbart, 1887 * '' Agabus ramblae'' Millán & Ribera, 2001 * '' Agabus rathbuni'' Scudder, 1900 * '' Agabus regimbarti'' Zaitzev, 1906 * '' Agabus reitteri'' Lomnicki, 1894 * '' Agabus rottensis'' Nilsson, 2001 * '' Agabus rufipennis'' (Gschwendtner, 1933) * '' Agabus rufulus'' Fairmaire, 1859 * '' Agabus rumppi'' Leech, 1964 * '' Agabus ruwenzoricus'' Guignot, 1936 * '' Agabus safei'' Abdul-Karim & Ali, 1986 * '' Agabus sasquatch'' Larson, 1991 * '' Agabus semipunctatus'' (Kirby, 1837) * '' Agabus serricornis'' (Paykull, 1799) * '' Agabus setulosus'' (J.Sahlberg, 1895) * '' Agabus sikhotealinensis'' (Lafer, 1988) * '' Agabus sjostedti'' Régimbart, 1908 * '' Agabus slovzovi'' (J.Sahlberg, 1880) * '' Agabus smithi'' Brown, 1930 * '' Agabus solskii'' Jakovlev, 1897 * '' Agabus strigulosus'' (Crotch, 1873) * '' Agabus striolatus'' (Gyllenhal, 1808) * '' Agabus sturmii'' (Gyllenhal, 1808) * '' Agabus subfuscatus'' Sharp, 1882 * '' Agabus suoduogangi'' Stastný & Nilsson, 2003 * '' Agabus svenhedini'' (Falkenström, 1932) * '' Agabus taeniolatus'' (Harris, 1828) * '' Agabus taiwanensis'' Nilsson & Wewalka, 1994 * '' Agabus thomsoni'' (J.Sahlberg, 1871) * '' Agabus tibetanus'' Zaitzev, 1908 * '' Agabus tristis'' Aubé, 1838 * '' Agabus turcmenus'' Guignot, 1957 * '' Agabus udege'' Nilsson, 1994 * ''

Agabus uliginosus ''Agabus uliginosus'' is a species of beetle native to the Palearctic, including Europe, where it is only found in Austria, Belarus, Belgium, Great Britain including Shetland, Orkney, Hebrides and Isle of Man, Croatia, the Czech Republic, mainl ...

'' ( Linnaeus, 1761) * '' Agabus undulatus'' (Schrank, 1776) * '' Agabus ungeri'' (Heer, 1847) * '' Agabus unguicularis'' (Thomson, 1867) * '' Agabus uralensis'' Nilsson & Petrov, 2006 * '' Agabus valdiviensis'' Gemminger & Harold, 1868 * '' Agabus velox'' Leech, 1939 * '' Agabus vereschaginae'' Angus, 1984 * '' Agabus winkleri'' (Gschwendtner, 1923) * '' Agabus wollastoni'' Sharp, 1882 * '' Agabus xyztrus'' Larson, 2000 * '' Agabus yakutiae'' Nilsson & Larson, 1990 * '' Agabus zetterstedti'' Thomson, 1856 * '' Agabus zimmermanni'' Scholz, 1920

References

External links

Genus Agabus Leach, 1817 (Coleoptera, Dytiscidae) (atlas of beetles of Russia)
{{DEFAULTSORT:Agabus (Beetle) Dytiscidae genera Taxa named by William Elford Leach

References

Further reading

External links