Agabus (beetle)
Agabus is a large genus of predatory aquatic beetles in the family Dytiscidae, proposed in 1817 by William Elford Leach[1] 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 in distribution, with only a few species known from the Afrotropical and Neotropical realms.[2][3] Three species of Agabus, namely A. clypealis,[4] A. discicollis[5] and A. hozgargantae[6] are endangered according to the IUCN Red List. 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.[3] The genus is probably polyphyletic or paraphyletic.[2] In a recent study of mitochondrial DNA, Agabus was found paraphyletic with respect to several of the species groups of Platambus, a closely related genus in the tribe Agabini.[7] Lately the taxonomy of the genus has been revised, and some groups of species were transferred from Agabus sensu stricto to other genera in the tribe Agabini.[8]
| Agabus | |
|---|---|
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| A. uliginosus | |
| Scientific classification  | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Arthropoda | 
| Class: | Insecta | 
| Order: | Coleoptera | 
| Family: | Dytiscidae | 
| Tribe: | Agabini | 
| Genus: | Agabus Leach, 1817  | 
Agabus contains the following species:[9]
- 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 (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
    
- Zool. Misc., 3: 69, 72. Type species: Agabus paykullii Leach, 1817 (= Dytiscus serricornis Paykull, 1799)
 - Ross H. Arnett, Michael C. Thomas (2002). American Beetles: Staphyliniformi. Boca Raton, FL: CRC Press. ISBN 0849319250. P. 175-176.
 - Anders N. Nilsson, Mogens Holmen (1995). The Aquatic Adephaga (Coleoptera) of Fennoscandia and Denmark: II - Dytiscidea. Leiden - a.o.: Brill. ISBN 9004104569. P. 87.
 - Foster, G. 1996. Agabus clypealis. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. Accessed on 28 November 2008.
 - Foster, G. 1996. Agabus discicollis. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. Accessed on 28 November 2008.
 - Foster, G. 1996. Agabus hozgargantae. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. Accessed on 28 November 2008.
 - Ignacio Ribera, Anders N. Nilsson, Alfried P. Vogler (2004). Phylogeny and historical biogeography of Agabinae diving beetles (Coleoptera) inferred from mitochondrial DNA sequences. Molecular Phylogenetics and Evolution 30 (3): 545-562.
 - Nilsson, A.N. (June 2000). "A new view on the generic classification of the Agabus-group of genera of the Agabini, aimed at solving the problem with a paraphyletic Agabus (Coleoptera: Dytiscidae)". Koleopterologische Rundschau. 70: 17–36.
 - Dytiscidae Species List at Joel Hallan's Biology Catalog. Texas A&M University. Retrieved on 7 May 2012.
 
Further reading
    
- Hilsenhoff, W.L. (1986) Life history strategies of some Nearctic Agabini (Coleoptera, Dytiscidae). Entomologica Basiliensia 11: 385-390.
 - Larson D.J. (1989). Revision of North American Agabus Leach (Coleoptera: Dytiscidae): introduction, key to species groups, and classification of the ambiguus-, tristis- and arcticus-groups. The Canadian Entomologist 121: 861-919.
 - Larson D.J. (1991). Revision of North American Agabus Leach (Coleoptera: Dytiscidae): elongatus-, zetterstedti-, and confinis-groups. The Canadian Entomologist 123: 1239-1317.
 - Larson D.J. (1994). Revision of North American Agabus Leach (Coleoptera: Dytiscidae): lutosus-, obsoletus-, and fuscipennis-groups. The Canadian Entomologist 126: 135-181.
 - Larson D.J. (1996). Revision of North American Agabus Leach (Coleoptera: Dytiscidae): the opacus-group. The Canadian Entomologist 128: 613-665.
 - Larson D.J. (1997). Revision of North American Agabus Leach (Coleoptera: Dytiscidae): the seriatus-group. The Canadian Entomologist 129: 105-149.
 - Larson D.J., Alarie Y., Roughley R.E. (2000) Predaceous diving beetles (Coleoptera: Dytiscidae) of the Nearctic Region, with emphasis on the fauna of Canada and Alaska. Ottawa: NRC Research Press. ISBN 0660179679.
 - Larson, D.J. & Nilsson, A.N. (1985) The Holarctic species of Agabus (sensu lato) Leach (Coleoptera: Dystiscidae). The Canadian Entomologist 117: 119-130.
 - Larson D.J. & Wolfe R.W. (1998). Revision of North American Agabus (Coleoptera: Dytiscidae): the semivittatus-group. The Canadian Entomologist 130: 27-54.
 - Nilsson, Anders N. (1982). A key to the identification of the known third-stage larvae of the Fennoscandian species of the genus Agabus (Coleoptera: Dytiscidae). Entomologica Scandinavica 13 (3): 333-338.
 - Nilsson, Anders N. (1986) Life cycle and habitats of the northern European Agabini (Coleoptera: Dytiscidae). Entomologica Basiliensia 11: 391-417, 1986.
 - Nilsson, Anders N. (1987) A key to the first instar larvae of Fennoscandian Agabus Leach (Coleoptera, Dytiscidae). Fauna Norvegica, Series B 34 (2): 131-137.
 - Nilsson, Anders N. (1992) A revision of Afrotropical Agabus Leach (Coleoptera, Dytiscidae), and the evolution of tropicoalpine super specialists. Systematic Entomology 17 (2), 155-179.
 - Nilsson, Anders N. (2000) A new view on the generic classification of the Agabus-group of genera of the Agabini, aimed at solving the problem with a paraphyletic Agabus (Coleoptera: Dytiscidae). Koleopterologische Rundschau 70: 17–36.
 
