Orectogyrus er en slekt av biller i underordenen Adephaga. familien virvlere. De har todelte fasettøyne, den ene delen er tilpasset å se i vann, den andre til å se i luft. Når farer dukker opp kan de både dykke og gjøre hopp over vannoverflaten.
Quick Facts Rike, Rekke ...
Close
Middelsstore, avlange, blankt svarte virvlere, gjerne med gul ytterkant. De siste bakkroppsleddene stikker ut som en kjegleformet "hale" bak dekkvingene.
Virvlene er rovdyr og spiser insekter som faller ned på vannoverflaten. Disse billene opptrer gjerne i grupper som svømmer rundt på vannoverflaten, og kan minne om radiobiler i et tivoli. Dersom de blir truet dykker de og gjemmer seg nær bunnen. Om en virvler blir fanget, skiller den ut et illeluktende stoff. Dette gjør billen usmakelig for rovdyr og virker også som et alarmstoff overfor andre virvlere.
Slekten er utbredt i Afrika inkludert Madagaskar og Sør-Amerika.
Treliste
- Ordenen biller, Coleoptera
- Underordenen Adephaga
- Familien virvlere, Gyrinidae Latreille, 1810
- Underfamilien Gyrininae Latreille, 1810
- Stammen Orectochilini Régimbart, 1882
- Slekten Orectogyrus Régimbart, 1884
Liste over artene
- Orectogyrus albertianus Ochs, 1938
- Orectogyrus alluaudi Régimbart, 1889
- Orectogyrus angularis Régimbart, 1891
- Orectogyrus argenteovittatus Zimmermann, 1920
- Orectogyrus assimilis Régimbart, 1884
- Orectogyrus aureovittatus Brinck, 1956
- Orectogyrus aureus Ochs, 1934
- Orectogyrus baguenai Ochs, 1953
- Orectogyrus barrosmachadoi Brinck, 1951
- Orectogyrus basilewskyi Guignot, 1951
- Orectogyrus bedeli Régimbart, 1884
- Orectogyrus bicostatus (Boheman, 1848)
- Orectogyrus buettikoferi Régimbart, 1887
- Orectogyrus burgeoni Ochs, 1928
- Orectogyrus camerunensis Ochs, 1924
- Orectogyrus capicolus Brinck, 1955
- Orectogyrus centralis Ochs, 1938
- Orectogyrus coerulescens (Dejean, 1836)
- Orectogyrus collarti Ochs, 1937
- Orectogyrus conjugens Régimbart, 1892
- Orectogyrus constrictus Régimbart, 1907
- Orectogyrus convexus Ochs, 1934
- Orectogyrus coptogynus Régimbart, 1906
- Orectogyrus costatus (Aubé, 1838)
- Orectogyrus cuprifer Régimbart, 1884
- Orectogyrus curvipes Ochs, 1947
- Orectogyrus cyanicollis (Dejean, 1836)
- Orectogyrus cyanipterus Guignot, 1947
- Orectogyrus dahomeensis Régimbart, 1907
- Orectogyrus decorsei Régimbart, 1907
- Orectogyrus dedalus Guignot, 1952
- Orectogyrus demeryi Régimbart, 1891
- Orectogyrus dimidiatus (Laporte de Castelnau, 1835)
- Orectogyrus discors Régimbart, 1891
- Orectogyrus dorsiger Régimbart, 1884
- Orectogyrus dunkeli Ochs, 1934
- Orectogyrus elongatus Régimbart, 1886
- Orectogyrus endroedyi Ochs, 1967
- Orectogyrus erosus Régimbart, 1906
- Orectogyrus escherichi Ochs, 1924
- Orectogyrus eversor Brinck, 1956
- Orectogyrus familiaris Ochs, 1947
- Orectogyrus favareli Guignot, 1942
- Orectogyrus feminalis Régimbart, 1906
- Orectogyrus ferranti Ochs, 1928
- Orectogyrus fluviatilis Régimbart, 1907
- Orectogyrus formosus Ochs, 1928
- Orectogyrus furcatus Ochs, 1934
- Orectogyrus fusciventris Régimbart, 1895
- Orectogyrus gigas Ochs, 1934
- Orectogyrus glaucus Klug in Ehrenberg, 1834
- Orectogyrus grandis Régimbart, 1892
- Orectogyrus grisescens Fairmaire, 1899
- Orectogyrus guignoti Ochs, 1947
- Orectogyrus hancocki Ochs, 1934
- Orectogyrus hastatus Régimbart, 1892
- Orectogyrus hawashensis Omer-Cooper, 1930
- Orectogyrus heros Régimbart, 1884
- Orectogyrus imitans Ochs, 1928
- Orectogyrus interstitialis Ochs, 1938
- Orectogyrus jucundus Régimbart, 1892
- Orectogyrus kasikiensis Ochs, 1938
- Orectogyrus kaszabi Ochs, 1967
- Orectogyrus kelleni Régimbart, 1889
- Orectogyrus kutteri Ochs, 1967
- Orectogyrus lanceolatus Régimbart, 1884
- Orectogyrus laticostis Régimbart, 1906
- Orectogyrus latiusculus Ochs, 1938
- Orectogyrus leroyi Régimbart, 1886
- Orectogyrus lionotus Régimbart, 1884
- Orectogyrus longilabris Régimbart, 1895
- Orectogyrus longitaris Régimbart, 1884
- Orectogyrus luayensis Ochs, 1937
- Orectogyrus lujai Ochs, 1928
- Orectogyrus lunai Brinck, 1958
- Orectogyrus luteolus Ochs, 1938
- Orectogyrus madagascariensis (Dejean, 1836)
- Orectogyrus manensis Guignot, 1938
- Orectogyrus masculinus Régimbart, 1902
- Orectogyrus mesochlorus Guignot, 1952
- Orectogyrus milliaui Ochs, 1937
- Orectogyrus mirabilis Régimbart, 1884
- Orectogyrus mocquerysi Régimbart, 1892
- Orectogyrus monardi Guignot, 1941
- Orectogyrus nairobiensis Régimbart, 1907
- Orectogyrus nanus Ochs, 1934
- Orectogyrus neumanni Ochs, 1934
- Orectogyrus noctuabundus Brinck, 1951
- Orectogyrus oberthueri Régimbart, 1884
- Orectogyrus obscurus Ochs, 1947
- Orectogyrus ochsi Guignot, 1938
- Orectogyrus orectochilinus Ochs, 1925
- Orectogyrus orientalis Régimbart, 1907
- Orectogyrus ornaticollis Aubé, 1838
- Orectogyrus oscari Apetz, 1854
- Orectogyrus oscaris Régimbart, 1884
- Orectogyrus overlaeti Ochs, 1934
- Orectogyrus pallidiventris Ochs, 1934
- Orectogyrus pallidocinctus (Fairmaire, 1880)
- Orectogyrus pamelae Brinck, 1960
- Orectogyrus paradoxus Ochs, 1928
- Orectogyrus patromimus Ochs, 1929
- Orectogyrus peridines Guignot, 1955
- Orectogyrus perrieri Fairmaire, 1899
- Orectogyrus petrinus Brinck, 1960
- Orectogyrus pictimanus Régimbart, 1892
- Orectogyrus polli Régimbart, 1884
- Orectogyrus posticalis Ochs, 1930
- Orectogyrus potamophilus Guignot, 1955
- Orectogyrus probus Brinck, 1956
- Orectogyrus prolongatus Régimbart, 1892
- Orectogyrus pulcherrimus Zimmermann, 1916
- Orectogyrus purpureus Régimbart, 1892
- Orectogyrus rhodesianus Ochs, 1933
- Orectogyrus riggenbachi Ochs, 1934
- Orectogyrus robustus Ochs, 1925
- Orectogyrus rotundatus Ochs, 1934
- Orectogyrus rugulifer Régimbart, 1906
- Orectogyrus rugulosus Régimbart, 1907
- Orectogyrus rustibus Brinck, 1956
- Orectogyrus ruwenzoricus Alwarth, 1921
- Orectogyrus schistaceus (Gerstaecker, 1866)
- Orectogyrus schoenherri (Dejean, 1833)
- Orectogyrus schubotzi Alwarth, 1921
- Orectogyrus schultzei Zimmermann, 1920
- Orectogyrus semisericeus Gestro, 1881
- Orectogyrus semivillosus (Dejean, 1821)
- Orectogyrus sericeus (Klug in Ehrenberg, 1834)
- Orectogyrus sexualis Régimbart, 1891
- Orectogyrus simulans Ochs, 1928
- Orectogyrus sjoestedti Régimbart, 1902
- Orectogyrus socius Ochs, 1943
- Orectogyrus specularis (Dejean, 1833)
- Orectogyrus speculum (Aubé, 1838)
- Orectogyrus spinifer Franciscolo, 1986
- Orectogyrus strigicollis Guignot, 1952
- Orectogyrus subseriatus Régimbart, 1886
- Orectogyrus tavetensis Régimbart, 1906
- Orectogyrus trilobatus Régimbart, 1884
- Orectogyrus uellensis Ochs, 1928
- Orectogyrus vagus Guignot, 1938
- Orectogyrus vanstraeleni Ochs, 1938
- Orectogyrus vedyi Ochs, 1937
- Orectogyrus venustulus Ochs, 1933
- Orectogyrus vermiculatus Ochs, 1952
- Orectogyrus vestitus Régimbart, 1892
- Orectogyrus vicinus Régimbart, 1892
- Orectogyrus virescens Guignot, 1953
- Orectogyrus walterrossii Franciscolo & Sanfilippo, 1986
- Orectogyrus witteanus Ochs, 1938
- Orectogyrus zimmermanni Ochs, 1925