Dactylosternum

Dactylosternum
Dactylosternum abdominale
Nomenklatur
Dactylosternum Wollaston, 1854
Synonymi
Kruia Spangler & Perkins, 1981^[1]
Populærnavn
kulevannkjær
Klassifikasjon
Rike		Dyreriket
Rekke		Leddyr
Klasse		Insekter
Orden		Biller
Familie		Vannkjær
Økologi
Antall arter:		ca. 75, én i Europa
Utbredelse:		kosmopolittisk
Inndelt i

Dactylosternum er en slekt av biller som hører til familien vannkjær (Hydrophilidae).

Utseende

Små til middelsstore (3-5 millimeter), blanke, ovale vannkjær. På farge er de gjerne svarte. Oversiden er fint punktert.

Levevis

Dactylosternum-artene lever på land, gjerne mellom løvstrø og annet råtnende plantemateriale, for eksempel komposthauger.

Utbredelse

Slekten er nært kosmopolittisk, men mangler i de nordligste områdene.

Systematisk inndeling

Treliste

Ordenen biller, Coleoptera
- Underordenen Polyphaga
  - Overfamilien vannkjær, Hydrophiloidea
    - Familien vannkjær, Hydrophilidae
      - Underfamilien vannkjær, Hydrophilinae
        Stamme kulevannkjær, Sphaeridiini
        Slekten Dactylosternum Wollaston, 1854
        Dactylosternum abdominale (Fabricius, 1792) - eneste art i Europa
        
        Dactylosternum advectum Horn, 1890
        
        Dactylosternum americanum (Mulsant, 1844)
        
        Dactylosternum antennale d'Orchymont, 1924
        
        Dactylosternum arabicum J. Balfour-Browne, 1951
        
        Dactylosternum arrowi Knisch, 1924
        
        Dactylosternum auripes Fauvel, 1883
        
        Dactylosternum bakeri d'Orchymont, 1925
        
        Dactylosternum bommelanum Hebauer, 2008
        
        Dactylosternum bormeanum Hebauer, 2001
        
        Dactylosternum bryanti d'Orchymont, 1925
        
        Dactylosternum cacti (LeConte, 1855)
        
        Dactylosternum cassidaeforme (Brullé, 1835)
        
        Dactylosternum cayannum (Mulsant, 1844)
        
        Dactylosternum centrale Sharp, 1882
        
        Dactylosternum chrysopelma (Spangler & Perkins, 1981)
        
        Dactylosternum circumcinctum Fikáek, 2010
        
        Dactylosternum coelostomoides d'Orchymont, 1923
        
        Dactylosternum convexum (Castelnau, 1840)
        
        Dactylosternum corbetti Balfour-Browne, 1942
        
        Dactylosternum corporaali d'Orchymont, 1923
        
        Dactylosternum cycloides Knisch, 1921
        
        Dactylosternum dachinabadense d'Orchymont, 1923
        
        Dactylosternum densepunctatum d'Orchymont, 1937
        
        Dactylosternum depressum (Klug, 1833)
        
        Dactylosternum desertum Hebauer, 2001
        
        Dactylosternum despectum Hebauer, 2008
        
        Dactylosternum destructum Hebauer, 2008
        
        Dactylosternum detersum Hebauer, 2001
        
        Dactylosternum diaperinum (Klug, 1833)
        
        Dactylosternum dispar (Sharp, 1882)
        
        Dactylosternum dohertyi Balfour-Browne, 1942
        
        Dactylosternum dytiscoides (Fabricius, 1775)
        
        Dactylosternum externum (Sharp, 1887)
        
        Dactylosternum falsum Hebauer, 2001
        
        Dactylosternum fikaceki Hebauer, 2008
        
        Dactylosternum flavicorne (Mulsant, 1844)
        
        Dactylosternum fletcheri d'Orchymont, 1923
        
        Dactylosternum foveolatum Jayaswal, 1971
        
        Dactylosternum fryanum Knisch, 1924
        
        Dactylosternum fulgens Orchymont, 1937
        
        Dactylosternum grossulum (Sharp, 1882)
        
        Dactylosternum grouvellei Guillebeau, 1894
        
        Dactylosternum helleri d'Orchymont, 1925
        
        Dactylosternum hydrophiloides (W.S. MacLeay, 1825)
        
        Dactylosternum ilaganum Hebauer, 2001
        
        Dactylosternum illutum Hebauer, 2001
        
        Dactylosternum inaequale Knisch, 1921
        
        Dactylosternum indicum d'Orchymont, 1923
        
        Dactylosternum intermedium Régimbart, 1907
        
        Dactylosternum kanakorum Fikáek, 2010
        
        Dactylosternum lanipes Hebauer, 2000
        
        Dactylosternum latum (Sharp, 1873)
        
        Dactylosternum leveri Balfour-Browne, 1942
        
        Dactylosternum marginale (Sharp, 1876)
        
        Dactylosternum miraculum Knisch, 1924
        
        Dactylosternum montaguei Balfour-Browne, 1939
        
        Dactylosternum papuense Balfour-Browne, 1942
        
        Dactylosternum picicorne (Mulsant, 1844)
        
        Dactylosternum prabhaae Jayaswal, 1971
        
        Dactylosternum profundum Régimbart, 1907
        
        Dactylosternum proxime d'Orchymont, 1923
        
        Dactylosternum pui Jia & Feng-Long, 2002
        
        Dactylosternum punctigerum Knisch, 1924
        
        Dactylosternum pygmaeum Régimbart, 1903
        
        Dactylosternum rarum Knisch, 1924
        
        Dactylosternum riberai Fikáček, Zhao, Kobe & Grebennikov, 2020
        
        Dactylosternum salvazai d'Orchymont, 1925
        
        Dactylosternum scutellare Régimbart, 1907
        
        Dactylosternum subdepressum (Laporte, 1840)
        
        Dactylosternum sublevigatum (Mulsant, 1844)
        
        Dactylosternum subquadratum (Fairmaire, 1849)
        
        Dactylosternum subrotundum (Fabricius, 1792)
        
        Dactylosternum superficiale Knisch, 1925
        
        Dactylosternum tibiale (Sharp, 1882)
        
        Dactylosternum trilobatum Hebauer, 2001
        
        Dactylosternum vinsoni Balfour-Browne, 1954
        
        Dactylosternum vitalisi d'Orchymont, 1925
        
        Dactylosternum waigeuense Balfour-Browne, 1942

Referanser

^ Martin Fikáček, Qing-Hao Zhao, Ishmeal N. Kobe og Vasily Grebennikov (2020) Kruia rediscovered: phylogenetic implications, larval morphology, and biology of an enigmatic hydrophilid beetle from western Africa (Coleoptera: Hydrophilidae). Arthropod Systematics and Phylogeny 78: 427-444. [1]