Chasmogenus

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

## Utseende
Små til middelsstore, ovale, blankt svarte vannkjær. Palpene er lange og tynne, mye lengre enn de spinkle antennene med en løs, tre-leddet klubbe.

## Levevis
*Chasmogenus*-artene lever i vegetasjonsrike ferskvann.

## Systematisk inndeling

Artslisten følger  og 

* Ordenen biller, **Coleoptera**
** Underordenen Polyphaga
*** Overfamilien vannkjær, **Hydrophiloidea**
**** Familien vannkjær, Hydrophilidae
***** Underfamilien Acidocerinae Zaitzev, 1908
****** Slekten *Chasmogenus* Sharp, 1882
******* Underslekten *[[Crephelochares]]* Kuwert, 1890
******** *[[Chasmogenus (Crephelochares) abnormalis]]* (Sharp, 1890)
******** *[[Chasmogenus (Crephelochares) africanus]]* (d'Orchymont, 1937)
******** *[[Chasmogenus (Crephelochares) irianus]]* Hebauer, 2001
******** *[[Chasmogenus (Crephelochares) livornicus]]* (Kuwert, 1890) - eneste art i Europa
******** *[[Chasmogenus (Crephelochares) luctuosus]]* (d'Orchymont, 1939)
******** *[[Chasmogenus (Crephelochares) lycetus]]* (d'Orchymont, 1939)
******** *[[Chasmogenus (Crephelochares) mauritiensis]]* (Balfour-Browne, 1958)
******** *[[Chasmogenus (Crephelochares) molinai]]* Hebauer, 1992
******** *[[Chasmogenus (Crephelochares) mollis]]* (Régimbart, 1903)
******** *[[Chasmogenus (Crephelochares) molluscus]]* Hebauer, 1992
******** *[[Chasmogenus (Crephelochares) nitescens]]* (Fauvel, 1883)
******** *[[Chasmogenus (Crephelochares) omissus]]* Hebauer, 1995
******** *[[Chasmogenus (Crephelochares) orbus]]* (Watanabe, 1987)
******** *[[Chasmogenus (Crephelochares) paramollis]]* Hebauer, 1992
******** *[[Chasmogenus (Crephelochares) patrizii]]* (Balfour-Browne, 1957) 
******** *[[Chasmogenus (Crephelochares) ruandanus]]* (Balfour-Browne, 1957)
******** *[[Chasmogenus (Crephelochares) rubellus]]* Hebauer, 1992
******** *[[Chasmogenus (Crephelochares) rubricollis]]* (Régimbart, 1903)
******** *[[Chasmogenus (Crephelochares) rudis]]* Hebauer, 1992
******** *[[Chasmogenus (Crephelochares) rusticus]]* (d'Orchymont, 1939)
******** *[[Chasmogenus (Crephelochares) rutiloides]]* (d'Orchymont, 1939)
******** *[[Chasmogenus (Crephelochares) rutilus]]* (d'Orchymont, 1925)
******** *[[Chasmogenus (Crephelochares) szeli]]* Hebauer, 1992
******* Underslekten *Chasmogenus* (i snever forstand)
******** *[[Chasmogenus (Chasmogenus) australis]]* García, 2000
******** *[[Chasmogenus (Chasmogenus) balkei]]* Short, 2010
******** *[[Chasmogenus (Chasmogenus) bariorum]]* García, 2000
******** *[[Chasmogenus (Chasmogenus) barrae]]* Short, 2005
******** *[[Chasmogenus (Chasmogenus) cattienus]]* Hebauer, 2002
******** *[[Chasmogenus (Chasmogenus) fluminensis]]* Clarkson & Rivera, 2014 
******** *[[Chasmogenus (Chasmogenus) fragilis]]* Sharp, 1882
******** *[[Chasmogenus (Chasmogenus) itatiaia]]* Clarkson & Rivera, 2014
******** *[[Chasmogenus (Chasmogenus) lilianae]]* Clarkson & Rivera, 2014
******** *[[Chasmogenus (Chasmogenus) lorenzo]]*  Short, 2005
******** *[[Chasmogenus (Chasmogenus) occidentalis]]* García, 2000
******** *[[Chasmogenus (Chasmogenus) punctulatus]]*  Short, 2010
******** *[[Chasmogenus (Chasmogenus) rufinasus]]* (Knisch, 1924)
******** *[[Chasmogenus (Chasmogenus) ruidus]]* Short, 2005
******** *[[Chasmogenus (Chasmogenus) sapucay]]* Fernandez, 1986
******** *[[Chasmogenus (Chasmogenus) schoedli]]* Short, 2005
******** *[[Chasmogenus (Chasmogenus) ubatuba]]* Clarkson & Rivera, 2014
******** *[[Chasmogenus (Chasmogenus) yukparum]]* García, 2000

## Referanser


## Kilder
* Hansen, M. 1987. *The Hydrophiloidea (Coleoptera) of Fennoscandia and Denmark.* Fauna Entomologica Scandinavica 18. E.J. Brill/Scandinavian Science Press Ltd.
* Bilde av ''Chasmogenus abnormalis''

## Eksterne lenker
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