Gyrinus

Gyrinus is a genus of small aquatic whirligig beetles in the family Gyrinidae native to the Palearctic (including Europe), the Near East, the Nearctic and North Africa. It contains the following species: ...
Found on http://en.wikipedia.org/wiki/Gyrinus

Gyrinus

Gyrinus is a genus of eleven species of whirligig beetles (Gyrinidae) of about 6 mm length found in stagnant water.
Found on http://www.probertencyclopaedia.com/browse/BGA.HTM
No exact match found