Helophorus

Helophorus ís the only genus in the beetle family Helophoridae (traditionally included within Hydrophilidae as the subfamily Helophorinae). They are small insects, found mainly in the Holarctic region (150 occur in Palearctic and 41 species in North America), but two or three species also live in the Afrotropical region, Central America and one i...
Found on http://en.wikipedia.org/wiki/Helophorus

Helophorus

Helophorus is a genus of 31 species of beetles of the family Hydraenidae, twenty species living in Britain. They have a distinctive pronotum with five long grooves separated by swollen ridges.
Found on http://www.probertencyclopaedia.com/browse/BH.HTM
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