Keys for the identification of British Hydrophilidae

This is a family well-represented in the British fauna with 18 genera and 70 species. The key to genus below contains keys to species of several of the genera. There are separate keys for the large terrestrial genus Cercyon and genus Enochrus.
Author(s): 
Mike Hackston
Free: 
Yes
Available as: 
Online
Keywords: 
Hydrophilidae Cercyon Enochrus