Geotrupidae Key to British Species

A key to the British species of family Geotrupidae, revised to include Odonteus armiger which was formerly placed in a separate family Bolboceratidae.
Author(s): 
Mike Hackston (2019) Adapted and updated from Joy (1932) and translated from Machatschke (1969).
Free: 
Yes
Available as: 
Online
PDF