xanthopus is just one of many Staphylinidae.
Known more commonly as Rove Beetles, most of these
beetles have their abdominal segments exposed. The
largest example of the group is the Devil's Coach Horse,
a familiar and imposing species. There are over 1000
species of Staphylinidae in
the UK, most are scavengers and can be found in a variety
of sites. They generally inhabit leaf litter and and
other decaying matter and are good fliers. This species
was found commonly (often in pairs under loose bark) at
Sherwood Forest in October 2008.