Aphodius foetens (Fabricius, 1787)
Widespread but local throughout England, Wales and Scotland (Jessop). Joy only states southern Scotland. Occurs in various types of dung but especially cattle dung. Adults occur during June and again in late summer and autumn. Included in our Watford list on the strength of a single specimen from Common moor during August 2007. It is of course very likely that the species occurs elsewhere in our area but such occurrences are probably infrequent as we have sampled extensively across Watford since 2003. If the species has recently arrived we should be able to add to our records during 2008 as the moor, amongst other areas, is regularly sampled.
Superficially close to the much more common A.fimetarius but quickly separated in the field on abdominal colour.

6-9mm. On average a little larger than A.fimetarius. Antennae and palpi brown. Clypeus gently produced laterally in front of eyes, smoothly rounded anteriorly, punctate throughout, very finely so basally. Male with three well developed tubercles. Pronotum glabrous, less transverse than A.fimetarius, base bordered, side border continuing onto front margin for a short distance. Black with yellow or orange front angles, with fine puncturation throughout, barely visible at X20, and with much larger punctures which are absent, or visibly so, from anterior part of disc. Hind margin finely crenulate towards hind angle. Male without the anterior depression seen in A.fimetarius. Scutellum equilateral or slightly elongate, coarsely punctured. Elytra red and shining, striae deep and obscurely punctate, wider than in A.fimetarius. Abdominal sternites orange. Legs dark brown.

Description from 1 Watford specimen at X20