This bug was photographed on the building at Camp Logan Fontenelle.  It is probably common in this area but is seldom seen.  In spring and summer it is found beneath stones, loose bark and piles of weeds.  It is often attracted to lights.

This insect is also called the Black May beetle-eater. It feeds on other insects including the May beetle. It is one of the most abundant assassin bugs in the U.S. A distinctive feature of these bugs is the “ankle weights” or “leg-warmers” they seem to be wearing on the first and second pair of legs. This is composed of a dense mat of hairs, with pores beneath them that exude a thin film of oil. This allows the bug to chase prey over slick surfaces, cling to victims and grip a female. It can inflict a painful bite but does not feed on blood nor transmit disease.