An all-black species with bifasciate wings. It most resembles Dipogon bifasciatus from which it may be told in the female by the shorter antenna; the third segment being about equal in length to the scape and subequal to the fourth. The male has crenulate antennae and a subgenital plate with short hairs medially.
Widely distributed in England especially in the east, very local in Wales, and limited to a small area in Scotland. It is apparently unrecorded from Ireland.