Epicaerus (Epicaerus) tenuis Sharp 1891

Hab.MEXICO, Xautipa and Chilpancingo in Guerrero (H. H. Smith).

Gracilis, niger, griseo-squamosus; rostro anterius in medio leviter impresso; prothorace subcylindrico, inæquali; elytris seriatim remote sat fortiter punctatis.
 
Long. 8—9 millim.

Rostrum in the male with a distinct short longitudinal depression on the middle, in the female almost flat; a distinct fovea between the eyes. Thorax very little broader behind, the surface covered with vague impressions, and with an obscure depression along the middle. Elytra with regular series of punctures, which towards the suture in front are larger and foveiform. Eight specimens.
 
This is one of the most slender insects of the genus, and the sexual distinctions are comparatively slight, the female being, however, rather broader and more convex. The next two species approach E. tenuis very closely, but the thorax in them is less rugose.