Earomyia hirtithorax (Classification and species information.)
Earomyia hirtithorax (Aldrich 1925)
Male. — Shining black. Wings and two basal joints of tarsi yellow. Front velvet black, clothed with numerous long hairs, which are mostly in four rows; width of the front above the antennae about one-seventh of the head width; third antennal joint slightly elongated, about one-half longer than wide, hardly reaching epistoma. Parafacial with very slight gray pruinosity, hardly visible except in favorable light. Palpi black, rather broad; epistoma at the sides with numerous large hairs, many of which are upturned; lunule bare. Thorax shining, covered with long, erect hair, among which no distinct acrostichals or dorsocentrals are visible except close to the scutellum where there appear to be two pairs of each. Scutellum shining black with two pairs of longer bristles and a marginal row of hairs between them. Pleurae shining, the mesopleura with abundant long hairs largely curved forward and upward, those along the hind margin bristle-like. Upper edge of sternopleura with a cluster of upturned large hairs. Halteres entirely black. Calypteres black with fringe of same color. Abdomen wholly shining with rather abundant long hairs especially along the sides. Wings yellow, more infuscated apically and at the extreme base; the small crossvein is opposite the tip of the first vein. Legs shining black except the tarsi, of which the first joints are yellow, the remainder brownish or black.
Female. — Frons somewhat wider than in the male, with shorter hairs; the hairs of the epistoma, mesonotum and abdomen also noticeably shorter than in the male. Two distinct pairs of dorsocentrals with some hairlike ones anterior to them.
Length. Male, 4 mm., female, 3.G mm.
Described from 14 specimens reared at Forest Grove, Oregon, by L. P. Rockwood, from Lupinus polyphyllus Type.—M.2i\Q, Cat. No. 27243, U.S.N.M.