EUCORETHRA, A GENUS OF CULICIDÆ

Extract

Eucorethra, Underwood*

Intermediate between Corethrella and Sayomyia, having the antennæ 14-jointed, as in the former, but the spaces between the verticels almost bare, as in the latter; differing from each in the much shorter second joint of the antennæ, which is only slightly longer than wide. Antennæ of male rather robust, submoniliform on the basal half, the first six joints only slightly longer than wide, the remaining joints increasing in length and decreasing in diameter toward the apex, the antepenult about half as long as the penult, verticels composed on numerous very long bristly hairs except on the last joint; antennæ of female nearly cylindrical, the joints gradually increasing in length to the apex, scarcely thickened at the insertion of the verticels, which consist of a few rather short bristly hairs; probosics about one and one-half times as long as height of head, palpi inserted near three-fourths of its length, 4-jointed; first tarsal joint much longer than the second; venation as in Culex.