♂. Length, 8.5–10 mm.; of anterior wings, about 6–7 mm. Black with bright yellow markings. Head nearly quadrate, a little wider than high, closely and finely punctate. Eyes entire, elongate oval, inner margins parallel, inclined to light olive green. Ocelli in a triangle, the first a little larger than the last two, and located at the base of a slight cavity. A small cavity back and on the outer side of each of hind ocelli. Head covered with a sparse growth of long whitish pubescence, becoming thicker on face and back of eyes. Clypeus yellow and rounded, with two distinct lobes, each just inside of an imaginary line drawn straight down from base of antennæ, also a small but less distinct lobe between these two, very slightly blackened between, and including lobes. Mandibles yellow outwardly, rufous tipped.