Male : Length 11 mm. Occiput and vertex black; front yellow with a shallow black triangle at vertex, the black extending in a rather narrow stripe to base of antennae, where it is slightly forked; face yellow, cheeks black, this black extending up about to the depressed grooves of the face, which are less yellow and more shining than the rest of the face and somewhat more whitish; lower ends of posterior orbits very narrowly reddish; antennae blackish with first and third joints more or less reddish; style short and thick, third joint somewhat pointed at tip, second joint with a large projection on the side; length of antennal joints about as 15-67-38, of style as 9; proboscis blackish, a little more than twice as long as head.