Male.—Head and thorax deep black, the membranous portions of the pleura being slightly tinged with ruddy. Abdomen dorsally dirty whitish, the segments crossed by broad and slightly oblique bands of deep smoky which leave traces of ground color only on anterior and posterior margins, thus giving to the naked eye the appearance of a smoky-black abdomen ringed with whitish; ventrally more evenly smoky-black with posterior margins of segments narrowly pale.