Lygistorrhina singularis (Williston, 1896)

Male: Front, face and occiput black. Antennae brown, the basal joints somewhat yellowish. Mesonotum opaque deep reddish-brown, the humeri and postalar callosities yellowish. Pleurae brown or yellowish-brown, shining. Abdomen black, the first segment and a posterior band on the second, third and fourth segments yellow. Halteres yellow. Wings nearly hyaline, lightly clouded on the outer part. Legs, including coxae, light yellow ; the tarsi and the thickened portion of the hind tibias infuscated or blackish. Length 4-5 mm.