Diagnosis.
Female/male. Integument mostly black, dark brownish on sterna and terga margin. Head wider than long. Labial palpus shorter than glossa and maxillary palpus. Maxillary palpus as long as galea. Outer surface of galea mat and sculptured. Clypeus two and a half times as wide as long, without medio-longitudinal groove, densely punctate (i=d). Propodeal triangle shiny, very short, with declivous basal area. Terga with basal concavity.
Female. L=10.2mm. Integument black; sterna margins and Tb3 brownish. Mandibles apex reddish. Flagellum reddish below. Face with white hairs. Head posterior face, mesosoma, legs, T1 and sterna with golden hairs. Spurs of Tb2 with 8-10 sharp outstanding spines. T1-4 with continuous white, apical fringes. Prepygidial fimbria black to dark brown. Pygidial plate with a strong, high, median carina.
Male. L=10.0mm. Head wider than long. Eyes not prominent; inner margins converging ventrally. Antennae black. A5 longer than wide. Mesoscutum and scutellum covered with erect, greyish hairs. Tb3 flattened, with anterior region of distal end enlarged. Bt3 patellate, as wide as long. Medio-apical processes of S6 with two widely separated, curved processes. S7 narrowed basally; apex shallowly concave, with two rounded lobes. S8 with medio-lateral hairy tooth; apex subelliptic. Genitalia as illustrated in Figs.