Male like female, without a process or tooth in the lower scapal region (apart from the short interantennal ridge)

Male like female, propodeum with no sharp division between the dorsal and lateral surfaces

Male like female, the prepectus rounded.

Male like female, propodeum without median longitudinal groove

Male like female, femur more or less elliptical, not abruptly widened at base

Male like female (gaster pedunculate, not sessile or subsessile)

Male like female, mandible with strong, rounded upper tooth and much smaller, recessed lower tooth. Mandibles entirely black.

The scape is extensively yellow beneath.