osborni species-group

(Fig. 18)

Diagnosis. This group is recognized by: gena depressed in front of occipital carina, dorsal faces of propodeum impunctate, dorsal carinae of propodeum present for whole length, inferior carina of propodeum forming a black lamella, propodeal valvula with strong striae and deep dorsal incision, basal petiole of S1 with sparse striae, female clypeus pyriform with coarse sculpture and preapical depression, female with foveae not included in a modified area.