Notaulices slightly divergent posteriorly, their posterior extremity directed to a point outside the scutellar hollow (fig. 3). (epomia present and well defined; apical gastral segments almost always modified; third gastral segment almost always very long, dorsoventrally flattened or in the form of a truncated cone, the open (posterior) end of which is more or less tubular; or the apical segments otherwise modified; rarely 2-3 clearly defined simple ring segments beyond the large tergite. In many species the gaster of the female shows a wide divergence of form)

3736_mximage
1. From Nixon (1...