Antennae with 14 segments; stigmalis and radialis reduced to a knob-like thickening at the end of the marginalis, hence no radial cell; dorsal areas of the propodeum smooth, shining, bare except for a quite inconspicuous tuft of hairs at the anterior, dorsal corner; petiole smooth, bare, bounded by a lateral keel (slightly outwardly kinked at middle) and with a medial, rather weak keel. (mandible not forming a very conspicuous beak as seen from in front; mesoscutum on the whole very sparsely hairy; hairs of the fore wing somewhat characteristically long (fig. 103); pronotum short, its collar with no trace of a posterior, transverse keel; no epomia present)
antenna with 15 segments; stigmalis and radialis together enclosing a usually distinct, though sometimes so small as to be virtually absent, radial cell; dorsal areas of propodeum with hairs, even though sometimes sparse, scattered all over its surface; petiole with some sort of sculpture all over and with at least a few long hairs. (A more or less distinct epomia separates the side of the pronotum from the collar; mesoscutum thickly pubescent all over; two apical tergites elongated, narrowly compressed by the sheath-like hypopygium and the whole somewhat resembling a down-curved beak)