Published online by Cambridge University Press: 31 May 2012
This subfamily comes nearest to the Aporinæ, and a few of the males are easily confused with and mistaken for some males in the latter group.
The head is, however, lenticular, very thin antero-posteriorly, the temples being very flat, while the antennæ are always placed much closer to the mouth, on or below an imaginary line drawn from the base of the eyes. These characters ought to enable the student to recognize readily a wasp falling in this group.
Some males in the subfamlry Aporinæ have a lenticurar head, but in these the antennæ are inserted above this inraginary line, never on orbelow it.