* 



%\\t Canadian ^utamalajjbt. 



Vol. XXXIV. LONDON, JUNE, 1902. No. 6 



CLASSIFICATION OF THE FOSSORIAL, PREDACEOUS AND 



PARASITIC WASPS, OR THE SUPERFAMILY 



VESPOIDEA. 



BY WILLIAM H. ASHMEAD, A. M., ASSISTANT CURATOR, DIVISION OF INSECTS, 



U. S. NATIONAL MUSEUM. 



(Paper No. 5.— Continued from Vol. XXXIV., p. 88.) 

 Subfamily IV. — Planicepinse. 



This subfamily comes nearest to the Aporince, 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 antennas 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 subfamily Aporince have a lenticular head, but in 

 these the antennae are inserted above this imaginary line, never on or 

 below it. 



Two tribes may be recognized. 



Table of Tribes. 



1. Apterous 3. 



Winged. 



Front wings with three cubital cells 2. 



Front wings with two cubital cells. 



Clypeus short, not much produced ; front legs in $ greatly 

 swollen, with tarsal joints 2-4 short, transverse or nearly, in 

 $ normal Tribe I., Planicepini. 



2. Clypeus much produced, fiat or at most only slightly convex, project- 



ing over the mandibles ; front legs in °. usually normal, more 

 rarely much swollen Tribe II., Homonotini. 



