PSYCHE 



VOL. XXVI OCTOBER. 1919 No. 5 



THE NEARCTIC PSAMMOCHARIDS OF THE GENUS 

 APORINELLUS BANKS. 



By J. Bequaert, 

 American Museum of Natural History, New York City. 



On one of the collecting trips made this summer with Prof. Wil- 

 liam M. Wheeler, in the vicinity of Boston, I collected a little 

 Psammocharid which has proved to be an undescribed species of 

 Aporinelhis. In comparing this specimen with Mr. Nathan Banks' 

 extensive collection of Psammocharids I have found another 

 undescribed member of the same genus. Descriptions of both 

 forms are given herewith, together with a brief review of the group. 

 I am much indebted to Mr. Nathan Banks, of the Museum of 

 Comparative Zoology, Cambridge, Mass., for the loan of rich ma- 

 terial containing many types and for valuable bibliographic help. 



The genus Aporinellus Banks^ includes small Psammocharinse 

 with the propodeum smooth, emarginate behind when seen from 

 above, its posterior angles conical, sharp or obtusely rounded at the 

 apex. Thorax convex above, the pronotum not flattened and 

 shorter than or about the length of the mesonotum. The head is 

 feebly flattened antero-posteriorly ; the anterior margin of the 

 clypeus straightly truncate. Tarsal comb of the fore legs well 

 developed; the tibiae and tarsi otherwise feebly spinose. Claws 

 with a tooth about the middle of their length. There are no long 

 erect hairs on the cheeks, gula, coxje and propodeum. Fore wings 

 with two closed cubital cells; the transverse median reaches the 

 media before the origin of the basal vein; in the hind wings the 

 transverse median ends before or close to the cubitus. 



Aporinellus is represented by several species throughout the 

 United States and also exists in Mexico; whether the genus occurs 

 in Canada is not known. It is, however, probable that its range 



» Journ. New York Ent. Soc. 19, 1911, p. 223. 



