ICHNEUMON-FLIES OF AMERICA: 1. METOPIINAE 



211 



This group contains the Nearctic species described below, which is 

 known only in the male sex. A female specimen, from Venezuela, 

 may represent the other sex of the same species or may belong to a 

 second species of the group. 



20- Exochus sulca 1 us, new species 



Figures 188,i; 189,g; 193,a 



Male type: Front wing 4.0 mm. long; punctures on frons separated 

 by about 1.5 their diameter; second lateral area of propodeum with 

 about five hairs apically; punctures on second abdominal tergite 

 separated by about 4 times their diameter; apex of clasper strongly 

 depressed so that from above it appears obliquely truncate. 



Very pale stramineous. Spot enclosing ocelli and expanded on 

 occiput, blackish; scape and flagellum blackish; mesoscutum blackish, 

 its hind margins and a pair of short, obscure median lines stramineous ; 

 postscutellum and disc of scutellum blackish; propodeum with a 

 large, median equilateral blackish triangle, the base of the triangle 

 on the base of the propodeum; basal 0.18 of hind tibia infuscate; 

 front face of hind tibia with a faintly infuscate stripe; abdomen 

 blackish, pale stramineous below, on the base and side of the first 

 tergite, side of the second tergite, and broad apicolateral corner, broad 

 lateral edge, and narrow apical edge of third and following tergites. 



Type: cF, Moorestown, N. J., July 21, 1939, H. and M. Townes 

 (Washington, USNM 63656). 



Figure 125. — Locality for Ex- 

 ochus sulcatus. 



We have also a female specimen (San Esteban, Venezuela, Dec. 20, 

 1939, P. J. Anduze (Townes)) which may belong to this species. It 

 differs from the male only in being a little more sparsely punctate and 

 in minor color characters. This is the specimen that was used for 

 the figures cited above. 



