22 



U. S. NATIONAL MUSEUM BULLETIN 216 



1940, H. and M. Townes (Townes). 9, Jordon, Ont., Aug. 6, 1925, 

 C. H. Curran (Ottawa), d", Spring Brook, Pa., Aug. 25, 1945, H. 

 Townes (Townes). cf , Westmoreland County, Pa., July (Pittsburgh). 

 9, Wright, Que., July 6, 1933, G. S. Walley (Townes). 9, Glencarlyn, 

 Va., July 14, N. Banks (Cambridge). 



This species occurs in the Alleghenian fauna. Adults have been 

 collected from late June to late August. 



3. Chorinaeus excessorius Davis 



Figures 163,a; 178,d 



Chorinaeus excessorius Davis, 1897, Trans. Amer. Ent. Soc, vol. 24, p. 209; 9 • 

 Type: ?, Washington (Philadelpia) . 



Front wing 3.5 to 5.4 mm. long; face about 1.1 as high as the mouth 

 is wide in male, about 0.94 as high in female; median 0.6 of clypeal 

 margin weakly concave; mandible about 1.95 as long as wide in male, 

 about 2.0 as long as wide in female, its upper tooth only a little larger 

 than its lower tooth, its outer face with rather coarse punctures; 

 flagellum with about 34 segments in male, with about 29 segments in 

 female ; metapleurum with scattered hairs on its upper third ; front spur 

 of middle tibia about 0.75 as long as the hind spur; second segment of 

 middle tarsus about 2.5 as long as wide in male, about 2.25 as long 

 as wide in female ; second tergite with an indistinct longitudinal carina 

 just mesad of its spiracle, occupying its basal half; sculpture of second 

 tergite as coarse subadjacent punctures with a tendency to longitu- 

 dinal wrinkling between the punctures; apex of penis with 4 to 6 stout 

 setae on each side. 



Black. Face, Irons laterally to top of eye emargination, cheek, 

 temple next to cheek, clypeus, mouth parts, under side of scape and 

 pedicel, tegula, front and middle coxae and trochanters, apex of femora 

 and basal 0.2 of tibiae, pale yellow; front and middle coxae more or 

 less tinged with fulvous, especially in female; apex of hind femur and 



Figure 7. — Localities for Cho- 

 rinaeus excessorius. 



