206 



U. S. NATIONAL MUSEUM BULLETIN 216 



There is a rearing from a "tortricid," Batholomew River, N. B., 

 1939, by the Canadian Forest Insect Survey. 



In our experience, the species is common in open, semidesert areas 

 of the west, where there are grasses and shrubs. At Leevining, Calif., 

 we found it abundant in Ceanothus bushes. In the East it is rare, 

 and restricted to Canadian, Hudsonian, and Arctic areas. 



This species is transcontinental in the Hudsonian and Canadian 

 zones, occurring in rather dry open areas. It is rare in the East. 



18. Exochus dentifrons, new species 



Figure 192, i 



Front wing 4.5 to 5.2 mm. long; frons below the middle with a 

 median, high lamellate carina or tooth that almost touches the inter- 

 antennal process of the face; nervulus beyond basal vein by about 0.4 

 its length; second abdominal tergite with rather coarse strong punc- 

 tures, the interspaces of which are about 0.7 their diameter, the 

 punctures evenly distributed but lacking from the apical 0.15 of the 

 tergite. 



Figure 122. — Localities for 

 Exochus dentifrons. 



Male: Black. Upper 0.4 of face pale yellow except for a median 

 ventral notch in the yellow area; yellow spot near top of each eye, 

 the spots elongate, a little convergent posteriorly, close to hind ocelli, 

 and a little separated from margin of eye ; mandible and palpi mostly 

 pale brown; tegula pale yellowish; legs fulvous, the basal 0.2 of tibiae, 

 apical 0.12 ± of femora, and much of the front and middle coxae and 

 trochanters, pale yellowish ; tarsi stramineous ; front and middle coxae 

 basally blackish; hind coxa entirely blackish. Described from a single 

 specimen. 



Female: Black. Face, clypeus, and front part of cheek pale yellow, 

 with a median vertical mark on face, a transverse mark between 

 clypeal foveae, and apex of clypeus blackish, these dark marks often 



