48 



U. S. NATIONAL MUSEUM BULLETIN 216 



PABT 3 



Figures 11-14. 



-Localities: 11 (left), Agrothereutes grandis; 12 (center, left), A. alutarius; 

 13 (center, right), A. montanus; 14 (right), A. pallipennis. 



Black. Scape of female brown in front; flagellum of female uni- 

 formly blacldsh; palpi dark brown; tegula black; coxae and first tro- 

 chanters of male black, of female ferruginous; second trochanters and 

 femora ferruginous, the apical 0.1 ± of the hind femur infuscate; 

 front and middle tibiae ferruginous, the middle tibia usually weakly 

 infuscate; front and middle tarsi brown, darker apically; hind tibia 

 and tarsus dark brown or black; wings weakly infuscate; thyridia and 

 narrow apical margin of second and third tergites with a ferruginous 

 tinge. 



The males at hand appear to belong with the female type, but have 

 the coxae and first trochanters black rather than ferruginous. This 

 is an imusual sexual difference and it may be that the males represent 

 a separate species. 



Type: 9, Fu-th River, British Mts., Yukon, July 27, 1956, R. E. 

 Leech (Ottawa). 



Para types: cf , Nome, Alaska, July 10, 1951, D. P. Whillars (Ot- 

 tawa), cf, Aklavik, Northwest Territories, June 30, 1956, E. F. 

 Cashman (Ottawa). cT, Coppermine, Northwest Territories, July 6, 

 1951, S. D. Hicks (Ottawa). 2 cf , Firth River, Yukon, July 31, 1956, 

 E. F. Cashman (Ottawa). cT, Rampart House, Yukon, July 19, 

 1951, J. E. H. Martin (Ottawa). 



This is an Arctic species, known from Alaska and northwestern 

 Canada. 



3. Agrolhereutes montanus, new species 



Figure 327,c 

 Male: Unknown. 



Female type: Front wing 5.2 mm. long; clypeus small, very strongly 

 convex; face mat, its central 0.3 weakly mat, rather convex, and with 



