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U. S, NATIONAL MUSEUM BULLETIN 2 09 



Figure 3L — Localities for Cryptocheilus hesperus. 



1. Cryptocheilus hesperus (Banks) 



Priocnemis hesperus Banks, 1915, Canadian Ent., vol. 47, p. 401, [?]. Type: 



9 , Stanford University, Calif. (Cambridge) . 

 Cryptocheilus atratus Banks, 1919, Bull. Mus. Comp. Zool., vol. 63, p. 247, cf, 9 . 



Type: 9, Glenwood, Calif. (Ithaca). 



Male: Forewing 6 to 8.5 mm. long; front view of clypeus with the 

 apex weakly arcuately concave; median notch of sixth sternite deeply 

 V-shaped with the bottom rounded; subgenital plate tongue-shaped, 

 with a median longitudinal rounded ridge that is stronger basally and 

 gradually weaker to the apex, the longitudinal ridge with a crest of 

 short, dense black hairs; margin of subgenital plate with a fringe of 

 short, dense black hairs and bristles. Colored as in the female. 



Female: Forewing 6 to 12.5 mm. long; clypeus in side view strongly 

 convex, in front view with the apex strongly and broadly arcuately 

 concave; mandible (when not eroded) about 0.85 as long as the clypeus 

 is wide, its apical tooth rather broad; propodeum and upper part of 

 metapleuron with close, sharp, transverse wrinkles (without or with 

 a few indistinct wrinkles in the male and in both sexes of the other 

 Nearctic Cryptocheilus). 



Black. Body pubescence blackish; wings blackish, the apical 

 0.23 ± of the forewing and the apex of the hind wing deeper black. 



This species is very closely related to C. terminatum, differing in the 

 possession of median crest of hair on the male subgenital plate and in 

 having the female propodeum and metapleuron transversely wrinkled. 



Specimens (26 6^, 100 9): From California (Alameda County, 

 Antioch, Atascadero, Benicia, Berkeley, Cajon Pass in San Bernar- 

 dino County, Chile Bar in Eldorado County, Clayton, Concord, 

 Davis Creek in Modoc County, Dixon, Dos Palos, Eldridge in Sonoma 

 County, Felton, Harris, Laguna Beach, La Jolla, Lemoncove, Lindsay, 



