374 



U. S. NATIONAL MUSEUM BULLETIN 216 



Figukb 164. — Localities for 

 Pseudorhyssa ruficoxis. 



coxa and trochanters, under side of middle coxa and trochanters, 

 and epipleura, white or ivory; clypeus ferruginous; front side of front 

 and middle femora and tibiae more or less whitish or ivory; front and 

 middle tarsi infuscate, paler in front; front and middle legs fulvous 

 except as described otherwise; hind coxa fulvous or sometimes black, 

 its lower edge ivory; trochanters ivory below, fulvous above; hind 

 femur brownish, more or less fulvous below and at base, darker 

 brown or blackish at apex; hind tibia fuscous, ivory to brown below 

 except apically; hind tarsus fuscous; narrow apical margin of abdom- 

 inal tergites sometimes stained with ferruginous; wings hyaline. This 

 description is based on American males. We have seen none from 

 Europe. According to the literature these usually have the coxae 

 mostly blackish. 



Female: Black. Face with two large, poorly defined, vertical 

 whitish areas; mandible with a whitish area at base; clypeus dusky 

 ferruginous; scape whitish or fulvous below; labial palpus brown; 

 maxillary palpus stramineous; hind corner of pronotum and tegula, 

 white; front and middle coxae fulvous or blackish brown, whitish 

 at apex in front; trochanters more or less whitish, fulvous dorsally; 

 front and middle femora and tibiae fulvous, more or less whitish in 

 front; front and middle tarsi light brownish fulvous; hind coxa 

 fulvous to blackish; hind femur fulvous, its apex infuscate; hind tibia 

 and tarsus fuscous brown, the tibia a little paler at base and beneath, 

 except toward apex; narrow apical margin of second to fourth tergites 

 usually stained with ferruginous; epipleura white; wings hyaline. 

 American specimens have the coxae fulvous, except for the whitish 

 apical marks. In European specimens the coxae are usually blackish, 

 but sometimes fulvous. 



Specimens (8 c?, 319): From Alberta (Waterton); Arizona (near 

 Alpine) ; California (Camino, Echo Lake at 7,400 ft., Fish Camp, near 

 Glacier Point in Yosemite Park, Glen Alpine Creek at Lake Tahoe, 



