48 



U. S. NATIONAL MUSEXJM BULLETIN 209 



6. Priocnessus nuperus (Cresaon) 



Pompilus {Priocnemis) nuperus Cresson, 1867, Trans. Amer. Ent. Soc, vol. 1, 

 p. 118, 9- Lectotype: 9, Pennsylvania (Philadelphia). 



Male: Forewing 9.5 to 13 mm. long; clypeus very large, apically 

 strongly raised upward and outward, its apical margin with a median 

 apical tooth; posterior side of median flagellar segments with a longi- 

 tudinal groove, within which is a longitudinal row of enlarged special- 

 ized setae; middle and liind coxae unusually large; hind trochanter 

 beneath with an apical tubercle Hke a blunt spine; subgenital plate 

 tongue-shaped, its median longitudinal ridge high, broad, flat-topped, 

 abruptly evanescent beyond the apical 0.75 of the subgenital plate. 



Figure 19. — Localities for Priocnessus nuperus. 



Kufous. Most of mandible, lateral third of clypeus, face, lower 

 corners of frons, broad hind orbits, knees, tibiae, and first to fourth 

 tarsal segments, orange or bright fulvous; flagellum brown, orange on 

 the central third and on the underside of the basal third; ocellar area, 

 a small mark above the antennal socket, under side of thorax, region 

 of plural sutures, back side of front and middle coxae, most of hind 

 coxa, upper side of middle and hind trochanters, and base of first 

 tergite, blackish, the extent of the blackish markings variable; wings 

 uniformly dark brown. 



Female: Forewing 13 to 17 mm. long; hind tibia with its dorsal 

 teeth very strong and erect, and the bristles in its dorsolateral row 

 long, about 0.8 as long as the distance between their sockets; last seg- 

 ment of tarsi with about 3 to 8 preapical bristles beneath. 



Rufous. Flagellum with the second, third, and adjacent ends of the 

 first and fom-th segments yellowish; flagellum beyond the basal 0.3 

 of fourth segment blackish; ocellar area, much of back side of head, 

 thorax except for top of pronotum, mesoscutum, scutellum, postscu- 



