pepsestae: tribe pepsini 



41 



3. Female without preapical bristles on the under side of the fifth tarsal segment. 



Male unknown 3. coloradensis (Banks) 



Female with 3 to 10 preapical bristles on the under side of the fifth tarsal seg- 

 ment. Male with numerous specializations which should permit easy distinc- 

 tion from those of P. coloradensis (see their description under the species). 



6. nuperus (Cresson) 



4. Wings orange 5. nigricans, new species 



Wings subhyaline to blackish 5 



5. Flagellum black; male clypeus white or mostly white; inner orbit of female not 



tinged with orange 1. ncbulosus (Dahlbom) 



Flagellum orange; male clypeus black; inner orbit of female tinged with 

 orange 2. dakota (Cresson) 



Figure 14. — Localities for Priocnessus nebulosus. 



1. Priocnessus nebiilosits (Dahlbom) 



Plate 1, figure 4 



Priocnemis nebvlosus Dahlbom, 1843, Hymenoptera Europaea, vol. 1, p. 96. 



Type: 9 , South Carolina (Lund). 

 Pompilus (Agenia) pulchrinus Cresson, 1867, Trans. Amer. Ent. Soc, vol. 1, 



p. 126. Lectotype: cf, West Virginia (Philadelphia). 

 Priocnemis subconicus Rohwer, 1911, Proc. U. S. Nat. Mus., vol. 40, p. 556. 



Type: ? , Lawrence, Kans. (Washington). 

 Priocnemis leibyi Brimley, 1928, Journ. Elisha Mitchell Sci. Soc, vol. 43, p. 203 



(new synonymjO- Type: c?, Edgecombe County, N. C. (Raleigh). 



Male: Forewing 6.5 to 9.5 mm, long; clypeus rather weakly convex, 

 its apical margin with a weak median tooth, its lateral margin with an 

 impressed flange that is widest apically; flagellar segments without 

 a longitudinal groove ; middle and hind coxae not unusually enlarged ; 

 hind trochanter without an apical tubercle; subgenital plate tongue- 

 shaped, its median longitudmal raised area a narrow ridge which is 



