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U. S. NATIONAL MUSEUM BULLETIN 2 09 



pear as summer develops. The non-Nearctic species of this subgenus 

 that have been studied are the Chilean Salius (Priocnemis) disperti- 

 tius Kohl 1905; the Colombian Priophanes moesta Banks 1945; and 

 the European Priocnemis mimulus Wesmael 1851, Sphex fusca Fabri- 

 cius 1775, and Calicurgus vulgaris Lepeletier 1845. These are all new 

 combinations with the subgeneric name. 



Key to the Nearctic species of the subgenus Priocnemissus 



1. Abdomen black; male with apex of clypeus strongly concave; rather slender 



species 1. minorata Banks 



Abdomen largely or entirely red (rarely almost all black); male with 

 apex of clypeus truncate; stout species 2 



2. Abdomen black apically; thorax and head of female partly dull ferruginous; 



male subgenital plate with the hairs about 0.6 as long as the width of the 



plate 2. nigripcs (Cresson) 



Abdomen red to the apex (rarely almost entirely black) ; thorax and head of 

 both sexes entirely black; male subgenital plate with the hairs about 1.3 as 

 long as the width of the plate 3. oregona Banks 



1. Priocnemis (Priocnemissus') minorata Banks, new combination 



Figure 1,c; Plate 1, figure 7 

 Priocnemis conicus "Say," as misdetermined by authors. 



Priocnemis minorata Banks, 1912, Canadian Ent., vol. 44, p. 197, [ ? ]. Lectotype: 

 9 , Great Falls, Va., April 20 (Cambridge). 



Male: Forewing 6 to 10 mm. long; clypeus rather flat, short, and 

 with the apex arcuately emarginate; subgenital plate tongue-shaped 



Figure 40. — Localities for Priocnemis miiwrata. 



with a broad shallow notch in its apex, its hairs erect with their apices 

 curved backwards, or in the case of the apical bristles curved mesad, 

 averaging about 0.8 as long as the width of the subgenital plate. 



Black. Wings faintly to distinctly infuscate; abdomen black, but 

 sometimes with a reddish tinge. 



Female: Forewing 7 to 12 mm. long. 



