pepsinae: tribe pepsini 109 



1. Calicurgus hyalinatus Fabriciue 



Male: Fore-wing 4.5 to 6.5 mm. long. Black. Tibial spurs and 

 a large spot on last tergite white; clypeus, hind margin of pronotum, 

 and apex of fore coxa marked with white in some subspecies; femora 

 and tibiae with various amounts of rufous; wings hyaline, the apical 

 margin of the forewing faintly infuscate. 



Female: Forewing 5.5 to 8.5 mm. long. Black. Femora, tibiae, 

 and abdomen with various amounts of rufous according to the sub- 

 species; wings hyaline, the forewing with a large subapical fuscous 

 spot and in some subspecies a narrow infuscation along the basal 

 vein and the apical margin weakly infuscate. In the subspecies 

 excoctus the subapical and the basal infuscate areas are confluent. 



This species is Holarctic, with four subspecies in the Nearctic 

 Region. The typical subspecies (C hyalinatus hyalinatus Fabricius 

 1793) has a wide range in the Palaearctic Region. It is rather similar 

 to the Nearctic C. hyalinatus horealis, differing in the male in the re- 

 duction or loss of the white markings on the clypeus, pronotum, and 

 fore coxa, and in the slightly different distribution of the rufous color 

 on the femora and tibiae; and differing in the female in having the 

 black on the legs averaging a little more extensive and in the forewing 

 a tendency toward more infuscation along the basal vein. 



In the eastern half of the United States this is a conspicuous and 

 common species during middle and late summer among low dense 

 vegetation of moist woods. 



Keys to the Nearctic subspecies of Calicurgus hyalinatus 



MALES 



1. Femora and tibiae of middle and hind legs entirely black. 



Id. hyalinatus excoctus, new subspecies 

 Femora and tibiae of middle and hind legs more or less ferruginous. (Males 

 of the following three subspecies cannot be separated with certainty.) 



la. hyalinatus borealis (Banks) 



lb. hyalinatus alienatus (Smith) 



Ic. hyalinatus rupex (Cresson) 



FEMALES 



1. Abdomen entirely black; forewing with an infuscate spot that occupies more 



than 0.5 its area; habitat: Arizona and New Mexico. 



Id. hyalinatus excoctus, new subspecies 



Abdomen with at least the basal two segments ferruginous; forewing with an 



infuscate spot that occupies about 0.25 its area (pi. 1, fig. 8) 2 



2. Hind femur more than half infuscate or entirely black; habitat: Canadian Zone. 



la. hyalinatus borealis (Banks) 

 Hind femur less than half infuscate to entirely rufous 3 



.3477!56— 57- 



