pepsestae: tribe pepsini 117 



2. Flagellar segments without a distinct subbasal angulation; first flagellar 



segment about 2.2 as long as wide; basal vein margined with fuscous; point 

 of subgenital plate with a broad longitudinal groove beneath. 



1. pulcliripennis (Cresson) 



Flagellar segments each with a strong subbasal angulation on the inner and 



lower sides; first flagellar segment about 1.5 as long as wide; basal vein not 



margined with fuscous; point of subgenital plate without a groove, convex 



beneath, subspecies of papago 3 



3. Fore wing rather strongly infuscate; range: Florida. 



2c. papago floridanus, new subspecies 

 Forewing hyaline, with or without a fuscous spot 4 



4. Forewing with a large, distinct, fuscous spot; range: eastern United States and 



Canada 2b. papago anomalus Dreisbach 



Forewing subhyaline, with its apical third faintly infuscate; habitat: British 

 Columbia to Arizona 2a. papago papago (Banks) 



5. Subgenital plate pointed at the apex; hooks on sixth sternite slender. 



3. calipterus (Say) 

 Subgenital plate with a deep notch in its apex; hooks on sixth sternite stout. 



7. sayi Banks 

 FEMALES 



1. Cubital vein not reaching the wing margin (pi. 2, figs. 26, 27); radial vein not 



more strongly angled at its juncture with the second intercubital vein than 

 at its juncture with the third intercubital vein; clypeus with a small median 



apical transverse impression, pulchripennis group 2 



Cubital vein reaching the wing margin (pi. 1, fig. 9; pi. 2, fig. 28); radial vein 

 distinctly more strongly angled at its juncture with the second intercubital 

 vein than at its juncture with the third intercubital vein, variegatus 



GROUP 5 



2. Forewing hyaline, with a narrow but conspicuous fuscous band along the basal 



vein and nervulus, as well as a broad fuscous band beyond the middle of 



the stigma (pi. 2, fig. 26) 1. pulchripennis (Cresson) 



Forewing black, or hyaline with a broad fuscous area at the level of the stigma 

 but without a fuscous band along the basal vein and nervulus. Subspecies 

 of papago 3 



3. Forewing hyaline, with a broad fuscous area beyond the stigma (pi. 2, fig. 27) ; 



range: eastern United States and Canada. 



2b. papago anomalus Dreisbach 

 Forewing uniformly blackisli 4 



4. Punctures on mesopleuron separated by about 0.2 their diameter; punctures 



on second abdominal tergite separated by about 1.2 their diameter; range: 



British Columbia to Arizona 2a. papago papago (Banks) 



Punctures on mesopleuron separated by about 0.7 their diameter; punctures 

 on second abdominal tergite separated by about 3.0 their diameter; range: 

 Florida 2c. papago floridanus, new subspecies 



5. Body clothed with very dense, appressed, grey to yellowish pubescense which 



gives a hoary appearance; tip of forewing whitish ... 6. sericeus Banks 



Body clothed with moderately dense, appressed, grey pubescence which is 



rather inconspicuous; tip of forewing subhyaline 6 



6. Clypeus with a strong, broad, transverse preapical impression; legs, scape, and 



thorax blackish, subspecies of sayi 7 



Clypeus without, or with a small weak transverse preapical impression; legs, 

 scape, and often the thorax more or less rufous 8 



