pepsinae: tribe pepsini 27 



9. Subgenital plate with a mediolongitudinal carina or a median basal carinate 



process, its apical margin without a transverse carinate process ... 10 



Subgenital plate without a mediolongitudinal carina or a median basal carinate 



process, its apical margin with a transverse carinate process .... 13 



10. Subgenital plate strongly decurved 11 



Subgenital plate flat or nearly flat 12 



11. Antennal sensoria small, hemielliptical, impressed, markedly different from the 



surrounding integument; wings mostly blackish .... 7. venusta Smith 

 Antennal sensoria broad, as longitudinal stripes; wings mostly orange. 



8. marginata Palisot 



12. Apical edge of subgenital plate deeply notched .... 9. arizonica Banks 

 Apical edge of subgenital plate semicircularly convex . . 10. aquila Lucas 



13. Subgenital plate with an apical transverse carina and a low subapical trans- 



verse carina which extends to either side of a subapical median tooth. 



11. thisbe Lucas 



Subgenital plate with apical and subapical transverse carinae but without a 



median tooth 14 



14. Subapical carina of subgenital plate much shorter than width of subgenital 



plate, ending far from the lateral edges, strongly arcuate or angulate . 16 



Subapical carina of subgenital plate e.xtending nearly to the lateral edges, not 



strongly arcuate or angulate. subspecies of pallidolimbata ... 15 



15. Wings lemon yellow to yellowish brown; iridescent pubescence of head, body, 



and legs with a greenish sheen. 



12a. pallidolimbata pallidolimbata Lucas 



Wings fiery red to reddish brown; iridescent pubescence of head, body, and legs 



with a dark blue-green sheen .... 12b. pallidolimbata smitbi Hurd 



16. Subapical transverse carina of subgenital plate with a strong median angula- 



tion; wings mostly blackish 13. mexicana Lucas 



Subapical transverse carina of subgenital plate evenly arcuate; wings mostly 

 orange, subspecies of chrysothemis 17 



17. Width of subapical dark band on forewing considerably less than the length 



of the first plus the second flagellar segments. 



14a. chrysothemis chrysothemis Lucas 



Width of subapical dark band on forewing greater than the length of the first 



plus the second flagellar segments .... 14b. chrysothemis lucasii Fox 



FEMALES 



1. Front femur beneath with very long, bristlelike hairs 2 



Front femur beneath at most with a few short hairs 4 



2. Middle and hind femora with very long, bristlelike hairs; middle and hind 



tibiae each with an anterolateral and a posterolateral longitudinal groove 



extending nearly its length 9. arizonica Banks 



Middle and hind femora glabrous or nearly so; middle and hind tibiae with- 

 out longitudinal grooves, subspecies of Formosa 3 



3. Wings mostly orange la. formosa formosa (Say) 



Wings mostly blackish lb. formosa patloni Banks 



4. Spurs of middle tibia conspicuously curved near the apex, subspecies of 



ELEGANS 5 



Spurs of middle tibia straight or only slightly curved 6 



5. Hind tibia dorsally with very long, apically curved bristles on its entire 



length; wings mostly orange; flageilum black, brownish black, or rarely 



orange 6a. elegans cerberus Lucas 



Hind tibia dorsally with very long, apically curved bristles on only its basal 

 third; wings entirely black; flageilum orange. 6b. elegans elcgans Lepeletier 



