448 NEW TOKK STATE MUBEUM 



c The proximal cross vein between Ri and Rs op- 

 posite the proximal cross veins between Rs 

 and M; fore wings I'arely with more than .two 

 accessory veins arising from R3; cheeks yel- 

 lowish 1 infumata 



cc The proximal cross veins between Rj and R3 

 distinctly distad of the proximal cross vein 

 between Rs and M, and which is generally 

 opposite the first fork of media; fore wing 

 never with less than three accessory veins 



arising from R3 ; cheeks black 2 fuliginosa 



bb Head black in front with a broad orange band 



behind 3 nevadensis 



aa Body either black or ferruginous, wings pale fer- 

 ruginous, or pale fuscous 

 6 Head black in front, with broad orange baud 



behind ; body black 4 m o r r i s o n l 



bb Head yellow, orange, or reddish, with or without 

 dark markings; body never quite black 



c Front of head without dark stripes oamericaua 



cc Front of head marked with black stripes, or 

 suffused with fuscous 

 d Antennae stout, ht^ad with two black stripes; 



femora yellowish; eyes normal Cbifasciata 



dd Antennae slender; head with a long median 

 line, suffused with fuscous in front; femora 

 blackish fuscous; eyes unusually prominent 7 c h i 1 e n s i s- 



DESCRIPTION AND GEOGRAPHIC RANGE OF SPECIES 



1 S. infumata Newman 



1838 S 

 1853 S 

 1861 S 

 1863 S 

 1863 S 

 1892 S 

 1897 S 

 1901 S 



alis infumata Newman, Ent. Mag. 5:500 

 alls infumata "Walker, Cat. Brit. Mus. Neur. p.l95 

 alis infumata Hagen, Synopsis Xeur. N. Am. p. 188 

 alis infumata Hagen, Ent. Soc. Phila. Proc. 2:181 

 alis infumata Walsh, Ent. Soc. Phila. Proc. 2:261 

 alis infumata Banks, Am. Ent. Soc. Trans. 19:357 

 alis concava Banks, Am. Ent Soc. Trans. 24:22 

 alis infumata Needham, N. Y. State Mus. Bui. 47, p.542^ 

 pi. 29 



Black; head a little narrower than the prothorax, but not 

 narrowed iHisteriorly, between the eyes convex to concave, caudal 

 half of head with ferruginous and shining streaks and spots^ 

 similar spots between the eyes, more or less conspicuous; an- 

 tennae black, rather slender; prothorax rounded on the anterior 

 angles, the sides of dorsal aspect with a few impressed points; 

 legs and feet black; wings nearly black, the veins thick and 



