Genus Hesperia 



Caterpillar. The caterpillar is much like those which have 

 been previously described, but is relatively much smaller. 



Chrysalis. The chrysalis has a somewhat blunt and not very 

 distinctly developed cremaster. 



(1) Hesperia domicella, Erichson, Plate XLVII, Fig. 19, $ 

 (Erichson's Skipper). 



Butterfly. Allied to the following species, from which it is 

 easily discriminated by the broad, solid white bands on both the 

 fore and the hind wings. Expanse, 1.25 inch. 



Early Stages. Unknown. 



H. domicella is found in Arizona, Mexico, 

 and southward. 



(2) Hesperia montivaga, Reakirt, Plate 

 XLVII, Fig. 1 8, 6 ; Plate VI, Fig. 35, chrys- 

 alis (The Checkered Skipper). 



Butterfly. --\te upper side is correctly 

 delineated in the plate. The under side of tenna, magnified 3 diam- 

 the fore wings is much paler than the upper ( 

 side, but with all the spots and markings of that side reproduced. 

 The hind wings are creamy-white, crossed by median, postme- 

 dian, and marginal irregular bands of ochreous, somewhat annular 

 spots. There is a triangular black spot at the anal angle of the 

 secondaries. Expanse, 1.15 inch. 



Early Stages. We know little of these. The caterpillar 

 probably feeds on malvaceous plants, as do most of the species 

 of the genus. 



The insect ranges from the Middle States to Arizona, and 

 westward to the Rocky Mountains. 



(3) Hesperia centaureae, Rambur, Plate XLVII, Fig. 13, $ 

 (The Grizzled Skipper). 



Butterfly. The upper side may easily be recognized by the 

 help of the figure in the plate. On the under side the wings are 

 darker than in the preceding species; the spots of the primaries 

 reappear on this side, the submarginal curved row of spots coa- 

 lescing to form a narrow white band, the white spot at the end 

 of the cell flowing around the dark spot, which it only partly in- 

 closes on the upper side, and forming an eye-like spot. The 

 hind wings are brown, scaled with green, and crossed by basal, 

 median, and marginal bands of quadrate spots. The fringes are 

 whitish, checkered with gray. Expanse, 1.15 inch. 



327 



