480 WILLIAM T. M. FORBES 



sends off a fine branch toward the basal angle; a second oblique and nearly even 

 fascia from three -fourths way out on costa to anal angle, obscurely joining the first 

 one below; well defined on inner side, but gradually shading into the pale apex. 

 Hind wing white. 18. mm. 



June to September. 



Mississippi Valley; east to western New York: Ithaca. 



Eastern race. Paler; the ground between the reticulations very nearly white; 

 oblique fascia much narrower, and darker brown, practically reduced to a couple 

 of anastomosing lines, with a strong branch extending to inner margin about a 

 third of the way out; outer fascia farther out, excurved and connected to the inner 

 one by irregular brown reticulations. 



Maine to western Pennsylvania. 



38. ARGYROTOXA Stephens 

 (Tortrix, in part) 



Similar to Tortrix, but with scale tufts on the fore wings, the tufts being only 

 a little raised, the one at the end of the cell perhaps most prominent; R, running 

 practically to the apex. 



Argyrotoxa is closely related to Peronea, which differs only in RS running clearly 

 to the costa; and which has a similar pupa. The species are superficially very 

 close, but have perfectly distinct genitalia. Larvae of the genus are known from 

 rose, oak, huckleberry and other foods. 



Key to the species 



1. Fore wing with a raised yellow discal spot 3. curvalana. 



1. Fore wing with discal spot inconspicuous. 

 2. Fore wing with a subterminal band. 



3. Subterminal band closely parallel to outer margin, leaving a narrow yel- 

 low margin 1. bergmanniana. 



3. Subterminal band more strongly curved, drawing away from margin 

 toward costa, where it is about as far from the apex as twice the width 



of an interspace 2. albicomana. 



2. No subterminal band 4. semipurpurana. 



1. A. bergmanniana Linnaeus. Bright lemon yellow; a brown transverse band 

 from a third of the way out on costa to before middle of inner margin; one from 

 two-thirds of the way out on costa to before anal angle, these two breaking into 

 orange reticulations below costa; a third contrasting dark band closely parallel to 

 the outer margin, leaving a narrow yellow margin; the wing sometimes suffused 

 with dull orange, leaving the margin and costal region pale. Hind wing white or 

 yellowish. 10-12 mm. 



Larva greenish white, with black head, cervical shield, and true legs; webbing 

 together the terminal leaves of rose. 



I am not quite sure this species really occurs in America, as the records may be 

 based on specimens of albicomana, which is very close. 



2. A. albicomana Clemens. Closely similar to A. bergmanniana, save for the 

 greater curvature of the subterminal band. 



Larva on rose. 



Distribution uncertain, from confusion with the other species. New York: North 

 Elba, Batavia, Rock City (Cattaraugus County), Ithaca, Albany, Rhinebeck, 

 Crugers, New York City, Staten Island. 



3. A. curvalana Kearfott. Rich tawny brown, leaving the base and outer margin 

 yellow, and a conspicuous longitudinally oval discal spot at lower angle of cell. 



Mississippi Valley. 



