488 William T. M. Forbes 



391/2- TORTRICODES Guenee 



Similar to Peronea. Palpi somewhat weaker and down-curved; tongue weak in 

 our species, typically obsolescent. Fore wing with R 5 running to apex. Hind wing 

 with M 3 and CUi completely united; R and M x long-stalked. 



1. T. fragariana Busck. Ash gray; base somewhat darker, its outer boundary 

 strongly exeurved and angled over cell; median fascia but little darker, strongly 

 oblique, its inner boundary strongly extended in, in fold, and its outer boundary 

 dentate. Hind wing smoky. Wings narrower and more lanceolate than in Peronea, 

 though less so than in the type of Tortricodes. 



August. Larva on strawberry. 



New York to the Pacific coast. New York: Ithaca. 



40. CNEPHASIA Curtis 

 (Sciaphila, etc.; Tortrix, Capua, in part) 



Very close to Tortrix; fore wing usually more pointed, with extended apex and 

 convex costa, smoothly scaled; palpi beaklike, often long. Venation like that of 

 Tortrix, but with R and M ; of hind wing stalked (fig. 239). 



As denned here this is a heterogeneous group, apparently related to the lower 

 members of Tortrix. Venational aberrations occur with R and M t free, but they 

 can generally be identified by having longer and more pointed wings than Tortrix. 



Key to the species 



1. Silvery white, immaculate 1. argentana. 



1. Cream white, a little shining, immaculate 2. osseana. 



1. Tawny brown to olivaceous, with a more or less distinct oblique fascia. 



2. Expanse over 18 mm. Arctic-alpine . . .3. mceschleriana. 



2. Expanse under 15 mm. Generally distributed. 



3. A transverse subterminal fascia 4. listerana. 



3. A subterminal spot on costa only. 



4. Male with a brown costal fold; female with costal edge narrowly brown 



below, not transversely striate toward base 6. virescana. 



4. No costal fold; the costal edge pale, and with a few slight transverse 

 striations in both sexes ; smaller 5. peritana. 



I . C. argentana Clerck. No costal fold. Fore wing and thorax silver white, on a 

 fuscous base, becoming fuscous gray when rubbed; hind wing duller and yellower. 

 25 mm. (Argyroptera Duponchel.) 



July. 



Europe ; Truro, Nova Scotia ; Quebec ; Colorado, and west. New York : Trenton 

 Falls. 



2. C. osseana niveosana Packard. No costal fold. Cream white, somewhat shin- 

 ing; the wings less pointed then in A. argeritcma. 20 mm. (Ablabia, Hiibner). 



The larva forms a tube under stones and trash, and feeds on various low plants. 

 The moth flies in June. 



Labrador to Alaska, and southward in the Rocky Mountains. New York: Lewis 

 County (Hill, determined by Fernald). 



3. C. moeschleriana Wocke. No costal fold; usually with R 4 and R-, free; rarely, 

 shortly stalked. Sometimes with R and M, of hind wing free. Light yellow, usually 

 suffused with dull olive, red-brown, or reddish fuscous; with a strongly oblique 

 brown median fascia and a spot on the costa near apex, obscure in suffused speci- 

 mens, (gelidana Moeschler ; Tortrix, Capua) . 



April; August. 



Arctic ; and on Mount Washington, New Hampshire, and other alpine summits. 



