LEPIDOPTERA OF NEW YORK AND NEIGHBORING STATES 321 



The family as it now stands is undoubtedly heterogeneous, being 

 comprised of various reduced Gelechioidea, with perhaps a couple of 

 genera which really belong to other superfamilies. The forms with 

 1st A preserved, or with a primitive pupa, are evidently correlated 

 with the CEcophoridffi ; others, like Ithome, seem to be derived from the 

 Gelechiidse by reduction; Batrachedra and Synallagma are most doubt- 

 ful in position. A few genera of other families have been added to the 

 key for convenience. 



Key to the genera 



1. Hind wing immaculate; maxillary palpi minute, close-scaled. 

 2. Fore wing with one or more veins lost. 



3. Cell set obliquely in the wing (tig. 186), squarely truncate at end, between 

 R 1+5 and Cu 1; cubital branches almost invariably running straight across 

 to dorsal margin, much shorter than M 3 . 

 4. Fore wing with R! and R 5 stalked; hind wing narrow -lanceolate. 



12. Blastodacna. 

 4. R, and R G completely united; hind wing linear (figs. 186, 190). 



13. Batrachedra." 



3. Cell central in the wing, the closing vein strongly oblique and nearly 

 parallel to the dorsal margin from M 3 to Cu 2 ; M 3 to Cu 2 rather evenly 

 spaced, subequal, and parallel. 



4. A radial vein lost; only four veins running to costa; fore wing falcate. 



15. Synallagma. 



4. One or more dorsal veins absent; Rj always present. 

 5. R 3 more or less stalked ; Mj often stalked. 

 6. Wings broad; hind wing lanceolate and slightly trapezoidal, with 



two M's lost, and M 3 connate with Cu^ (Gelechiidee Helice.) 



6. Wings linear; hind wing with all veins preserved. 



( Heliodinidse Erineda. ) 



5. R 3 free; Mj stalked 11. Chrysopeleia. 



2. Fore wing with complete venation (cell always central, with oblique end). 

 3. M! stalked (fig. 185). 



4. Scape of antenna as long as width of head, without a pecten; antenmp 

 longer, more slender. Fore wing with a silver streak in the apex; Cu- 

 arising less than three-fourths way out on the cell; M 2 stalked (fig. 



185 ) 14. Cosmopteryx. 



4. Scape half as long as width of head, pecten variable; antennae usually 

 only four-fifths as long as fore wing, fore wing without a white streak 

 in the apex; with Cu 2 arising more than three -fourths way out. 

 5. Fore wing with heavy, raised, metallic tufts; Mj stalked nearly to 



apex ; M 2 free 4. Stilbosis. 



5. Fore wing with small, inconspicuous tufts, or none, M. i shortly stalked 

 unless M 2 is also stalked. 23 



6. Wing dull, linear; pecten strong 7. Pyroderces. 



6. Wing shining, lanceolate ; pecten absent. 

 9 Stagmatophora, 10. Ithome. 



22 Coleophora may be sought here, but is distinguished by its antennae thrown forward 

 in repose, its slender fore tibia without epiphysis at the middle ; its upper spurs of the 

 hind tibia above the middle, and its more angular-looking palpi. 



a3 Laverna sexnotella also normally has MI very short-stalked, but the second segment 

 of the palpus is much thickened, the wing has metallic tufts, and there is a weak pecteii. 



11 



