LEPIDOPTERA OF NEW YORK AND NEIGHBORING STATES 299 



Key to the species 



1. Fore wing with a longitudinal stripe through the middle from costa near 

 base to apex. 



2. Costa clay-color, contrasting; larva on juniper 6. juniperella. 



2. Costal area about half covered with black mottling; on sweet gum. 



12. dorsivittella. 

 2. Costa very dark, concolorous with median area, the black streak lying in 



the fold; on alder 15. alnifructella. 



1. Fore wing without longitudinal stripe, or (obliquistrigella) with a slight one 



on the apical half only. 

 2. Blackish and black with a little white scaling and an angulate, white 



postmedial band. 

 3. Head and inner margin dark-duster and shaded on a luteous ground. 



5. piceaella, variety obscurella. 



3. Head and inner margin blackish, concolorous 14. nigra. 



2. Not dominantly brownish black. 



3. Third joint of palpus white, immaculate 2. variella. 



3. Third joint of palpus with two black spots, at least. 

 4. Fore wing more or less yellowish. 



5. An oblique antemedial fascia running from costa to fold. 



6. Ground decidedly tinted with yellow; head straw yellow. Larva 



on spruce. 



7. Fasciae broken, leaving the series of tufts in the cell showing 

 as black dots about as conspicuous as those in the fold. 



3. coniferella. 



7. Ground duller; fasciae covering the series of tufts in the cell. 



4. piceaella. 

 6. Ground hardly tinted with yellow; head cream color. 



7. Fasciae separate; on arbor vitae 5. thujaella. 



7. Second fascia running out in cell to join third; on juniper. 



7. gibsonella. 



5. A slight yellowish-white antemedial shade only; cell-tufts minute 

 or absent; second segment of palpus yellowish white. 



1. apicitripunctella. 

 4. Fore wing not tinted with yellowish. 



5. Fore wing with a strong, oblique, white streak at a third way out. 



13. cristatella. 

 5. No strong white costal streak one-third way out. 



6. A black dorsal patch near base 10. robiniella. 



6. No such patch. 



1 7. Male with hair-pencil toward inner margin; palpus with second 

 segment mostly blackish; first antemedial fascia short; larva 



on oak 11. quercivorella. 



7. Hair-pencil not reported; palpus with second segment heavily 



dusted with gray; first fascia reaching to fold. 

 8. Ground brown, suffused on a cream-colored base; larva on 



arbor vitas 5. thujaella. 



8. Blackish on cream; on juniper 7. gibsonella. 



7. No hair pencil; palpus with two black bars on second segment; 

 larva on thorn 9. cratcegella. 



I. Evergreen feeders, ground strongly yellowish. 



1. R. apicitripunctella Clemens. Pale yellow, shading into white; palpus with 

 second segment banded with yellow and white, third white with two black bars. 

 Antennae annulate, pale yellow and blackish. Fore wing with a brown shade on base 



