LEPIDOPTERA OF NEW YORK AND NEIGHBORING STATES 263 



3. No black antemedial oblique fascia running to costa; or else with ground 



powdery gray to base, and fascia diffuse. 

 4. Ground dominantly luteous; pale moths. 



5. Ground very slightly mottled, with three to six black dots. 



35. branella. 



5. Streaked with a darker shade of light gray 34. arenella. 



5. Dusted and mottled with yellow-brown and black; tending to diagonal 



markings 33. nundinella. 



4. Ground dark, or so heavily dusted as to appear dark gray. 



5. Dorsum of thorax luteous, contrasting with the blackish tegulae. 

 6. Sides of disc of thorax and third joint of palpi black. 



(12). ochreostrigeUa. 

 6. Disc of thorax wholly yellowish white; palpi yellow, banded with 



black 12. hibiscella. 



5. Dorsum of thorax evenly colored, or nearly so, dorsal half of fore 



wing not contrastingly pale. 

 6. Outer discal dot black, ocellate with white or yellowish. 



13. discoocellella. 

 6. Outer discal dot not ocellate, or else with the center pale. 



7. Fore wing markedly darker-streaked on the veins, at least 



outwardly, and not notably powdery. 

 8. Stripes black on luteous, and fine in the cell. 



10. ochreosuffusella. 

 8. Stripes blackish on fuscous brown, not contrasting; usually 



with a thick bar in outer part of cell 11. fluvialella. 



7. Not dark-streaked on veins; ground often powdery. 



8. A large part of scales with fine black tips and longitudinal 

 lines on a gray base, producing an almost evenly gray 

 effect; the wing under a lens apparently more finely pow- 

 dered than usual 13. anarsiella. 



8. Scales mostly unicolorous, or broadly black- or white-tipped. 

 9. Crisply powdered with black or dark gray on light blue- 

 gray or white; often white-shaded toward costa; or with 

 broad areas of light bluish-gray. 

 10. A contrasting blackish longitudinal dash in outer part 



of wing ( 35 ) sequax. 



10. No such marking. 



11. Antemedial line represented by two fine strongly out- 

 wardly oblique lines to costa, contrasting when costa 

 is whitish; very obscure or even obliterated when 

 costa is dark brown. 



12. Costa heavily shaded with whitish; larva on Robinia. 



25. pseudoacaciella. 

 12. Costa concolorous, or brown; larva on Prunus. 



26. serotinella. 

 11. Antemedial line nearly transverse and thick; rarely 



absent. 

 12. Postmedial line whitish, contrasting, nearly straight 



( small species ) 32. tephriasella. 



12. Postmedial strongly bowed out in middle, when dis- 

 tinct. 



13. Second segment of palpi solid black, except extreme 

 tip; tuft in fold preceded by a well-marked yel- 

 low bar; ground suffused with blue-gray except 

 at costa 23. nigrimaculella. 



