440 William T. M. Forbes 



the principal reason for putting P. claypoleana in this genus rather than in Char- 

 lotta. Most of the moths are sealed with green. 



Key to the species 



1. Ground nearly white 7. obnigrana. 



1. Ground gray or greenish. 



2. A blackish angulate bar from middle of costa to end of cell, and thence to 



apex 3. crescentana. 



2. No continuous heavy dark bar. 



3. Costa and speculum white 4. naracana. 



3. Without broad areas of white. 



4. Bright green, marbled with black toward base as well as outward; male 



without sex-scaling on fore wing 6. moffatiana. 



4. Duller green or gray; male with black scaling on fore wing; very little 

 black at base of wing above. 

 5. Costa cut with an oblique dark gray fascia at middle; sex-scaling of 



fore wing below a small black patch 5. wsculana. 



5. Costa evenly powdery dull gray; sex-patch on fore wing below more 



diffuse, fuscous 2. willingana. 



4. A black dash in basal two-fifths of fold; no black sex-scaling. 



1. claypoleana. 



1. P. claypoleana Riley. Pale brownish gray, shaded heavily with sage green. 

 Inner half toward base green, with a well-defined outer boundary, crossed by a 

 black dash, which fades out at base; a black bar at base of inner margin. A green 

 shade from tip of basal area to below apex, crossed by one from middle of costa 

 almost to anal angle; both irregular and diffuse, and shaded with blackish where 

 they meet; the blackish area extending outwardly almost to the outer margin. 

 Hind wing mouse gray, with pale fringe. 16 mm. (Epinotla, En-armonia) . 



This is the most primitive species of the series, having very slight wing-tufting, 

 and the notch at the wing margin indistinct; but its appearance and larval habits 

 place it here. The sex-scaling is present on the parts of the fore and hind wing 

 which overlap, but it is concolorous and hardly visible. 



Typically the young larva bores in the petioles of expanding leaves of buckeye; 

 then deserts them, and feeds on the withered leaves; sometimes also in the flower. 



Mississippi Valley. 



2. P. willingana Kearfott. Pale dull gray, with a faint green tint showing 

 under the lens; shaded and mottled with contrasting dark shades. Wing-tufts 

 well marked; notch on outer margin strong. Fore wing with an area of fuscous 

 scales beneath, from Sc to R 4 ; hind wing with black scales on upper surface above 

 the hair pencil only; below, with a black costal streak almost reaching from base 

 to apex. 16 mm. 



June. Larva forming a gall in twig of Negundo, in May. 

 Maryland to western Canada and Kansas. 



3. P. crescentana Kearfott. Dull light gray, with a contrasting blackish band 

 which runs from middle of costa to end of cell, then turns abruptly, running to 

 the apex; half as wide at apex as at middle of costa. Sex-scaling slight, at 

 middle of costa of hind wing above and below. 17 mm. 



June. Larva with P. willingana in box-elder. 

 Maryland to Iowa. 



4. P. naracana Kearfott. Fore wing rather smoothly light olive green, with 

 some black and brown toward apex. Costa with a broad and irregular white area, 

 tapering to a point at apex; speculum mostly white. Sex-scaling on under side 

 of fore wing at middle of costa slight; hind wing without black scales, but with 

 a heavy brown hair pencil on upper side. 16-20 mm. 



