Lepidopteka of New York and Neighboring States 643 



forming a costal triangle, but usually a distinct marginal band. Hind wing 

 dark yellowish fuscous, the tuft light brown and variable in distinctness. Hind 

 tibiae white at base, dull brown outwardly; metatarsi brown-tipped. 22 mm. 

 (marginidactyla Haworth. ) 



Common in June, flying into July. The caterpillar bores in the stems of yar- 

 row, in the fall, hibernates when half-grown, and feeds more or less exposed in 

 the crown of the plant, in the spring. It is green, with three pairs of white stripes, 

 the subdorsal being the strongest. When half-grown, it has purple-brown stripes. 

 The secondary hairs (or possibly enlarged skin-granulations) are minute; the 

 primaries simple, iv and v separate, vi of two setae. It is also reported on leaves 

 of Senecio. 



Generally distributed. New York: Peru, Newcomb, North Creek, Black Brook, 

 vicinity of Buffalo, Bock City and Vandalia (Cattaraugus County), Potter Swamp 

 (Yates County), Portage, Ithaca, Karner, Albany. 



II. Hind wing with a small tuft more than three-quarters way out, rarely 

 absent; and no distinct one at apex; fore wing with scattered black marginal 

 scales, but no tuft; head as before. Larva unkncncn. 



2. P. Carolina Kearfott. Frontal tuft and palpi long. Ochre yellow, fore wing 

 with a little darker dusting; costa dusted with black from one-third to three- 

 fourths way out; dark dots below costa at one -third and on lower lobe just 

 before the cleft. Terminal line blackish brown. A lighter brown line- in base 

 of fringe, the rest of the fringe slightly purplish. Dark specimens with the 

 usual pattern of the genus in brown. Hind wing slightly pinker, with tuft very 

 small or absent. Legs nearly concolorous. 18-26 mm. 



End of May to September. 



New Jersey; Valley of Black Mountains, North Carolina; Utah; California. 



3. P. edwardsii Fish. Tawny red-brown, costa blackish on basal two-thirds; 

 triangle black-brown, followed by a white streak and a white bar in the costal 

 fringe. Subterminal line white, with a blackish shade before it, preceded by dark 

 streaks or shades on the costa and at the middle of the first lobe. Fringes black 

 and white. Hind wing red-brown or chocolate brown, with a smallish tuft four- 

 fifths way out on the third feather. 19-29 mm. 



May to August. 



Quebec to North Carolina and the Pacific. 



4. P. auriga Barnes and Lindsey. Dark brownish gray with normal markings 

 (as in P. edwardsi) . Inner margin of third feather with a triangular tooth, the 

 scales successively shorter outward. Abdomen with oblique pale and dark stripes 

 above and longitudinal ones below. 18 mm. 



May to September. 



New York to North Carolina. New York: Ithaca. 



P. petrodactyla, of the Arctic region, belongs to this group. White, dusted 

 with gray-brown; terminal line gray; fringes white, slightly darker outwardly on 

 hind wing. No triangle of fore wing. Legs gray. Tuft very weak or absent. 



III. Tuft on inner margin distinct, at middle of third feather; palpi and 

 frontal tuft short. (Platyptilia; Fredericina Tutt) . 



5. P. tesseradactyla Linnaeus. Ash-gray, dusted with white, and somewhat shaded 

 with brown. A white subterminal line across both feathers, and a faint trace of 

 the dark costal triangle, opposite the bottom of the notch, with a small white 

 bar beyond it; a few spatulate black 'scales on inner margin. Hind wing darker, 

 with a rather diffuse tuft of black scales. 15 mm. (Frederioma Tutt.) 



May. Caterpillar boring in stem and flowers of Gnaphalium, hibernating part- 

 grown, and pupating upright in the boring, the pupa normally emerging. Larva 



