646 WILLIAM T. M. FORBES 



1. T. lobidactylus Fitch. Fore wing with basal half mixed clay -color, blackish, 

 and white, shading into solid blackish on outer half. Each feather with two 

 white bars; fringe blackish, white toward apex of costa, and with some white 

 scales in dorsal fringe. Hind wing dark. 15-20 mm. 



June. Larva on Solidago; green with ochreous head and some black points; 

 with subdorsal chitinous plates bearing setae i and ii, which are single and clubbed, 

 arising from a large brown chitinous plate; iv and v united; a few pale secondaries, 

 partly associated with the primaries. Pupa truncate, with four short anterior 

 horns, and subdorsal ridges reaching to fourth segment of abdomen, bearing setae 

 i and ii; green, marked with pink. The species is somewhat variable locally. 



Massachusetts to Florida. New York: Ilion, Ithaca, New York City. 



4. STENOPTILIA Hiibner 



Similar to Pterophorus in appearance, or with the lobes distinctly and very 

 obliquely truncate. Front with a tuft of scales, normally covering a strong horny 

 cone, ocelli present, palpi long and porrect in our species. Tibise smooth. Fore 

 wings cleft a third way to base (fig. 403). Venation practically complete. 



A cosmopolitan and very primitive genus, running into the lower forms of 

 Platyptilia, and leading to the Pterophorini. Larva (of pterodactyla) with dense 

 secondary hair on the cervical shield, unlike the preceding group; with warts and 

 secondary hair on body, the latter clubbed. Two distinct subprimaries behind the 

 spiracles. The larva; are borers in the fall, and external feeders in the spring. 

 They hibernate part-grown. 



1. S. pterodactyla Linnaeus. Body ashy; legs yellowish; tips of palpi white; 

 fore wings and thorax reddish brown; costa and apices of lobes heavily scaled 

 with dark brown; a reniform dark fissural spot; fringe and hind wing darker 

 fuscous; terminal line paler. Nearly 25 mm. 



Caterpillar green; on Veronica. 



Europe. Reported from West Farms, New York. 



2. S. exclamationis Walsingham. Lobes of fore wing distinctly obliquely trun- 

 cate. Gray-brown; a distinct subterminal blackish shade on first feather, and a 

 white subterminal line, besides the usual dark antemedial dot in cell and discal 

 bar. 18-24 mm. 



This species is obviously a transitional form to Platyptilia; it flies in July 

 and August. 



Ottawa, Ontario, and west. 



S. mengeli Fernald, an ash -gray species without the heavy costal shade or dash, 

 is known from Greenland and British Columbia. 



5. MARASMAECHA Meyrick 



Similar to Stenoptilia, Rj stalked, R 3 lost. Our species (at leact) with well- 

 marked scale tufts in inner fringe of fore wing, but none on hind wing. 



1. M. pumilio Zeller. Light brown, dusted with white, especially toward the 

 dorsal margin; posterior half of thorax, with tips of tegulas, abdomen, and base 

 of inner margin of fore wing, pale yellow. Fore wing with a blackish antemedial 

 spot in the fold, and one in the cell; a spot at end of cell. Fringes and hind 

 wing grayer. 15 mm. (ambrosice Murtfeldt, in part; liophanes Meyrick.) 



Larva possibly on Ambrosia or some Papilionaceous plant; moth flying northward 

 in August and September. 



New Jersey to Missouri and south; Old World tropics. 



