LEPIDOPTERA OF NEW YORK AND NEIGHBORING STATES 645 



in the fringe; second feather strongly falcate. One radial sometimes lost; R, 

 stalked; M 3 stalked with CUj. Hind wing with a heavy black tuft in the dorsal 

 fringe on the apical fourth of the third feather, and in our species with a heavy 

 tuft opposite it in the costal fringe of the feather. (Larva, fig. 407.) 



Key to the species 

 1. Ground ochre yellow i. periscelidactylus. 



2. Second segment of palpus not tufted. 



2. Second segment of palpus tufted at apex below 3. delawaricus. 



1. Ground dark brown 2. tenuidactylus. 



1. 0. periscelidactylus Fitch. Tawny or ochre yellow, including the head and 

 thorax. Palpi orange and white; antennae white above, barred with brown. Fore 

 wing with postmedial line white, crossing the two feathers well beyond their sepa- 

 ration, and continued as a fine and broken line around the base of the notch from 

 one feather to the other. Subterminal line white, practically crossing the first 

 feather, but not reaching the inner margin of the second. Hind wing with first 

 two feathers chocolate brown, third nearly white, with a blackish apex. 18 mm. 



Rather common from the end of May to July. Caterpillar with tufted hair and 

 fine clubbed secondary hair; webbing together the growing tips of grape, but inju- 

 rious only in localities where it occurs exceptionally early, as otherwise it only 

 damages the shoots which are soon to be pruned away. Pupa suspended in the web. 



Generally distributed. New York : Vicinity of Buffalo, Union Village, Batavia, 

 Ithaca, Schenectady, Albany, Menands, Poughkeepsie, New Windsor, Scarsdale. 



2. 0. tenuidactylus Fitch. Antennae black and white. Dark brown with some 

 coppery tint, and often more or less tawny, or heavily mixed with black; post- 

 medial and subterminal lines as in 0. periscelidactylus. Apical fringe sometimes 

 gale yellow ( delawaricus of collections). Hind wing blackish, the third feather 

 with some white near the middle; under side of first feather with fine postmedial 

 and subterminal lines. Hind tibiae with spurs at middle; hind tarsi lightly barred 

 with black, except at base. Abdomen brown, third segment with diverging white 

 stripes, fourth all brown, fifth mostly white above; below, with fourth segment 

 mostly white, and much white on the other segments. 12 mm. 



May; July and August. Caterpillar on blackberry. 



Generally distributed and common. New York: Keene Valley, Geneva, Wells, 

 vicinity of Buffalo, Rock City (Cattaraugus County), Ithaca, Schenectady, Albany, 

 Poughkeepsie. 



In 0. cygnus Barnes and Lindsey, from Iowa, each segment of the abdomen is 

 marked with white, above, the fourth as heavily as the others. 



0. raptor Meyrick, from Colorado and Hessville, Indiana, differs from tenuidactylus 

 in the upper spurs of the hind tibiae being well beyond the middle. Abdomen 

 with some white scales on hind margins of segments only. June to September. 



3. 0. delawaricus Zeller. Ochre yellow, like 0. periscelidactylus. Second feather 

 of fore wing less markedly falcate, and markings less clean-cut. Tuft on second 

 feather of hind wing weaker. 13-20 mm. (bemardmus Grinnell, and raptor Mey- 

 rick, in part). 



June and early July; apparently rare. 

 Quebec to New Jersey; west to the Pacific. 



3. TRICHOPTILUS Walsingham 

 (Buckleria Tutt) 



No frontal tuft; palpus with second segment tufted; fore wing more deeply cleft, 

 full two-fifths the length of the wing; both feathers linear, much narrower than 

 their own fringes, and without dorsal angles. Hind wing with feathers linear, 

 the third with a strong tuft two-thirds way out. 



