Lepidoptera of New York and Neighboring States 245 



to M 1 than to M 3 and nearly straight. Caterpillar with a single band of biordinal 

 hooks on prolegs; sometimes with additional setae in group vii of abdomen; 

 otherwise normal; alpha of prothorax nearer mid-dorsal line than beta. Pupa 

 obtect, with 5-6 and 6-7 capable of dorso-ventral motion; flattened and rounded, 

 without cremaster. Maxillary palpi large; labials minute; epicranial suture 

 present, but fronto-clypeal absent; tongue not nearly as long as fore legs, middle 

 legs separated on midventral line by fore legs; hind legs concealed by the antenna?, 

 which lie in contact for their posterior third. Wing cases hardly extending 

 beyond fourth segment of abdomen. End of body unarmed, rounded over. Anal 

 prolegs preserved, provided with hooks, and taking the place of a cremaster; 

 located on each side of the genital opening; apparently corresponding to the 

 anterior group of hooks in Stenoma. 



The peculiar larva of this genus (fig. 151), which is most closely matched in 

 the Choreutis group, has caused some workers to place it in a special family, 

 Ethmiidae, of the Yponomeutoidea. The moth and pupa, however, are very close 

 to the more primitive (Ecophoridas. The typical group feed on Boraginaceae, 

 enclosed in a light web. 



Key to the species 



1. Basal segment of abdomen blackish; the rest yellow, contrasting. 



1. fuscipedella. 

 1. Abdomen all gray. 



2. Middle of wing broadly black from base to apex. 



3. Expanse less than 20 mm., fore wing not streaked between veins. 



2. trifurcella 

 3. Expanse 25 mm. or over; fore wing gray-streaked between veins. 



3. macelhosiella. 

 2. No dark longitudinal stripe. 



3. One short black dash in cell, and dot at lower angle. . . .4. longimaculella. 



3. Two dashes in cell, sometimes connected into a slender streak, and no 



dot 5. zelleriella. 



1. E. fuscipedella Walsingham. Mouse gray; head, thorax, except tegulse, and 

 base of abdomen, concolorous gray; the rest of abdomen and hind tibiae, yellow, 

 immaculate. Two black dots on thorax. A black dot in middle of cell, one or 

 two at end, and antemedial dot in fold. Usually with strong black terminal 

 dots. Hind wing concolorous, immaculate. 25 mm. 



The larva should be sought for on Thalictrum. 

 North Carolina; Iowa; Nebraska; Manitoba. 



2. E. trifurcella Chambers. White, thorax with a black central stripe and a 

 dot on each side of it. Palpi annulate and tipped with black. Fore wing with a 

 black median stripe from base to apex, either trifurcate at apex or much nar- 

 rower and flanked by two black bars. With black terminal dots and two black 

 dots near inner margin (at % and % way out on wing). Antennae dark brown. 

 17 mm. 



No authentic material is known of this species. 

 Kentucky. 



3. E. macelhosiella Busck. White, lightly dusted with black; the black tending 

 to form streaks between the veins, especially toward costa, ending in heavier 

 terminal dots. A broad, irregular, and slightly diffuse black band, from base 

 to apex, crossing apical fringe, and nearly interrupted by a white bar at end 

 of cell. Hind wing gray. Fringe paler. Thorax black and white. 25-28 mm. 



Larva on Phacelia (Hydrophyllaceae) at the beginning of May. With a tuft of 

 hairs on wart vii of ninth segment of abdomen only, the rest of the body with 

 the usual primary hairs. Head, tubercles, setae, cervical and anal plates, true 



