PTEROPHORUS HOMOE*CTYLUS. 



Pterophorus homodaclylus Walk., Cat. Lep. Het., Vol. XXX., p. 



941 (1864). 



? Leioptilus hololeucos Zell., Lep. Westk. Am., p. 23 (1874). 

 Lioplilus homodactyhis Wlsm., Pter. Cal. and Ore., p. 50, Plate 



III, figs. 8, 9 (1880). 



Expanse of wings, 22-27 mm. Head white, palpi and antennae 

 whitish. Thorax and abdomen white. Legs white, slightly tinged 

 with cinereous. 



Fore wings white, very slightly dusted on the costa with brown- 

 ish scales ; a brownish spot before and slightly below the base of 

 the fissure ; a group of indistinct brownish scales between this and 

 the base of the wing ; a faint indication of two brownish dots on 

 the outer margin. Hind wings and fringes pure white, with a 

 silky lustre. In some specimens the brownish spots are absent. 



A variety of this species has the head brown behind and in 

 front, the palpi brownish and antennae dingy white. Fore wings 

 more heavily dusted with brown scales, fringes tinged at the tips 

 around the obsolete anal angle with pale cinereous. Hind wings 

 and fringes very pale cinereous. Legs white, first two pairs 

 touched with brownish on their inner sides. 



A specimen of this species was sent by Lord Walsingham to 

 Professor Zeller, who remarked : 4 4 Only larger, otherwise agree- 

 ing with Lioptilus hololeucos Zeller ; on the right anterior wings it 

 has also two dots." 



Habitat. South America, California, Oregon. Food, Soli- 

 dago, Eupatorium purpureum. 



44 Larva. Length, .55 of an inch ; pale yellowish green ; dorsal 

 line sharply defined, white; subdorsai and stigmatal lines similar; 

 the top of each ring from the second to the tenth bears a minute 

 circle of white interrupting the dorsal line. The dorsal spaces of 

 each ring from the fourth to the eleventh bear a pair of tubercles 

 on either side of the middle line, from these proceed rather long, 

 stiff, hoary, smooth hairs ; the thoracic and terminal rings have a 

 single papilla in place of the pairs. These tubercles stand in a 

 light stripe. Below them a single tubercle with similar appen- 

 dages ; below the spiracles a larger one with a minute one back 

 of it bearing three or four hairs, also one above the line of the 

 feet. Legs and ventral surface hairy. The anterior half of the 

 first ring bears many hairs, which hang over the head somewhat. 

 Spiracles round, rim white; back of each there is a short, stiff 

 hair. Head almost colorless, except mouth organs and ocelli; 



