THE CACTUS-FEEDING PHYCITINAE — HEINRICH 381 



The species is a striking one, easily recognized by the white costal 

 stripe on the fore wing. It most resembles some species now under 

 Epischnia. The latter, however, have 8-veined hind wings and need 

 not be confused. 



13. Genus PAROLYCA Dyar 



Parolyca Dyae, Proc. Ent. Soc. Washington, vol. 30, p. 17, 1928. (Genotype: 

 Olyca asthenosoma Dyar.) 



Antenna of male unipectinate. Labial palpus of male upcurved. 

 Maxillary palpus squamous. Hind wing with veins 7 and 8 shortly 

 anastomosed beyond cell ; 3 and 5 shortly stalked. Eighth abdominal 

 segment with a strong pair of ventrolateral tufts. 



Male genitalia with apical portion of gnathos bifid; uncus nar- 

 rowed well before apex ; harpe with apex oblique ; vinculum long, its 

 terminal margin rounded, its lateral margins excavate (probably a 

 specific character only) ; anellus with base of plate broadly sclerotized, 

 arms long, rather broad and slightly twisted; aedeagus long, stout; 

 penis weakly scobinate. 



Remarks. — The genus is known only from the male of its type 

 species. Its biology is unknown, but from the genitalic and other 

 structural characters of the adult its larvae are presumed to be cactus 

 feeders. It is easily recognized, for it is the only genus in the cactus- 

 feeding group with unipectinate antenna. The habitat is French 

 Guiana. 



1. PAROLYCA ASTHENOSOMA (Dyar) 



Plates 30, 49; FigubjeS 25-25c, 124-124a 



Olyca asthenosoma Dyae, Insecutor Inscitiae Menstruus, vol. 7, p. 55, 1919. 

 Parolyca asthenosoma (Dyar), Proc. Ent. Soc. Washington, vol. 30, p. 137, 1928. 



Male. — Palpi, head, and thorax sordid white. Fore wing white, 

 with a yellowish tint on area between fold and inner margin; ante- 

 medial band angulate, consisting of parallel black lines and a central 

 white line ; a black oblique dash in median area from inner margin to 

 origin of vein 2 ; subterminal line broken, indicated by a pair of black 

 dashes at apex, black dots on the veins, and a black spot on inner 

 margin; a black discal dot at end of cell and some black scaling on 

 bases of veins 2 to 4 ; a row of small black dots along termen, between 

 the vein ends. Hind wing white, semihyaline, with a pale-fuscous 

 shade along costa, a narrow fuscous line along termen, and some pale 

 fuscous scaling on veins 2 to 8. 



Alar expanse, 30 mm. 



Genitalia (figs. 25-25c) with lateral margins of vinculum excavate. 



FeTnale. — Unknown. 



