114 WILLIAM T. M. FORBES 



1. ACOLOITHUS Clemens 



(Harrisina, in part) 



Wings bluntly rounded and somewhat translucent, hardly reaching end of abdo- 

 men. Fore wing (fig. 63) with 4 radials, all arising separately from cell, hind 

 wing with base of R represented by a spur in cell; Mj lost; 3 anals; anal angle 

 slightly lobed. Caterpillar with inconspicuous hair, with a broad dark lateral line; 

 found on grape and ampelopsis. 



1. A. falsarius Clemens. Black with orange collar. 16-18 mm. (sanborni 

 Packard) (H 16:14). 



The moth may be found on flowers in May and June. 



New York to Louisiana, Florida, and Texas. New York: Syracuse, Ithaca, 

 Rhinebeck, Crugers; Centerport and Lake Ronkonkoma, Long Island. 



2. PTROMORPHA Herrich-Schseffer 

 (Malthaca Clemens) 



Wings (fig. 62) bluntly rounded, hind wing larger than in Acoloithus, usually 

 extending well beyond end of abdomen ; female with wings very slightly reduced. 

 Fore wing with all veins preserved. R 3 and R 4 stalked; hind wing with all veins; 

 base of R lost. Wings very thin, with hair-scales. Larva with inconspicuous hair, 

 dark, checkered with pale patches; on dead oak leaves. 



1. P. dimidiata Herrich-SchaefFer. Smoky; basal half of fore wings except on 

 inner margin, and costal edge of hind wings, pale tawny, the tawny less extensive 

 in female. 25 mm. (Malthaca perlucidula Clemens). (H 47:33 j.) 



The moth flies from the end of May to July. 



New York to Florida; also reported from the Western States. New York: Coy 

 Glen (Ithaca), Staten Island, Brooklyn. 



3. HARRISINA Packard 

 (Aglaope; Procris) 



Fore wings four times as long as wide, outer and inner margins equal; R 2 

 stalked, but R 5 arising from cell, and widely separated from R 24 3+4. Hind wing of 

 less than half the area of the fore wing, with M t and 3d A lost. Wings more 

 heavily scaled than in other genera. 



Caterpillar with black tufts contrasting with the pale ground; social on grape. 



1. H. americana Gu6rin. Black, slightly greenish iridescent, with orange collar. 

 Fore wing ivith vevn R 3 lost (fig. 65). 18-25 mm. (H. p. 372 f. 210.) 



The larva is nearly white, with the black markings confined to the tufts. The 

 moth flies from May to August. Perhaps the species has a wider distribution, but 

 it has always been confused with H. texana. 



Massachusetts to Virginia. New York: Troy, Poughkeepsie, Staten Island. 



2. H. texana Stretch. Similar to H. americana, but with all veins preserved, 

 Rj, R, and R, stalked (fig. 64). 20-28 mm. (H. 43:34 as americana.) 



Larva with black transverse bands, sometimes broken, and a reddish lateral 

 band. 



New York to Texas. New York: Poughkeepsie; Woodhaven and Yaphank, 

 Long Island. 



The southwestern variety australis Stretch, which has been taken in Florida and 

 Georgia, has orange on the base of the tegulse, as well as on the collar. 



