92 BULLETIN 132, UNITED STATES NATIONAL MUSEUM 



4. POLYCHROSIS CYPRIPEDIANA Forbes 



(Figs. 15, 367) 



Polychrosis cypripediana Forbes, Memoir 68, Cornell Univ. Agr. Exp. Sta., 

 1924, p. 473. 



Like the preceding (monotropana) in color, pattern, and genitalia, 

 but with paler hind wings and less black dusting on dark areas of 

 fore wing. There is little or no black scaling on subapical spot, 

 and the latter is considerably paler than the median band. Veins 

 8 and 9 of fore wing while not far apart at base are still distinctly 

 separate and farther apart than 7 and 8. The termen is also 

 straighter near apex. In pattern, color, and wing structure it is 

 still closer to rhoifnoctana, but is easily distinguished from the latter 

 by the male genitalia having a short tuft on base of sacculus. 



The female genitalia are as in monotropana. 



Male genitalia of type figured 



Alar expanse. — 9-10.5 mm. 



Type. — In American Museum. 



Paratypes. — Cat. No. 28030, U.S.N.M. Also in American Museum 

 collection Barnes and Canadian National Collection. 



Type locality. — Aweme, Manitoba. 



Food plant. — Cypripedium (larvae feeding on seeds). 



Described from male type, 2 male and 4 female paratypes all 

 reared and from the type locality and dated as follows : type and 1 

 male and 1 female paratypes, "Jan. 14-09"; 1 male paratype, "Jan. 

 1-09 " ; 2 female paratypes, " 14-IV-07 " ; 1 female paratype, " Jan. 

 1906, from larva collected 25 Aug. 1905 ".(N. Criddle). 



These specimens Kearf oot had set aside as a new species under the 

 manuscript named cypripediana., validated by Forbes and therefore 

 credited to him. Inasmuch as Forbes designated no types, I do so 

 here. Several of the specimens are in poor condition. The mid- 

 winter issuing dates are probably due to indoor rearing. 



5. POLYCHROSIS RHOIFRUCTANA Kearfott 

 (Figs. 176, 372) 



Polychrosis rhoifructana Kearfott, Trans. Amer. Ent. Soc, vol. 30, 1904, 

 p. 296. — Barnes and McDunkough, Check List Lepid. Bor. Amer., 

 no. 6786, 1917. — Forbes, Memoir 68, Cornell Univ. Agr. Exp. Sta., 

 1924, p. 473. 



Larvae feed in the fruits of Sumac and occasionally upon seeds of 

 Cornus and Kahnia. Reared specimens from the last two Kearfott 

 had set aside as new species; but there is nothing upon which to 

 separate them from typical rhoifructana. 



