NORTH AMERICAN LASPEYRESIINAE AND OLETHREUTINAE 95 



Alar expanse. — 8-11. 



2^ypes. — In American Museum. 



Type localities. — Caldwell, New Jersey {vernoniana) ; Cincinnati, 

 Ohio {a77ibrosiana.) 



Food plants. — Veronia noveboracensis, Amhrosia tri-fida (larvae 

 feeding upon seeds). 



10. POLYCHROSIS ARUNCANA Kearfott 



(Fig. 365) 



Polychrosls aruncana Kearfott, Trans. Amer. Ent. Soc, vol. 33, 1907, p. 

 5. — Barnes and McDunnough, Check List Lepid. Bor. Amer., uo. 6783, 

 1917.— Forbes, Memoir 68, Cornell Univ. Agr. Exp. Sta., 1924, p. 472. 



Distinguished by the bright ocher yellow dusting on median band 

 of fore wing. Male genitalia as in spiraeifoliana except basal tuft on 

 sacculus very short and spine clusters Spo^ and Spc- set closer to- 

 gether; figured from paratype in National Collection. 



Female genitalia as in spiraeifoliana. 



Paratypes from type locality in National Collection, American 

 Museum, and collection Barnes. 



Alar expanse. — 8.5-11 mm. 



Type. — In Ameiican Museum. 



Type locality. — Cabin John Bridge, Md. 



Food plant. — Aruncus aruncus (larvae in seeds). 



11. POLYCHROSIS SLINGERLANDANA Kearfott 



(Figs. 179, 359) 



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

 p. 295. — Barnes and McDunnough, Check List Lepid. Bor. Amer., no. 

 6782, 1917.— Forbes, Memoir 68, Cornell Univ. Agr. Exp. Sta., 1924, 

 p. 472. 



Among Kearfott 's cotypes is one specimen (in tho National Mu- 

 seum) collected by August Busck at Plummer Island, Md., which 

 does not belong here. It is a runted male of Endothenia hehesana 

 Walker. The rest of his material is reared and authentic. 



Male genitalia figured from specimens in Am -rican Museum from 

 Essex County Park, N. J. ("K-257, iss. VIII-5-02"); with very 

 short tuft from base of sacculus ; spine clusters Spc ^ and Spc - well 

 developed ; arch between them broad and rounded ; aedoeagus with a 

 prominent emarginate projection on upper edge at apex. 



Female genitalia figured from paratype in National Collection 

 from the type locality ("K-257, VIII-9"). 



Specimens in the National Collection, American Museum, and 

 collection Barnes from New Jersey. 



Alar expanse. — 8-10 mm. 



