94 BULLETIN 132, UNITED STATES NATIONAL MUSEUM 



Distribution. — Pennsylvania, New Jersey, New Hampsliire. 

 Alar expanse. — 8-10 mm. 

 Type. — In collection Barnes. 

 Type locality. — Hazelton, Pa. 

 Food plant. — Spiraea salicifolia. 



8. POLYCHROSIS AEMULANA, new species 



(Figs. 180, 369) 



Superficially like vernoniana and spiraeifoliana and hardly to be 

 distinguished except by genitalia. The latter, however, easily iden- 

 tify it. The diagnostic pattern characters (such as they are) are 

 given in the key. 



Male genitalia with sacculus of harpe but slightly rounded, a mod- 

 erately long tuft from base; spine clusters Spc^ and Spc- set close 

 together, arch between them narrowly angulate; aedoagus with a 

 round spine projecting downward from lower margin at apex. 



Male genitalia of type figured. Female genitalia figured from 

 paratype in collection Barnes from Essex County Park, N. J. 



Alar expanse. — 9-10 min. 



Type. — In American Museum. 



Paratype. — Cat. No. 28031, U.S.N.M. Also in collection Barnes. 



Type locality. — Hazelton, Pa, 



Described from male type and one female paratype from the typo 

 locality (Dietz, "7-3-05") and one female paratype from Essex 

 County Park, N. J. (Kearfott, June 3). 



9. POLYCHROSIS VERNONIANA Kearfott 

 (Figs. 177, 371) 



Polychrosis vernoniana Kearfott, Trans. Amer. Ent. Soc, vol. 33, 1907, p. 



7. — Barnes and McDunnough, Check List Lepid. Bor. Amer., no. 6787, 



1917. 

 Polychrosis amhrosiana Kearfott, Trans. Amer. Ent. Soc, vol. 33, 1907, 



p. 8. — Barnes and McDunnough, Check List Lepid. Bor. Amer., no. 



6788, 1917.— Forbes, Memoir 68, Cornell Univ. Agr. Exp. Sta., 1924, 



p. 472. 



There are no differences in genitalia or pattern between Kearfott's 

 two supjDosed species. 



Male genitalia figured from paratype (of amhrosiana) in National 

 Collection from the type locality; as in spiraeifoliana except with 

 sacculus more angulate, basal tuft longer, and arch between spine 

 clusters Spc^ and >Spc^ round rather than angulate. 



Female genitalia figured from paratype (of amhrosiana) in the 

 American Museum. 



Distribution. — New Jersey, Pennsylvania, District of Columbia, 

 Ohio, Missouri. 



