NORTH AMERICAN EUCOSMINAE. 121 



95. EUCOSMA DORSISIGNATANA DIFFUSANA Kearfott. 



(Fig. 173.) 



Eucosma dorsislgnatana diffusana Kearfott, Proc. U. S. Nat. Mus., vol. 28, 

 1905, p. 355. — Barnes and McDunnough, Check List Lepid. Bor. Amer., 

 no. 7029, 1917. 



I think this is nothing but a color variety of dorsislgnatana and 

 will eventually fall as a synonym. Extensive rearings are necessary 

 to determine the specific limits of dorsislgnatana. E. diffusana may 

 prove to be a food plant variety. It is obviously not a geographical 

 race. There are slight, but no really significant, genitalia differences 

 between it and typical specimens of dorsislgnatana. 



Male genitalia figured from cotype in National Collection, from 

 Tryon, North Carolina (Fiske, Collector). 



Distribution according to specimens in National Collection, Ameri- 

 can Museum, and collection Barnes: North Carolina, District of 

 Columbia, New York, Illinois, New Jersey, Pennsylvania, Louisiana. 



Alar expanse. — 15-23 mm. 



Type. — In American Museum. 



Type locality. — Vernon Parish, Louisiana. 



Food plant. — Unknown (presumably Solldago). 



96. EUCOSMA DORSISIGNATANA SIMILANA (Clemens). 



(Fig. 172.) 



Poecilochroma ? similana Clemens, Proc. Acad. Nat. Sci. Phila., 1860, p. 353. 

 Paedisca dorsislgnatana Feknald, Syn. Cat. Tort. N, Amer., no. 290, 1882. 

 Eucosma dorsisignatana Fernald, in Dyar List N. Amer. Lepid., no. 5144, 



1903. — Barnes and McDunnough, Check List Lepid. Bor. Amer., no. 7029, 



1917. 

 Eucosma dorsisignatana confluana Kearfott, Proc. U. S. Nat. Mus., vol. 28, 



1905, p. 355; Can. Ent., vol. 37, 1905, p. 208. — Barnes and McDunnough, 



Check List Lepid. Bor. Amer., no. 7029, 1917. 



Kearfott named his variety confiiuMW, on the assmnption, generally 

 accepted, that similana Hlibner and similana Clemens were con- 

 generic and that the latter name was therefore preoccupied. Hiib- 

 ner's species, however, is an Eplnotla., and as both his and Clemens's 

 species were originally described in different genera, Clemens's name 

 Avill take precedence over Kearfott's. I think that eventually simi- 

 lana^ like the other supposed varieties of dorsislgnatana^ will prove 

 to be nothing but a mere color variety of dorsislgnatana and will 

 fall back into the synonymy. Until this is definitely established it 

 seems wise to have a name calling attention to the differences. 



Male genitalia figured from specimen in National Collection from 

 Washington, District of Columbia (August Busck, August, 1900). 



Distribution according to specimens in National Collection, Ameri- 

 can Museum, and collection Barnes : Massachusetts, New Jersey, New 

 York, Pennsylvania, Illinois, District of Columbia, Manitoba. 



