140 BULLETIlsr 123, UNITED STATES NATIONAL. MUSEUM. 



Specimens in National Collection, American Museum, and collec- 

 tion Barnes from Placer County, California. 

 Alar exfanse. — 15-17 mm. 

 Type. — In American Museum. 

 Type locality. — Cisco, Placer County, California. 

 Food plant. — Unknown. 



3. EPIBLEMA STRENUANA (Walker). 



(Figs. 257, 258.) 



Grapholita strenuana Walker, Cat. Lepid. Heter. Brit. Mus., vol. 28, 1863, p. 



383. 

 Grapholita exvaffana Walker, Cat. Lepid. Heter. Brit. Mus., vol. 28, 1863, p. 383. 

 Steganoptpcha flavocellana Clemens, Proc. Ent. Soc. Pliila., vol. 5, 1865, p. 138. 

 Qrapholitha sulveirsana Zeller, Verb. Zool.-bot. Ges. Wien, vol. 25, 1875, p. 318. 

 Paedisca strenuana Walsingham, IUus. Lepid. Heter. Brit. Mus., vol. 4, 1879, 



p. 52 ; Trans. Ent. Soc. Lond., 1884, p. 140. 

 Eucosma strenua/na Fernald, in Dyar List N. Amer. Lepid., no. 5129, 1903. — 



Barnes and McDunnough, Check List Lepid. Bor. Amer., no. 6981, 1917. 

 Eucosma minutana Kearfott, Proc. U. S. Nat. Mus., vol. 28, 1905, p. 356. — 



Barnes and McDunnough, Check List Lepid. Bor. Amer., no. 6982, 1917. 

 Eucosma antaxia Metrick, Exot. Microlepid., vol. 2, pt. 2, 1920, p. 344. 



This is the most variable species of the genus both in color and 

 structure. On the differences in shape and size of the harpes one 

 would be inclined to divide it into at least six species. None of the 

 forms can be maintained, however, even as a race, as all possible 

 variations are to be found in any rearing from a given locality. 

 Kearf ott's minutana is the most distinct on color ; but it is not con- 

 stant and in color and structure grades into the typical dark strenuana 

 form. In all specimens the chitinization of the subanal plate of the 

 gnathos is the same and a constant character. The size and minor 

 differences of the harpes, however, can not be used to separate this 

 species even from those of the numerosana group. The latter also 

 have a constant character in the subanal plate of the gnathos. This 

 structure is nearly square in numerosana, and its allies while in 

 strenuana it approaches the hour-glass shape. 



Male genitalia figured from specimens in National Collection 

 from San Diego, California (fig. 257) and Palm Beach, Florida 

 (fig. 258). These show the two extremes in genitalia structure. 

 The former is the more nearly typical. 



Distribution according to specimens in National Collection, Ameri- 

 can Museum and collection Barnes: California, Utah, Colorado, 

 Missouri, Texas, Arkansas, Tennessee, Ohio, West Virginia, Florida, 

 North Carolina, Virginia, Maryland, District of Columbia, Penn- 

 sylvania, New York, New Jersey, Connecticut, Illinois. 



Alar expanse. — 10-19 mm. 



