92 BULLETIIT 123, UNITED STATES NATIONAL MUSEUM. 



Type localities. — " California, Oregon." 

 Food plant. — Unknown. 



28. EUCOSMA COSTASTRIGULANA Kearfott, 



(Pig. 163.) 



Eucosma costastrigulana Keakfott, Journ. N. Y, Ent. Soc, vol. 16, 1907, p. 

 171. — ^Barnes and McDunnough, Check List Lepid. Bor. Amer., no. 6910, 

 1917. 



A variable species in genitalia, not to be distinguished from 

 comatulana Zeller except by the darker dusting on the fore wing 

 of the latter. I think the two are one species. From the same lo- 

 calities in Colorado we get both forms and nearly all the possible 

 genitalia variations. I am retaining Kearfott's name however un- 

 til something is known of their life history, 



Male genitalia figured from cotype in National Collection from 

 San Diego, California. 



Distribution according to specimens in National Collection, Ameri- 

 can Museum, and Collection Barnes : California, Colorado, Utah. 



Alar expanse. — 13-18 mm. 



Type. — In American Museum. 



Type locality. — San Diego, California. 



Food plant. — ^Unknown. 



29. EUCOSMA COMATULANA (Zeller). 



(Fig. 164.) 



Paedisca comatulana Zeller, Verli. Zool-bot. Ges. Wien, vol. 25, 1875, p. 316. 

 Eucosma comatulana Feenald, in Dyar List N. Amer. Lepid., no, 5098, 



1903. — Barnes and McDunnough, Check List Lepid. Bor, Amer,, no. 6926, 



1917. 



This species has been badly mixed in the collections. Should 

 costastrigulana Kearfott prove to be a distinct species, comatulana 

 must be limited to the form in which the fore wing shows appre- 

 ciable shading of dull fuscous, and has the incurvation of the neck 

 of the harpe wide as in figure 164. In that event it will be neces- 

 sary to erect at least two more species for the forms diverging on 

 genitalia from typical comatulana and costastrigulana but inter- 

 grading with them on pattern and color. The females of both 

 species have an appreciable admixture of black scales in the anal 

 tuft, somewhat more pronounced in the darker specimens of comat- 

 ulana. 



Male genitalia figured from typical specimen in National Collec- 

 tion from Clear Creek, Colorado. 



Distribution according to specimens in National Collection, Ameri- 

 can Museum, and collection Barnes : Texas, Colorado, Arizona, New 



