108 BULLETIN 123, UNITED STATES NATIONAL MUSEUM. 



66, EUCOSMA EMACIATANA ( Walsingham) . 



(Fig. 193.) 



Paedisca emaciatana Walsingham, Trans. Ent. Soc. Lond., 1884, p, 137. 

 Eucosnm emaciatana Fernald, in Dyar List N. Amer. Lepid., no. 5154, 1903. — 

 Baknes and McDunnough, Check List Lepid. Bor. Amer., no. 7042, 1917. 



This species is one of a number in the genus that have very similar 

 genitalia; but those with the same wing shape and similar pattern 

 differ in genitalia structure. The termen of the fore wing in emacia- 

 tana is straight and decidedly slanting. There are two specimens in 

 the National Museum from the material submitted by Doctor Barnes 

 and other specimens in his collection which I determine as this species. 

 Kearfott's specimen in the American Museum is not the same and I 

 do not believe can be Walsingham's species, althqugh Kearfott's 

 specimen is from Arizona. In most cases, where there are any chances 

 of mistake or where the species are at all obscure, his determinations 

 of Walsingham's species are not to be relied on. 



Male genitalia figured from specimen in National Collection col- 

 lected at Eureka, Utah., by Tom Spalding (" vii-2T-ll "). 



Distribution according to specimens in National Collection and 

 Collection Barnes : Eureka and Vineyard, Utah. 



Alar expaQise. — 22 mm. 



Type. — In British Museum. 



Type locality. — Arizona. 



Food plant. — Unknown. 



67. EUCOSMA TOTANA Kearfott. 



(Fig. 198.) 



Eucosma totana Keaefott, Trans. Amer. Ent. Soc, vol. 33, 1907, p. 32. — Baknes 



and McDunnough, Check List Lepid. Bor. Amer., no. 6928, 1917. 

 Eucosma spodias Meykick, Ent. Mo. Mag., vol. 48, 1912, p. 35. 



Very close to emaciatana Walsingham and with similar genitalia 

 and markings, but obviously a distinct species. It differs in the 

 following : 



The palpi are much longer; the dustings and markings on fore 

 wing are more distinct and ashy fuscous rather than faun brown; 

 the apical costal dash is oppositely curved (in emaciatana it curves 

 inward slightly from the apex and is distinctly faun brown) . There 

 is also a distinct cloud of dark scales over ocellus and a dusting 

 of dark scales along vein \c which are lacking in emaciatana. The 

 termen of fore wing is slanting as in emaciatama but veins 3 and 4 are 

 somewhat more bent and slightly more approximate at termen. 



Kearfott's cotypes represent at least two different species, none of 

 the paratypes apparently agreeing with the type. I have been able 

 to match the latter 'with three males from Eureka, Utah. There is 



