NORTH AMEEICAN EUCOSMHsTAE. 103 



A very distinct and strikingly marked species. Specimens in Col- 

 lection Barnes and National Collection from Shasta Retreat (Siski- 

 you County) California are grayish fuscous, considerably paler than 

 the type but agreeing in all details of pattern and genitalia. 



Male genitalia figured from cotype in National Collection. 



Distribution according to specimens in National Collection, Ameri- 

 can Museum, and Collection Barnes : Lake, Mendocino, Placer and 

 Siskiyou Counties, California; Yellowstone Park, Wyoming. 



Alar expanse. — 16-23 mm. 



Type. — In British Museum. 



2'ype locality. — Lake County, California. 



Food plant. — Unknown. 



52. EUCOSMA SONOMANA Kearfott. 



(Fig. 141.) 



Eitcusina sonomana Keakfoot, Trans. Amer. Ent. Soc, vol. 33, 1907, p. 27. — 

 Baekes and McDunnough, Check List Lepid. Bor. Amer., no. 7002, 1917. 



The most beautiful species in the genus and like the following 

 live species closely resembling the bud, cone, and shoot moths for- 

 merly listed under the old genus Retinia {Evett-ia Authors) and 

 superficially distinguishable from them only by the presence of a 

 costal fold in the fore wing of the male. They are all feeders in 

 coniferous trees. 



In the National Collection we have five specimens reared from 

 Pinus ponderosa and Picea engehnanni, March 5, 1915, and April 4 

 and 5, 1916, at Missoula, Montana, by Joseph Brunner (reared in 

 connection with the forest insect investigations of the U. S. Bureau 

 of Entomology under Hopk. U. S..nos. 12350, 12369, and 12370). 



Male genitalia figured from one of the above reared specimens. 



Distribution according to specimens in National Collection, Ameri- 

 can Museum and Collection Barnes : Montana, California. 



Alar expanse. — 18-21 mm. 



Type. — In American Museum. 



Type locality. — Sonoma County, California. 



Food plants. — Pinus ponderosa., Picea engelmanni (larvae boring 

 in the pith of terminal branches). 



53. EUCOSMA BOBANA Kearfott. 



(Fig. 140.) 



Eucosma hoMna KEARroxT, Trans. Amer. Ent. Soc, vol. 33, 1907, p. 26. — 



Baenes and McDunnough, Check List Lepid. Bor. Amer., no. 7000, 1917. 

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



This is a species of economic importance as the larva bores into 

 the cones and feeds on the seeds of the western yellow pines. Sev- 

 eral moths have been reared in connection with the forest insect 



