REVISION OF THE OECOPHORIDAE — CLARKE 249 



Borkhmiscnia ditnifUeUa (Walfangham) Kearfott, in Smith, Check list of the 

 Lepidoptera of Boreal America, No. 6471, 1903.— Busck, Proc. U. S. Nat. 

 Mus., vol. 27, p. 707, 1904. 



Epicallima dhnidiella (Walsingham) Busck, Proc. U. S. Nat. Mus., vol. 35, p. 202, 

 1008. — Barnes and McDunnough, Check list of the Lepidoptera of Boreal 

 America, No. 6493, 1917.— Treherne, Sci. Agr., vol. 1, p. 116-118, 1921.— 

 Beaun, Proc. Acad. Nat. Sci. Philadelphia, vol. 73, p. 12, 1921. — EssiG, Insects 

 of Western North America, p. 719, 1926. 



Schiffermuelleria dimidieUa (Walsingham) Meyeick, in Wytsman, Genera in- 

 sectorum, fasc. 180, p. 27, 1922. 



Schiffcrmiilleria dimidieUa (Walsingham) Forbes, Cornell Univ. Agr. Exp. Stat. 

 Memoir 68, p. 247, 1923.— Br-vun, Trans. Amer. Ent. Soc, vol. 51, p. 197, 

 1925. — McDunnough, Check list of the Lepidoptera of Canada and the United 

 States of America (Part 2, Microlepidoptera), No. 8364, 1939. 



Palpus black ; second segment with a white longitudinal streak in- 

 wardly; apex of third segment white. Head and basal segment of 

 antenna white to yellowish; antenna black with white spot above 

 on each segment. Thorax, fore wing and cilia, and abdomen dark 

 brown to black. Fore wing with four white or yellowish spots, two 

 on costa and two on inner margin. Hind wing fuscous; cilia con- 

 colorous. Legs dark brown to black with whitish to yellowish in- 

 wardly ; tarsi annulated with white or yellowish, 



Male genitalia. — Costa straight; cucullus pointed; sacculus broad, 

 lightly sclerotized. Anellus with short, slender, lateral processes. 

 Vinculum rounded. Aedeagus slender, weak. Gnathos truncated. 

 Uncus bluntly pointed. 



Female genitalia. — Genital plate rectangular, moderately sclero- 

 tized; ostium V-shaped. Bursa copulatrix oval, signum a single, 

 strongly sclerotized curved thorn. 



Alar expanse, 11-20 mm. 



Types. — In Museum of Comparative Zoology, Cambridge, Mass. 

 (?) {quadrimaculella) ; in British Museum {dimidieUa). 



Type localities. — Clear Creek, Colo. {quadrimMcidella) ; Sonoma 

 County, Calif. {dimidieUa). 



Distribution. — North-central and Western United States and 

 Canada. 



United States records 



Arizona: Redington, 2 $ $, $ (no date or collector) ; Santa Catalina Moun- 

 tains, 9 (no date or collector). 



California: Camp Baldy, San Bernardino Mountains, 2 (July 16-23) ; Monache 

 Meadows, Tulare County, 8,000 feet, 5 (July 8-14) ; Sonoma County, $ 

 (19-V-1871, Walsingham) ; Tuolumne Meadows, Tuolumne County, 2 (July 

 16-23). 



Colorado: Custer County, 2 (Wm. Beutenmiiller) ; Florissant, $ (July 8, 1907, 

 S. A. Rohwer) ; Peaceful Valley, 2 (July 5, W. P. and T. D. A. Cockerell) ; 

 Silverton, 2 2 2 (July 24-31); $, labeled only "Colorado," Wm. 

 Beutenmiiller). 



