88 U. S, NATIONAL MUSEUM BULLETIN 209 



Female: Forewing 7.5 to 13 mm. long. 



Black. Wings fuscous; abdomen red, the base of the first tergite 

 black. 



Variety: Four males and one female have the abdomen largely 

 (the males) or entirely (the female) blackish, and may represent a 

 distinct race. These are: cf, Faii-fax, Marin County, Cahf., Apr. 12, 

 1925, C. L. Fox (Townes). cf , Mill Valley, Marin County, Calif., 

 Feb. 28, 1926 (San Francisco). 9, Miat Canyon near Palmdale, 

 Calif., Apr. 20, 1932, E. P. VanDuzee (San Francisco), cf , Sonoma 

 County, Calif., Feb. 20, 1911, J. A. Kusche (San Francisco), cf, 

 Yorkville, Calif., May 8, 1935, E. P. VanDuzee (Berkeley). 



Specimens (typical variety; 28 cf, 2679): From Arizona (Parker 

 Creek in the Sierra Ancha) ; British Columbia (Aspen Grove, Creston, 

 Kaslo, Lavington, Penticton, Kobson, Salmon Arm, and Vernon); 

 California (Berkeley, Dutch Flat, Fairfax, Fish Camp, Glen Ellen, 

 Hat Lake in Lassen National Park, Humboldt County, Inverness, 

 Lake Pilarcitus in San Mateo County, Manzanita Lake in Lassen 

 National Park, May Lake in Yosemite National Park, Miami Ranger 

 Station in Mariposa County, Mill Valley, Mount Diablo in Contra 

 Costa County, Mountain View, Nevada City, Old Station, Palmdale, 

 Richardson Springs, Ross, Ryan Creek in Mendocino County, San 

 Francisco, San Jose, Santa Clara County, Shasta County, southern 

 Sonoma County, Smoky Jack Camp in Yosemite National Park, and 

 Yorkville) ; Idaho (Boise, Burley, Cedar Mt. near Moscow, Moscow, 

 Moscow Mt,, and Potlatch); Nevada (Reno); Oregon (Alsea Mt., 

 Astoria, Breitenbush, Corvallis, Drift Creek, Echo, Marion, Mosier, 

 Oakville, Portland, Salem, Scio, Shaw, Toledo, Waldport, Wildhorse 

 Mt. near Athena, and Wren) ; Utah (Logan and Salt Lake City) ; and 

 Washington (Almota, Buena, Clarkston, Gilmer, Olympia, Palouse, 

 Pullman, Ritzville, Spokane, Wawawai, and Wenatchee). 



Alost dates of collection are from Mar. 20 to June 6. At more 

 northern latitudes or at higher altitudes the dates run somewhat later, 

 and a few stragghng females have been taken in August. Representa- 

 tive early and late dates are: Feb. 20 in southern Sonoma County, 

 Calif.; Feb. 28 at Mill Valley, Cahf.; Mar. 3 at Corvallis, Oreg.; 

 Mar. 9 in Washington State; Mar. 10 at Berkeley, Calif.; Mar. 11 at 

 Wren, Oreg.; Mar. 12 at Dutch Flat, Calif.; Mar. 16 at Reno, Nev.; 

 Mar. 20 at Toledo, Oreg.; Mar. 25 at Spokane, Wash.; March 27 at 

 Vernon, British Columbia; June 14, June 28, and Aug. 2 at Corvallis, 

 Oreg., June 16 at Ryan Creek, Mendocino County, Calif.; June 24 at 

 Cedar Mt., Moscow, Idaho; June 21 at 8,000 ft. and June 26 at 10,500 

 ft. in Yosemite National Park, Calif.; Aug. 10 and 16 at Echo, 

 Oreg.; Aug. 16 at Toledo, Oreg.; November at San Francisco, Calif. 

 (9); and Dec. 16 in the hills back of Oakland, Calif. (2cf). The last 



