64 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 119 



and tarsus brown (scales pale basally), apices of tibia and tarsal 

 segments buff white. Metathoracic leg: coxa white basally, gray 

 white distally; trochanter pale gray brown, scales with light streaks; 

 femur white dorsally becoming brown ventrally; tibial scales mixed 

 buff white and pale brown, tuft buff white; apices of first four tarsal 

 segments off white, outer surface with a brown dorsal saddle. Ab- 

 domen: buff white dorsally, permanent setae orange; ventral surface 

 pale buff, segments two through six with a lateral gray-brown patch. 

 Alar expanse: 10.5-16.0 mm. Male genitalia: as in figures 129 and 

 130 (RWH slide 1249). Female genitalia: as in figure 168 (RWH 

 slide 1251). 



Food plant: Unknown. 



Type: Male, MCZ. 



Specimens examined: 



UNITED STATES: Arizona: Ajo, Pima Co., 1 9, Mar. 1-15, 1923, O.C. 

 Poling, USNM; Baboquivari Mts., Pima Co., 1 9 , Oct. 15-30, 1924, O.C. Poling, 

 USNM; Fort Valley, 7H mi. NW Flagstaff, 7350 ft., Coconino Co., 1 cf, July 17, 

 1961, R.W. Hodges, USNM; Hart Prairie, 10 mi. NNW. Flagstaff, 8500 ft., Coco- 

 nino Co., 1 &, July 12, 1961, R.W. Hodges, USNM; Huachuca, 1 9 , Aug. 3, 1899, 

 MCZ; Madera Canyon, 4880 and 5600 ft., Santa Rita Mtns., 3cr, 59, Sept. 13- 

 Oct. 27, 1959, R.W. Hodges (RWH slides 1249-1252), CU, USNM; same locality, 

 2 (J', 19, May 11-16, 1963, J. G. Franclemont, JGF; Molino Basin, Santa Cata- 

 lina Mts., Pima Co., 1 9 , June 10, 1959, MacNeill, CAS; Palmerlee, 1 9 , USNM; 

 Paradise, Cochise Co., 2cr, June 1-7, USNM; Ramsay Canyon, Huachuca Mts., 

 Icf, July 10-15, 1941, A.B. Klots, AMNH; Redington, 19, USNM; Vail Lake 

 Road, 9>^ mi. SE Flagstaff, 6500 ft., Coconino Co., IcT, 19, July 11, 18, 1961, 

 R.W. Hodges, USNM. California: Atascadero, 19, July 26, 1935, E.C. 

 Johnston, USNM; Avalon, Santa Catalina Is., Icf, May 17, 1932, MCZ; 12 mi. 

 SE Ivanpah, San Bernardino Co., 2 d^, 19, May 1, 1956, J. Powell, UCB; Los 

 Angeles, 19, Oct. 26, 1920, K.R. Coolidge (AB slide Sept. 21, 1934), USNM; 

 Lytic Creek, San Bernardino Co., 1 9 , June 29, 1946, C. Henne (RWH slide 

 3248), USNM; Mt. Palomar, San Diego Co., Id', July 18, 1963, J. Powell, UCB; 

 San Diego, Icf', Oct. 20, 1920, K.R. Coolidge (AB slide Sept. 21, 1934), USNM; 

 Walnut Cr., foot Shell Ridge, Contra Costa Co., 1 9 , Apr. 22, 1962, J. Powell, 

 UCB. Colorado: Boulder, 19, Cockerell (AB slide June 11, 1937), USNM; 

 Chimney Gulch, Golden, 19, June 7, 1907, Oslar, USNM; Denver, 19, MCZ; 

 Glenwood Springs, 2^^, August 1899, MCZ, USNM. Nevada: Clarke Co., 

 19, May 16-23, USNM. Utah: Eureka, 3 6^, 19, Aug. 13-22, 1911, Tom 

 Spalding, USNM; Warner Ranger Sta., 9000 ft.. La Sal Mts., 19, July 1933, 

 A.B. Klots, AMNH. 



CANADA: British Columbia: Eraser Mills, 1 d", June 22, 1921, L. E. Mar- 

 mont, USNM. Manitoba: Aweme, 5 d", 2 9 , Sept. 5-25, N. Criddle (AB slide 

 June 11, 1937; RWH wing slide 60), CNC, USNM. 



Discussion: R. fuscotaeniaella is moderately variable in maculation 

 with gradations between nearly all white and dark specimens kno\vn. 

 The head, thorax, and left wings remain of the type specimen. It is a 

 nearly white representative of the species. 



