42 U.S. NATIONAL MUSEUM BULLETIN 280 



1952 (Lloyd Martin) [LACM]; 6 cf , 1 9, Aug. 19, 1953 (Robert J. Ford) [CNC]; 

 1 9, Aug. 16, 1953; 1 9, Aug. 18, 1953; 1 9, Aug. 21, 1953; 1 9, Sept. 2, 1953 

 (Lloyd Martin) (LACM]; 1 cf, Sept. 8, 1953; 2 9, Aug. 24-Sept. 2, 1957 (W. A. 

 Hammer) [LACM]; locality unknown: "So. Arizona," 3 c?, 1 9, August 1-15 

 (Poling) [USNM]. 



Discussion. — In the original description Dyar lists two males, one 

 of these is in the National IVEuseum, the fate of the other is unknown. 



Arivaca linelkif new species 



Figures 16, 56, 85, 120, 157 



Diagnosis. — The flat, moderately well sclerotized medial process 

 of the uncus distinguishes this species within the genus. The stalked 

 condition of R2 separates both sexes from pimella. 



Description.— Antennae light brown, sublaminate in male, cilia 

 about one-third as long as segment width, female with shaft white. 



Forewings brown anterior to cell; R2 stalked with R3+4. 



Male genitalia with mediodistal margin of uncus irregular, usually 

 bearing pair of small sharp teeth laterally. Gnathos with apical 

 process padlike, not strongly projected dorsally. 



Types. — In the Canadian National collection. 



Type data. — Holotype male, Colfax County, N. Mex., Sangre de 

 Cristo Mts., Cimarron Canyon (7900 ft.), July 13, 1962, E. and I. 

 Munroe; C.N.C. Type No. 9442; genitalia slide No. 274, J. Shaffer, 

 Sept. 15, 1964. 



Paratypes: Four males, same data and locality as holotype. 



Specimens examined. — 18 cf , 3 9 • 



Distribution (Map 9). 



UNITED STATES: Arizona: Apache Co., 3 mi. west Eagar (7100 ft.), 

 Pinon-Juniper life zone, 1 cf , July 13, 1962 (E. and I. Munroe) [CNC]; Greer, 

 White Mts. (8500 ft.), 1 d', Aug. 2, 1962 (E. and I. Munroe) [CNC]; 1 9 , Aug. 4, 

 1962; 5 cT, Aug. 6, 1962; 1 9, Aug. 9, 1962; 1 cf, Aug. 11, 1962. 



Colorado: "Rock Creek Canyon," Icf, July 19, 1961 (Margot May) [CPK]. 



New Mexico: Colfax Co., Cimarron Canyon, Sangre De Cristo Mts. (7900 

 ft.), 2 d", July 14, 1962 (E. and I. Munroe) [CNC]; McKinley Co., McGaffey, 

 Zuni Mts. (7500 ft.), 1 <?, July 21, 1962 (E. and I. Munroe) [CNC]; 1 cf , July 25, 

 1962; Sandoyal Co., Frijoles Canyon, Bandelier Nat. Mon. (6050 ft.), 4 cf , July 

 17, 1962 (E. and I. Munroe) [CNC]; 1 9, July 18, 1962; Horseshoe Springs 

 Camp, 2 mi. west La Cueva (7900 ft.), 1 cf , July 29, 1961 (F., P., and J. 

 Rindge) [ABK]. 



The Ostreella Group 



Diagnosis. — The group is easily recognized by the light orange 

 forewings with the costal margin and cubitus both prominently 

 marked with white. The tapering pointed valvae distinguish males 

 of the group. 



