REVISION OF GENUS EUCERCERIS CRESSON 13 



3. Eucerceris arenaria Scullen 



Figures 3, 61 a, b, c, d, e, f, g 



Eucerceris arenaria Scullen, 1948, pp. 166, 157, 168-170, figs. 6a, b, c, d, e, f, 15; 

 1951, p. 1011. 



Types. — The holotype female from Helendale, Calif, and the allo- 

 type male from Cuchinbiiry Springs, Calif., Aug. 16, 1937, on Solidago 

 confinus (P. H. Timberlake) are at the University of CaUfornia at 

 Riverside, CaUf. 



Distribution. — In recent years the known distribution of E. 

 arenaria Scullen has been greatly extended. Its known range extends 



Figure 3. Western U.S. E. arenaria Scullen 



from southern California through Nevada and Arizona to south- 

 western New Mexico, "with one record from Colorado. Specimens are 

 as follows: 



Arizona: 9 , Bartlett Dam, July 13, 1960 (J. E. Gillaspy) ; cT, Chiricahua Mts., 

 Cochise County, Aug. 11, 1961 (W. J. Hanson); cf, Dewey, Yavapai County, 

 Aug. 2, 1960 (M. L. Rice); 9, North Rim, Grand Canyon, 8,000-9,000 ft. elev., 

 July 18, 1938 (F. E. Lutz); cf , Granite Reef Dam, Maricopa County, May 8, 1964 

 (J. H. Puckle); cf, 23 mi. E. Kingman, July 1, 1952 (Beamer and party); cf, 

 Nogales, July 12, 1913 (Oslar); cf. Phoenix, Oct. 20, 1934 (R. H. CrandaU); 

 7cf (f", Portal, Cochise County, Aug. 3, 9, 12, 1958 (R. M. Bohart); 19 9 9 , 

 5cf cf, same locality, Aug. 5, 9, 12, 15, 1958 (P. D. Kurd); 2 9 9, cf , 2 mi. NE. 

 Portal, Cochise County, Aug. 2, 1959 (E. G. Linsley); 10 9 ?, 46cf cf, same 

 locality, July 29, 30, Aug. 1, 3, 5, 1960 (M. Statham); cf , same locality, Sept. 19, 

 1961, at Euphorbia albomarginata (M. Cazier) ; 3 9 9i 37cfcf, same locality, 

 Aug. 13, 14, 15, 17, 18, 1962, at Baccharis ylutinosa (H. A. Scullen); 29 9, same 

 locality, 4,600 ft. elev., Aug. 15, 1962 (J. Wilcox); cf, Sabino Canyon, Pima 



