30 



U.S. NATIONAL MUSEUM BULLETIN 2 68 



12. Eucerceris ferruginosa Scullen 



Figures 15, 70 a, b, c 



Eucerceris ferruginosa Scullen, 1939, pp. 19, 45-46, figs. 29, 69, 102, 149; 1948, 

 pp. 159, 178; 1951, p. 1011. 



Type. — ^The holotype of E. ferruginosa Scullen is in the California 

 Academy of Sciences. It was taken at Angeles Bay, Gulf of California, 

 June 26, 1921 (E. P. Van Duzee). 



Distribution.— Since the description of this species from three 

 specimens in 1939 (p. 45) a limited number of additional specimens 

 have come to the ■^Titer's attention. All of these are from the south- 

 western desert areas, mostly from California and Baja California, 

 Mexico, except for the two specimens recorded from near Winne- 

 mucca, Nev. 



Figure 15. Southwestern U.S. and Baja California. 

 E. ferruginosa Scullen 



California: 9, Borrego, San Diego County, Apr. 24, 1954 (J. G. Rosen); 

 9 , same locality, Apr. 25, 1954, at Croton calif ornicus (P. D. Hurd) ; 2 ? ? , 

 Brown, Inyo County, June 4, 1939, at Eriogonum mohavense (R. M. Bohart) ; 

 29 9, Llano, July 8, 1956 (Simonds); 9i Mojave desert north of Palmdale, 

 June 22, 1931 (F. E. Lutz); 6 9 9 , 7 mi. east Mojave, Kern County, Sept. 30, 

 1963 (R. L. Westcott) ; 4 9 9 , same locality and date (L. Stange) ; 9 , Yermo, 

 San Bernardino County, May 31, 1941 (J. Wilcox); 9, same locality, Sept. 7, 

 1952, at Cleonella obtusifolia (R. Snelling) ; Nevada: 9 , Alamo, Lincoln County, 

 June 26, 1958 (F. D. Parker); 2 9 9 , 6. mi N., Winnemucca, Humboldt County, 

 June 20, 1962 (R. W. Lauderdale). 



Mexico: 29 9, Angeles Bay, Gulf of California, June 26, 1921 (E. P. Van 

 Duzee); 9, 28 mi. S., El Areo, Rancho Santa Marguerita, Baja California, 

 July 3, 1960 (A. E. Mickelbacher) ; 6 9 9 , 20 mi. N., Mesquital, Baja California, 

 Sept. 27, 1941 (Ross and Bohart). 



The male of E. ferruginosa Scullen is still unrecognized. On Sept. 30, 

 1963 R. L. Westcott took a series of six females of this species 7 mi. E. 



