WASP GENUS CERCERIS — SCULLEN 359 



Distribution. — ^From Kansas and eastern Colorado southwest 

 through Texas, Louisiana, New Mexico, and Arizona into Mexico. 



Prey record, — -None. 



Plant record. — Euphorbia marginata (Texas), Lepidium 

 (Arizona), Solidago sp. (Nebraska). 



3. Cerceris arizonella Banks 



Figure 3 

 Cerceris arizonella Banks, 1947, pp. 32-33. — ScuUen, 1951, p. 1005. 



Male. — 'Length 4 mm. Black with yellow markings except for 

 the face, which is cream colored. Band on tergum 2 somewhat 

 wider than the others. 



This species is known only from the type, which is close to finitima 

 Cresson. It may prove to be an abnormally small specimen of that 

 species. Until more positive characters for separating males are 

 found, the author will let it remain a vaUd species. 



Type. — The type male, from Tempe, Ariz., is at the Museum of 

 Comparative Zoology, no. 23538. 



Prey record. — 'None. 



Plant record. — -None. 



4. Cerceris blakei Cresson 



Figures 4, 110a,b,c 



Cerceris blakei Cresson, 1865, p. 121. — Packard, 1866, p. 61. — Cresson, 1887, 

 p. 282.— DaUa Torre, 1897, p. 454.— Bridwell, 1898, p. 209.— Ashmead, 

 1899, p. 295.— Banks, 1912a, p. 26.— ScuUen, 1951, p. 1005.— Krombein, 

 1952c, p. 336; 1954b, p. 235; 1955, p. 234.— ScuUen, 1961, p. 45.io 



Cerceris elegans F. Smith, 1856, p. 467. — Cresson, 1865, p. 131. — Packard, 1866, 

 p. 64.— Cresson, 1887, p. 282.— DaUa Torre, 1890, p. 200.— Ashmead, 1899, 

 p. 295. 



Cerceris blackii [sic] Schletterer, 1887, p. 487. 



Female. — Length 9 to 10 mm. Black with reddish-amber mark- 

 ings, the amber markings becoming yellow centrally in certain areas; 

 deeply and closely pitted; clothed with very short silvery hairs. 



Head about one-thu'd wider than the thorax, black except sides of 

 face, front, dorsal surface of the clypeal process, and small spots 

 back of the compound eyes, all of which are yellow, and the clypeus 

 below the process, which is amber; clypeal border sinuate, depressed 

 medially; clypeal process scoop shaped with lateral sides subparallel 

 and apical border smooth and uniformally curved ; mandibles with two 



1" Cerceris elegantissima Schletterer, 1887, was a new name proposed for 

 Eucerceris elegans Cresson and not for C. elegans F. Smith as stated by ScuUen 

 (1961, p. 45). 



