WASP GENUS CERCERIS — SCULLEN 453 



tegulae, all of which are yellow; tegulae low and smooth; enclosure 

 finely rugose with the ridges running at an angle to the base; meso- 

 sternal tubercles absent; legs largely yellow with the two basal seg- 

 ments, base of femora, and apical end of the midfemora black; wings 

 subhyaline, slightly clouded apically. 



Abdomen with a broad divided band on tergum 1, broad deeply 

 emarginate bands on terga 2 to 5; broad bands on sternites 2 to 4, 

 and a divided broad band on stemite 5 ; pygidium wedge shaped, with 

 the basal end broad and the apical end very small and rounded. 



Male. — Unrecognizable. In the aequalis-varians complex. 



The female of C. aequalis Provancher closely resembles the female 

 of C. varians Mickel in size, structure, and color pattern, from which 

 it is separated easily by the form of the clypeal process. So far the 

 present author has been unable to distinguish the males. 



Types. — The lectotype female of C. aequalis Provancher, from 

 California, is at the U.S. National Museum, no. 1974. The type 

 female (not a male as indicated in the original description), of C. vici- 

 noides Viereck and Cockerell, from Pecos, N. Mex., June 25, 1903, on 

 Fallugia (W. P. Cockerell), is at the Philadelphia Academy of Natural 

 Sciences, no. 10387. The type female of C. psamafhe Banks, Lee Co., 

 Tex. (Birkmann), is at the Museum of Comparative Zoology, Har- 

 vard, no. 13780. 



Distribution. — The nominate subspecies is taken mostly in 

 California and Oregon, with Hmited records from adjoining states. 



Prey record. — None. 



Plant record. — Achillea sp. (Oregon), Anaphalis margaritacea 

 (CaUfornia), Ceanothus jendleri (Arizona), Eriogonum (California, 

 Oregon), Lotus glaber (CaUfornia), Ranunculus sp. (California). 



44b. Cerceris aequalis bolingeri, new subspecies 



Figures 64, 146a,b,c 



Female. — Length 11-12 mm. Black with white to creamy-white 

 markings; punctation fine and not crowded; pubescence average; 

 like nominate subspecies C. aequalis aequalis Provancher in all re- 

 spects except as indicated. 



Head markings white; clypeal process almost verticle to the plane 

 of the face, much longer than on the nominate subspecies, with sides 

 subparallel and the apical end rounded. 



Thorax color pattern and structures as in the nominate subspecies 

 except colors are white to creamy white; legs are immaculate to the 

 apical ends of all femora, remaining segments white and black in 

 variable amounts. 



