454 



PROCEEDINGS OF THE NATIONAL MUSEUM 



Abdomen as in the nominate subspecies except the markings are 

 white and the venter is immaculate. 



Types. — The type female, from Jacob's Cabin, Hart Mt., Lake Co., 

 Oreg., 6600 ft., July 16, 1937 (Bolinger and Jewett), in the U.S. 

 National Museum, no. 66171. Paratypes are as follows: 



Oregon: 9, Jacob's Cabin, Hart Mt., Lake Co., 6600 ft., July 16, 1937 (Bo- 

 linger and Jewett); 9, Hart Mt., July 16, 1937. Nevada: 9, Emigrant Pass, 

 Eureka Co., June 19, 1952 (E. I. Sclilinger). 



Distribution. — This subspecies has been taken only on Hart Mt., 

 Lake Co., Oreg., and one specimen in Nevada as indicated above. 

 Prey record. — None. 

 Plant record. — None. 



44c. Cerceris aequalis idahoensis, new subspecies 



Figures 65, 147a,b,c 



Female. — Length 11 mm. Black with creamy-yellow markings; 

 structurally like the nominate subspecies aequalis aequalis Provancher 

 except for the more acute clypeal process and the much lighter and 

 more limited yellow markings. 



Head with medium-sized frontal eye patches, patch on the clypeal 

 process, spot back of the eye, base of mandibles and spot on the scape, 

 all of which are creamy yellow ; clypeal border as in the nominate sub- 

 species; mandibles with the basal denticle somewhat more distinct 

 than in the nominate subspecies but much smaller than the other 

 denticles. 



Thorax black except for two small variable spots on the pronotum, 

 small evanescent spots on the metanotum, and small patches on the 

 tegulae, all of which are creamy yellow; legs black to the apical ends 



Figures 65-67. — Localities of: 65, C. aequalis idahoensis Scullen; 66, C. alceste Mickel; 

 67, C. astarte Banks. 



