WASP GENUS CERCERIS — SCULLEN 491 



ferruginous; a darker area may appear on the dorsal surface of the 

 third femora; wings subhyaline with a clouded area on the apex. 



Abdomen with the darker parts more or less ferruginous and the 

 markings yellow; tergum 1 with lateral yellow patches; tergam 2 

 with a broad yellow band and a slight emargination of ferruginous; 

 terga 3, 4, and 5 yellow with broad and deep emarginations of ferrugi- 

 nous, tergum 6 largely yellow; venter largely dark ferruginous with 

 emarginate bands of yellow on sternites 2 to 5, and traces of yellow 

 on 6; pygidium with sides slightly diverging apically and the apical 

 end broadly rounded. 



The principal variation is the extent of the colors. This is espe- 

 cially true with the terga, where the yellow may cover the terga com- 

 pletely or be deeply emarginate. 



C. morata Cresson is close to C. vicina Cresson. The females may 

 be separated by the form of the clypeal process. The males are 

 indistinguishable where then* ranges overlap. 



C. morata Cresson also is related closely to C. clypeata Dalilbom, 

 which it replaces in the South Central States. It possibly should be 

 considered a subspecies of C. clypeata Dahlbom. 



Types. — 'The type female of C. morata Cresson, from Texas (Belf- 

 rage), is at the Philadelphia Academy of Natm^al Sciences, no. 1944. 

 The type female of C. nasica Viereck and Cockerell, from New Mexico 

 (F. H. Snow), is at the Philadelphia Academy of Natural Sciences, 

 no. 10382. 



Distribution. — C. morata Cresson has been taken mostly in 

 Texas, New Mexico, and Arizona. It is recorded as far north as 

 Utah and Kansas and south into Mexico. 



Prey record. — None. 



Plant uncord.— -Asclepias latifolia (Texas), cotton (Arizona), 

 Lepidium sp. (Arizona), Melilotus alba (Kansas), Wislizenia sp. 

 (Arizona), Zizyphus lycioides (Arizona). 



62. Cerceris nebrascensis H.S. Smith 



Figures 88, 168a, b,c 



Cerceris nebrascensis H. S. Smith, 1908, p. 368.— Mickel, 1917b, p. 451.— ScuUen, 

 1951, p. 1009. 



Female. — Length 10 to 12 mm. Black with creamy-yellow and 

 fulvous markings; punctation average; pubescence very short. 



Head subequal in width to thorax; black except for large frontal 

 eye patches, large patch on the clypeal process, and base of mandibles, 

 all of which are creamy yellow; clj^Deal border with four denticles, 

 the medial pair being indistinct; clypeal process sHghtly longer than 

 broad with the free apical margin shghtly emarginate; mandibles 



