WASP GENUS CERCERIS — SCULLEN 



501 



lobe of the clypeus with a prominent convexity; mandibles u-ith two 

 more or less fused denticles, the more basic one with a divided point 

 and tapering off as a low ridge toward the base of the mandible; 

 antennae with the terminal segment slightly curved; scape yellow and 

 the remaining segments fulvous. 



Figures 93-95.— Localities of: 93, C. occipitomaculata Packard; 94, C. sexta Say; 95, C. 

 stigmosdis Banks. 



Thorax black except for two separated patches on the pronotum, 

 the metanotum, and the tegulae, all of which are creamy yellow; 

 tegulae low and smooth; enclosure faintly ridged about 30° from 

 meson and with a faint medial groove; mesosternal tubercles, absent; 

 legs with all coxae black, forelegs black to near the center of the 

 femora, beyond which they are largely yellow, the midlegs yellow 

 except for a dark patch on the femora, the hindlegs yellow on the 

 trochanter and beyond except the apical half of the femora, a patch 

 on the apical end of the tibiae, and the four apical tarsal segments, 

 which are dark; wings subhyaline but slightly darker at the apex. 



Abdomen with subequal bands on terga 1 to 6, somewhat emarginate 

 and that on tergum 1 divided; venter dark except for lateral patches 

 on sternites 2, 3, and 4; pygidium with sides subparallel but with the 

 apical end slightly wider than the basal end. 



G. occipitomaculata Packard is close to C. nigrescens F. Smith. The 

 females can be separated by the form of the clypeal processes. The 

 prominent convex surface of the medial lobe of the clypeus on C. 

 occipitomaculata Packard will distinguish the male of that species. 



Types. — The type female of C. occipitomaculata Packard, from 

 Kansas (Norton), has not been located. Kecognition of this species 

 is based on specimens so labeled by E. T. Cresson and other earlier 

 workers. A neotype, from Hunt Co., Texas, is being designated by 

 the present writer and is to be deposited at the U.S. National Museum. 



