54 



U.S. NATIONAL MUSEUM BULLETIN 2 68 



Head about one ninth wider than the thorax; black except for 

 most of the face, large elongate patches back of the eyes, two large 

 oval spots on the vertex back of the ocelli, most of the mandibles 

 and a small patch on the scape, all of which are yellow; clypeal 

 border with a medial rounded black extension, flanked on each side 

 by a low black denticle on the medial lobe of the clypeus; mandibles 

 with one large blunt denticle; antennae normal in form, ferruginous 

 below and darker above. 



Thorax black except for a divided band on the pronotum, a small 

 patch on the posterior lobe, a trace on the mesoscutum, an emarginate 

 band on the scutellum, the entire enclosure, a reversed J-shaped 

 patch on the propodeum, two large angular patches on the meso- 

 pleiu-on and two small spots on the metapleuron, three pairs of 

 patches on the sternum and a small patch on the tegula, all of which 



Figure 33. Mexico. 

 E. pundifrons puncti- 

 frons (Cameron), E. 

 pundifrons cavagna- 

 roi, new subspecies 



are yellow; tegulae normal in form; the enclosure closely pitted 

 except along the basal margin, and with a light medial groove; meso- 

 sternal tubercles absent; legs largely yellow but with dark fuscous 

 areas on all coxae, trochanters, femora and on the mid and hind 

 tibiae; wings light fulvous; 2nd submarginal cell not petiolate. 



Abdomen with yellow bands on terga 1 to 5 deeply emarginate 

 and the lateral expansion of the bands of terga 3, 4, and 5 with dark 

 patches ; a yellow patch on terga 6 laterad of the pygidium ; first four 

 sterna largely yellow; fifth sternum with lateral yellow areas; pygidium 

 with sides convex, apex rounded, and base converging. 



This unique female is structurally like the female of E. pundifrons 

 Cameron except for the more extended yellow parts. In the nominate 

 subspecies the yellow of the scutellum is separated into two lateral 

 large spots, the enclosure is black except for two elongate yellow 

 spots near the base, and the bands on the terga are much reduced. 



Male. — Unknown. 



