WASP GENUS CERCERIS — SCULLEN 355 



1. Cerceris acanthophila Cockerel! 



Figures 1, 108a,b,c 



Cerceris acanthophila Cockerell, 1897, p. 135. — Ashmead, 1899, p. 296. — Viereck 

 and Cockerell, 1904, p. 138.— Viereck, 1906b, p. 234.— Banks, 1947, p. 30.— 

 Scullen, 1951, p. 1004; 1960, p. 75. 



Cerceris minax Mickel, 1917a, p. 339. — Banks, 1947, p. 34. — Scullen, 1951, p. 

 1009. 



Cerceris huachuca Banks, 1947, p. 29. — Scullen, 1951, p. 1008. 



Female. — ^Length 8 to 9 mm. Black with yellow to creamy-white 

 markings, normally pitted, clothed with short silvery hairs. 



Head sUghtly wider than the thorax; front creamy white below 

 antennae except apical borders, which are dark; vertex, occiput, and 

 genae black except for small spots back of compound eyes, which are 

 creamy white; clypeal border sHghtly sinuate; cl3T)eal elevation close 

 to the anterior border, very short and subequal in width to the exten- 

 sion of the clypeal border, shghtly emarginate; mandibles with two 

 separated, centrally located subequal denticles; yellow at the base 

 becoming dark amber apically; antennae normal in form, creamy- white 

 patch on the scape, pedicel dark amber, flageUum light amber below, 

 dark amber above. 



Thorax black except for two elongate patches on the pronotum, the 

 metanotum, and the tegulae, which are creamy white; propodeum im- 

 maculate, heavily and closely pitted except for the enclosure, which is 

 moderately rugose; mesosternal tubercle small and black; legs black 

 except for apical ends of femora, fore- and midtibiae, fore- and mid- 

 tarsi, basal two-thirds of the hindtibiae, and basal third of the hind- 

 tarsi, which are hght yellow; wings subhyaline, stigma medium dark 

 (hghter than is usual in the group). 



Abdomen: terga 1 to 5 black with creamy-white bands deeply 

 emarginate on 2 to 5; venter black except lateral yellow spots on 

 sternites 3 and 4 (immaculate in some specimens) ; pygidium pyrif orm, 

 widest near the base, narrowed apically with a cluster of small bristles 

 on each side inserted on the apical sternite. 



Male. — Length 7 nmi. Black with creamy-white markings; 

 punctation and pubescence average. 



Head shghtly wider than the thorax; black except for the entire 

 face, basal part of mandibles, and the scape, all of which are creamy 

 white; peduncle and flagellum ferruginous above and hght fulvous 

 below; three cljrpeal border denticles distinct but not prominent; hair 

 lobes narrow; mandibles smooth with a shght medial elevation. 



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

 scutellum, the metanotum, a small spot on the pleuron, and a patch 

 on the tegulae, all of which are creamy white; mesosternal tubercle 



