WASP GENUS CERCERIS — SCULLEN 391 



Distribution. — Very rare. Arizona, New Mexico, and Utah. 

 Prey record. — None. 

 Plant record. — None. 



21. Cerceris poculum, new species 



Figures 25, 124a,b,c 



Female. — Length 9 to 10 mm. Black and creamy yellow; normally 

 pitted; clothed with silvery hairs. 



Head slightly wider than the thorax; black except for large frontal 

 eye patches, the clypeus exclusive of the free border, patch on frons, 

 all of which are creamy yellow; clypeal border with a broad extension 

 at the base of the process; clypeal process broad and short with the 

 sides strongly curved downward, black along the border; mandibles 

 with two closely joined denticles subequal in size; antennae normal in 

 form, scape and peduncle black, flageUum amber below, dark above. 



Thorax black except for two elongate patches on the pronotum, 

 two spots on the scuteUum, the metanotum, and the tegulae, all of 

 which are creamy yeUow; tegulae smooth and not elevated; enclosure 

 faintly ridged transversely along the medial groove, sparsely pitted 

 laterally; mesosternal tubercle absent; mid- and hindlegs black basally 

 to near the apical ends of the femora, beyond which they are creamy 

 yellow except for an elongate patch of dark amber on each tibia and 

 the tarsi, which become light amber; hindlegs have coxae black, 

 trochanters creamy yellow, femora black, tibiae yellow with a dark 

 amber patch and tarsi amber; wings subhyaline except for the stigma, 

 which is amber. 



Abdomen black except for creamy-yellow bands on terga 1 to 5, 

 broadly emarginate on terga 2 to 5, two lateral patches on sternites 

 3 and 4; pygidium long, broader, and abruptly pointed basally, 

 gradually narrowing and rounded apically. 



AIale. — Unlaiown. 



Types. — The type female, taken 23 mi. NE. Douglas, Ariz., 4450 ft., 

 Aug. 1, 1946 (H. A. Scullen), is in the U.S. National Museum, no. 

 66159. Paratypes are as follows : 



Arizona: ?, Herford, Cochise Co. (W. M. Mann). Texas: ?, Alpine, 

 July 8, 1942 (H. A. Scullen); ?, Davis Mts., Jefif Davis Co., June 27, 1942 

 H. A. ScuUen). 



Distribution. — -Recorded only from southern Ai'izona and western 

 Texas. 

 Prey record. — None. 

 Plant record. — None. 



