WASP GENUS CERCERIS — SCULLEN 505 



Amer" and "63/45," the latter of which Benson indicated is an 

 abbreviation for the British Museum Register No. 1963-45. 



Prey record. — None. 



Plant record. — None. 



69. Cerceris sexta Say 



Figures 94, 174a,b,c 



Cerceris sexta Say, 1837, p. 382.— Smith, F. 1855, p. 465.— LeConte, 1883, p. 7G3.— 

 Cresson, 1865, p. 119.— Packard, 1866, p. 61.— Patton, 1879, p. 361.— Cres- 

 son, 1875, p. 382; 1887, p. 282.— Schletterer, 1887, p. 502.— Ashmead, 1890, 

 p. 32.— Dalla Torre, 1897, p. 476.— Bridwell, 1898, p. 209.— Ashmead, 1899, 

 p. 295.— Viereck, 1906b, p. 234.— Smith, H. S., 1908, p. 365.— Banks, 1913b, 

 p. 424.— Mickel, 1917b, p. 450.— Banks, 1947, p. 10.— Sculleu, 1951, p. 1010; 

 1960, p. 79; 1961, p. 47. 



Cerceris hiungulata Cresson, 1865, p. 118. — Packard, 1866, p. 61. — Cresson, 1887, 

 p. 282.— Schletterer, 1887, p. 487.— Ashmead, 1890, p. 32.— Dalla Torre, 

 1897, p. 454.— Ashmead, 1899, p. 295.— Viereck, 1906b, p. 234.— Scullen, 

 1951, p. 1005; 1960, p. 79. 



Cerceris orphne Banks, 1947, pp. 15-16. — Scullen, 1951, p. 1009 (new synonymy). 



Female. — Length 15 mm. Black with yellow markings lightly 

 bordered with amber; punctation and pubescence average. 



Head subequal in width to the thorax; face largely yellow, large 

 yellow areas on genae, dark amber band on the vertex back of ocelli, 

 clypeal border with a broad medial extension bordered laterally by a 

 corina ending in a denticle, and between these two denticles a placoid- 

 like membrane; clypeal process lunar shaped with the horns very long, 

 curved, and acute; mandibles with three small denticles medially 

 located, the more apical one widely separated from the medial one; 

 antennae normal in form; scape yellow and the flagellum ferruginous, 

 becoming slightly darker apically. 



Thorax black except for a deep emarginate band on the pronotum, 

 the scutellum, the metanotum, large areas on the propodeum, patch 

 on the pleuron, and the tegulae, all of which are yellow; tegulae low 

 and smooth; enclosm'e black, heavily ridged longitudinally; meso- 

 sternal tubercles absent; legs amber; wings subhyaline. 



Abdomen with tergum 1 largely yellow; terga 2 to 5 with broad 

 yellow bands deeply emarginate with fuscous, the band becoming 

 somewhat broader on tergum 2; venter dark amber to fuscous, 

 becoming lighter on sternite 2; pygidium with sides converging 

 slightly to a truncate apical end. 



Male. — ^Length 15 mm. Black with yellow markings; punctation 

 and pubescence average. 



Head subequal to thorax in width; face yellow; small yellow spots 

 back of eye bordered with fuscous; clypeal border extension showing 

 two lateral low denticles with a barely evident elevation mesad of 



