WASP GENUS CERCERIS — SCULLEN 



381 



pitted; enclosure heavily rugose transversely; legs yellow except for 

 small patches of amber on the following: coxae, all femora, the 

 hindtibiae, and hindtarsi ; wings subhyaline except the stigma, which 

 is dark amber. 



Abdomen vtdth broad yellow bands on terga 1 to 6, those on terga 

 5 and 6 emarginate; venter amber with yellow bands on sternites 2 

 to 4 and two yellow patches on stemite 5 ; pygidium with sides convex 

 and both ends subtruncate. 



The extent of the yellow markings vary in both sexes. This is 

 especially true of the yellow line on the genae, venter, and scutellum. 

 Smaller patches may disappear. The subspecies citrina has far more 

 yellow than the typical form C . finitima finitima Cresson. 



Types. — The type female, from Riverside, Cahf., Aug. 29, 1926, on 

 Polygonum lapathifolium (P. H. Timberlake), and the allotype male, 



Figures 18-20. — Localities of: 18, C. finitima citrina Scullen; 19, C finitima vierecki Banks; 

 20, C. irene Banks. 



from Riverside, Calif., Aug. 26, 1927 (P. H. Timberlake), are at the 

 Cahfornia Academy of Sciences. Paratypes are as follows: 



Califoenia: 9, Antioch, Sept. 18, 1938 (J. W. MacSwain); ?, Claremont 

 (Baker); 9, Colton, Aug. 10, 1951 (J. C. HaU) ; 2 99, Davis, Aug. 24, 1939 

 (G. E. Bohart) ; 9 , Davis, July 11, 1951 (E. I. Schlinger) ; cf, Davis, July 11, 1954 

 (J. 0. Downey); cf, Davis, Aug. 20, 1950 (R. C. Bechtel); cT, Lindsay, 1909, on 

 Asclepias (W. A. Davidson) ; 9 , Patterson, Stanislaus Co., June (T. F. Leigh) ; 

 9 , Riverside, Sept. 23, 1924, on annual Eriogonum (P. H. Timberlake) ; 9 , 

 Riverside, Aug. 16, 1927, on Eriogonum gracile (P. H. Timberlake); 9 , Riverside, 

 Aug. 29, 1926, on Polygonum lapathifolium (P. H. Timberlake) ; 9 , Riverside, 

 Oct. 1, 1928, on Euphorbia albomarginata (P. H. Timberlake) ; 9 , Riverside, 

 July 17, 1940 (C. Daramers) ; cf , Riverside, Sept. 20, 1933, on Erigeron linifolius 

 (P. H. Timberlake); d', Santa Barbara, June 1907 (W. M. Gififard); cf, Visalia, 

 1927, on privet (P. R. Jones). 

 742-463—65 — —4 



