400 



U. S. NATIONAL MUSEUM BULLETIN" 216 



PAHT 3 



Head, body, and hind coxa marked with black, white, and fulvous 

 as in figure 334, b; palpi white; antenna black, the under half of scape 

 and a band on flagellum white; mesoscutum with a white stripe on 

 outer margin of its median lobe and another on inner margin of lateral 

 lobe; front and middle coxae and trochanters whitish with a fulvous 

 tinge ; femora and tibiae pale fulvous ; front and middle tarsi stramin- 

 eous, infuscate apically; hind tarsus of male white, the basal 0.4 of 

 first segment and apical 0.6 of last segment fuscous; hind tarsus of 

 female pale fulvous, the basal 0.4 of first segment medium fulvous, 

 and last segment entirely black. 



Specimens (42 cf, 189): From Florida (Gainesville, International 

 Airport at Miami, and Tampa) ; North CaroUna (Wake Co.) ; South 

 Carolina (Clemson, Columbia, and McClellanville) ; Tennessee 

 (Knoxville); and Texas (Harlingen, Laredo (in fruit from Mexico), 

 and Victoria). 



Collection dates are all from August to October, except for two 

 Florida records of the winter months. Unusually early and late 

 seasonal records are: January 1 at Miami, Fla.; February 15 at 

 Tampa, Fla.; August 3 in Cameron Co., Tex.; August 15 at Harlingen, 

 Tex., and at Clemson, S.C.; October 30 in Wake Co., N.C.; and 

 November 10 at Victoria, Tex. Finding the species only late in the 

 season in the northern part of its range suggests that this may be 

 another case where overwintering is south of the frost line and there 

 is a northward migration every season. 



One series is labeled as reared: cf , 39, from nest of Polistes sp., 

 Victoria, Tex., Nov. 10, 1914, J. D. Mitchell. According to unpub- 

 lished observations by Dr. R. L. Rabb in Wake Co., N.C., the biology 

 of P. stupidus is similar to that oi julvus {q. v.), except for an average 

 larger number of parasites per host. He found it usually parasitizing 



Figures 220, 221. — Localities: 220 (left), Pachysomoides stupidus; 221 (right), P.fuhus. 



