316 



U. S. NATIONAL MUSEUM BULLETIN 216 



PART 3 



Figures 172, 173. — Localities: 172 (left), Joppidium apicale; 173 (right), /. duhiosum. 



from mesopleurum, metapleurum, and propodeum except sometimes 

 for weak wrinkling on mesoplem'um of female and propodeum of male ; 

 basal carina of propodeum complete, usually strong and sharp but 

 sometimes weak and blunt. 



Black, with black wings. Head, mouth parts, and scape fulvofer- 

 ruginous, the occiput, vertex, and central and lower parts of frons 

 more or less brown or fuscous, especially in male; pedicel fulvous, dark 

 brown above; flagellum of male yellow, its apex a little darkened; 

 flagellum of female yellow, its basal two or three segments fulvous and 

 its apical 0.4 black; front and middle coxae dark brown; front and mid- 

 dle trochanters fulvous brown; front and middle femora fulvous; all 

 tibiae and tarsi yellow, the tarsi tinged with brown apicall}^; hind fe- 

 mur blackish brown, its apex tinged with yellow; apex of first two ter- 

 gites of male and basal half of second and following tergites of male 

 obscure dark brown; apical margin of second tergite of female, apical 

 part of third tergite of female, and all of fom-th and following tergites 

 of female brown. 



This is the only Nearctic Joppidium in which the female abdomen 

 has its basal half blacldsh and apical half brown. 



Specimens (26c?', 299): From District of Columbia (Washington); 

 Georgia (Stone Mountain); Kansas (Onaga); Kentucky; Maryland 

 (Chevy Chase Lake) ; Mississippi (4 miles south of Onward) ; Missouri 

 (Springfield, Van Buren in Ozark Mts., and Willard); North Carolina 

 (Asheville and valley of Black Mts.); Ohio (Cincinnati, Franklin Co., 

 and Lancaster); Pennsylvania (Mechanicsburg) ; South Carolina 

 (Greenville and Venus in Greenville Co.) ; Texas (College Station) ; and 

 Virginia (Barcroft, Chain Bridge near McLean, Falls Church and 

 East Falls Church, Glencarlyn, and Vienna). 



Dates of collection are from late spring to early fall. The earliest 

 and latest dates are: April 22 at College Station, Tex.; May 11 at 



