206 U. S. NATIONAL MUSEUM BULLETIN 216 



Wallace); Ohio (Clifton and Montgomery Co.); Pennsylvania (Char- 

 leroi in Washington Co. and Valley Forge) ; South Carolina (Columbia, 

 Greenville, and McClellanville) ; Tennessee (Great Smoky Mountains 

 National Park at 2,000 ft.); Texas (Brazos Co., Dallas Co., Hidalgo 

 Co., and Val Verde Co.); Virginia (Arlington, Dunn Loring, Falls 

 Church, and Vienna) ; and West Virginia (Cheat Mt. at 2,000 ft. in 

 Randolph Co.). 



The collection dates are distributed through most of the growing 

 season, with concentrations in mid-spring and in fall and late sum- 

 mer. Unusually early and late dates of collections are: March 22 in 

 Manatee Co., Fla.; March 26 in Dallas Co., Tex.; April 11 in Brazos 

 Co., Tex.; April 21 at Columbia, S. C. and at Raleigh, N. C; May 13 

 at Washington, D. C; October 20 and November 3 at Takoma Park, 

 Md. ; October 31 at Athens, Ga. ; and October 27 at Mayo, Md. There 

 is one reared specimen in the material as follows: cf, emerged from 

 cocoon found under bark, Vienna, Va., February 1938, J. C. Bridwell 

 (Washington) . 



One of the female specimens was taken at light. A female observed 

 by us was seen to flip its wings like a psammocharid while crawling 

 along a dead branch. 



This species belongs to the Carolinian and Austroriparian faunas. 

 Adults occur mostly from mid-spring to mid-fall. 



13. Genus Alophosternum 



Figure 291,b 



Alophosternum Cushman, 1933, Proc. U. S. Nat. Mus., vol. 82, p. 7. Type: 

 Alophosternum foliicola Cushman; original designation. 



Front wing 2.7 to 6.0 mm. long; body rather short and stout; face, 

 frontal orbits, and clypeus more or less white; clypeus strongly con- 

 vex but its apex rather strongly impressed, the apical margin strongly 

 concave; occipital carina present laterally, absent above; hairs on 

 mesocutum moderately dense, evenly distributed; prepectal carina 

 absent (present in other Nearctic Pimplini except Dolichomitus 

 cuspidatus) ; submetapleural carina complete ; propodeum of moderate 

 length, without median longitudinal carinae ; areolet obliquely triangu- 

 lar or subtriangular, receiving second recurrent vein at or basad of its 

 outer corner; nervellus broken a little below the middle; basal tooth 

 on tarsal claws of female sometimes lacking on the hind claws (present 

 on all claws of females in all other Nearctic genera of Pimplini except 

 Perithous); first tergite moderately long, tapered basally, its lateral 

 and median longitudinal carinae not strongly developed; third and 

 fourth tergites very short, with weak, transverse, subbasal and pre- 

 apical impressions, their impunctate apical band occupying about 0.25 



