568 TJ. S. NATIONAL MUSEUM BULLETIN 216 



Female: Ground color fulvous, or blackish, or intermediate. Head, 

 mouth parts, and thorax with pale markings as in male, but the pale 

 markings stramineous rather than pale yellow and the mesoscutum 

 uniformly fulvous or blackish; scape and pedicel beneath partly stra- 

 mineous; flagellum blackish with a rather broad postmedian white 

 band basad of which it is narrowly stramineous beneath; trochanters, 

 tarsi, bases of tibiae, front side of front tibia, and extreme apex of 

 femora, stramineous, the rest of legs fulvous or in specimens with a 

 blackish ground color the coxae and hind legs are mostly blackish; 

 apical 0.4 ± of abdominal tergites paler than basal part; subgenital 

 plate stramineous, tinged with brown on apical 0.7 of lower edge; 

 wings hyaline, the apex of front wing fuscous. 



The normal ground color of the female is fulvous. In one specimen 

 from Livingston County, Mich., however, it is blackish, and in another 

 from the same locality intermediate between blackish and fulvous. 



Specimens: 9, Washington, D. C, June 20, 1948 (Washington). 

 d\ Bowie, Md., May 30, 1944, H. K. Townes (Washington.) 7d\ 9, 

 George Reserve, Livingston Co., Mich., June 24, 1956, H. K. Townes 

 (Townes). 9, George Reserve, Livingston Co., Mich., July 1, 1956, 

 H. K. Townes (Townes). 9, Delaware Water Gap, N. J., July 8 

 (Washington), tf 1 , 29, Bemus Point, N. Y., July 18, 1937, H. K. 

 Townes (Washington and Townes). 9, Millwood, N. Y., June 28, 

 1936, H. K. Townes (Townes). 9, Ithaca, N. Y., July 2, 1947 (Ottawa). 

 9, 6 Mile Creek, Ithaca, N. Y., July 21, 1939, P. P. Babiy (Townes). 

 cf, Black Mts., N. C, June 10 to 13, 1912, Benten Muller (Ithaca). 

 d\ reared from Anoplodera vittata in Tsuga canadensis, Inglenook, 

 Pa., emerged June 3, 1913, F. C. Craighead (Washington). 



This species occurs in the Alleghanian and Carolinian faunas. Our 

 specimens were collected in moist deciduous woods. 



4. Genus Spilopteron, new genus 



Figure 309,b 



Front wing 8 to 15 mm. long; clypeus rather short, "with a strong, 

 sharp, subapical transverse ridge; exposed portion of labrum about 

 0.4 to 0.8 as long as wide; occipital carina complete; flagellum long 

 and slender, its median segments about 2.0 as long as wide; inter- 

 cubitus opposite second recurrent, or distad of it by as much as 0.15 

 its length; nervellus broken near or a little above the middle; front 

 and middle tarsal claws with an acute accessory tooth near their 

 midlength; hind femur rather slender; hind tarsal claws simple; first 

 sternite with numerous long erect hairs on its swelling; ovipositor 

 apically without transverse ridges or with a very few, fine, widely 

 spaced ridges. See also the characters in the key. 



