184 



U. S. NATIONAL MUSEUM BULLETIN 216 



Figure 108. — Localities 

 Exochus turgidus. 



for 



Specimens: 9, reared from Dioryctria auranticella, Patricks Creek, 

 Calif., June 9, 1916, Miller and Paterson (Washington). 29, "Lar- 

 kins," Fla., S. Graenicher (Washington and Townes). cf , 29, reared 

 from D. amatella, New Orleans, La., T. E. Snyder (Washington and 

 Townes). cf, reared from D. reniculella, Camp Borden, Ont., 

 emerged July 13, 1942 (Ottawa), cf, reared from D. reniculella, 

 Hagar, Ont., emerged July 16, 1942 (Ottawa), cf , reared from D. 

 reniculella, Jamot, Ont., emerged July 20, 1942 (Ottawa), cf, 

 "spruce," emerged July 28 (Ottawa), cf , reared from D. reniculella, 

 Sutherland, Sask., emerged Sept. 6, 1938 (Ottawa), cf , reared from 

 Petrova albicapitana, "Wood Co.," June 10, 1953, Benesh (Washing- 

 ton). 9, Vienna, Va., Nov. 18, 1913, R. A. Cushman (Washington). 

 cf , Trittau, near Hamburg, Germany, September 1945, G. Heinrich 

 (Townes). 



This species occurs from Ontario to Florida west to California, and 

 also in Europe, but is scarce in collections. It has been reared from 

 Petrova albicapitana and from three species of Dioryctria. 



III. PICTUS GROUP 



Front wing 3.5 to 5.2 mm. long; head rather deep, with long sloping 

 temple; face rather narrow, rather strongly convex in profile and more 

 strongly convex transversely, its interantennal process rather broadly 

 triangular, with an apical angle of 90 to 135 degrees; frons weakly 

 swollen centrally; cheek long, about 1.0 as long as basal width of 

 mandible; occipital carina absent above and below, usually present 

 laterally as a fine weak carina (present thus in the three Nearctic 

 species); median half of clypeal margin truncate; head black, ex- 

 tensively marked with pale j^ellow, the face, broad frontal orbits 

 continuous to (or rarely interrupted) and expanded at top of eye, 

 cheek, more or less of hind orbit and lower part of temple, clypeus, 

 and mouth parts usually pale yellow, or in the female the face largely 



