128 



U. S. NATIONAL MUSEUM BULLETIN 216 



lary palpus; extreme hind corner of pronotum fulvous; tegula stramin- 

 eous ; front and middle legs fulvous ; hind coxa and trochanters fulvous, 

 the second hind trochanter a little paler; hind femur fulvous, its ex- 

 treme apex faintly infuscate; hind tibia and tarsus brown, the tibia 

 paler basally. 



The Japanese D. elongalus (Uchida) is very similar to this species 

 but has the ovipositor only about 4.5 as long as the front wing and 

 the abdomen mostly polished, with very little fine aciculation. 



Figure 52. — Localities for 

 Dolichomitus cephcloies. 



We have seen the type of E. cephalotes but have not compared 

 Nearctic specimens with it directly. 



Specimens: 9, Hardisty, Alta., June 1, 1937, E. H. Strickland 

 (Townes). 59 (one of them the type of /. watsoni), Aylmer, Que., 

 June 15, 20, 22, and 23, 1924 and June 4, 1925, C. B. Hutchings 

 and H. L. Viereck (Ottawa). 9, Aylmer, Que., June 8, 1925, H. L. 

 Viereck (Townes). 9, Laniel, Que., June 26, 1944, A. R. Brooks 

 (Ottawa). 9, Montreal, Que., June 4, C. J. Ouellet (Ithaca). 9, 

 Vawn, Sask., June 10, 1942, M. Perillot (Ottawa). 



This is a rare species. It is known from Quebec, Saskatchewan, 

 Alberta, and Europe. Adults occur in June. 



IV. IRRITATOR GROUP 



Median segments of male flagellum not widened; pronotum without 

 a white stripe along its upper margin, but its hind corner often white 

 or pale; prepectal carina ending above ventral 0.15 of hind margin of 

 pronotum, often reaching dorsad to middle of hind margin of pronotum 

 where it curves forward toward front margin of mesopleurum; 

 lower half of mesepimeron almost bare, with a few hairs along hind 

 margin above; nervellus broken above the middle; ovipositor sheath 

 1.2 to 2.8 as long as front wing; dorsal lobe of tip of lower valve of 



