ICHNEUMON-FLIES, PART 2 : EPHIALTINAE 



155 



Figure 65. — Localities for 

 Dolichomitus imperator. 



Female: Front wing 10 to 20 mm. long; face rather narrow, weakly 

 narrowed ventrad, its punctures separated by about 1.5 their diameter; 

 median longitudinal carinae of propodeum ridgelike, subparallel, dis- 

 tinct on the basal 0.4 or more of propodeum; abdomen unusually long 

 and parallel-sided; first tergite about 2.5 as long as wide and about 0.95 

 as long as second tergite; second tergite about 2.0 as long as wide, 

 about 0.85 as wide at base as at apex; third tergite mat with fine, ir- 

 regular, transverse aciculation, its tubercles rather flat, long-oval, 

 covered with small, indistinct, weak punctures whose interspaces are 

 about equal to their diameter; ovipositor sheath about 2.25 as long as 

 front wing; tip of lower valve of ovipositor as in figure 330,g. 



Black. Clypeus and mandible stained with ferruginous; palpi 

 brown, their basal segments mostly blackish; tegula and small hind 

 corner of pronotum fulvous; front and middle legs fulvous, their femora 

 apically in front and their tibiae in front yellowish fulvous; hind coxa, 

 trochanters, and femur fulvous, the apex of femur infuscate, its apical 

 margin paler; hind tibia and tarsus dark reddish brown, the tibia 

 fulvous basalry; wings often tinged with reddish brown. 



The long, narrow abdomen with very long first tergite, fine, weak, 

 irregular aciculation, and fine weak punctures are distinctive of fe- 

 males of this species. The length and slenderness of the abdomen are 

 variable, however, and when the abdomen is relatively short and stout 

 the ovipositor tip and the shape and punctation of the face are needed 

 for confirmation of a determination. The male is most easily dis- 

 tinguished by its tapered genital clasper and the scape that has only its 

 apical margin pale. 



Specimens (138c?, 2849): From Alaska (Glacier near Skagway at 

 6,000 ft. and Seward); Alberta (Banff, Beaverlodge, Wabamun, and 

 Waterton Lakes National Park) ; Arizona (near Alpine, Flagstaff, 

 Grand Canyon, and Mount Lemmon in the Santa Catalina Mts. at 

 9,150 ft.); British Columbia (Adams Lake, Blackwater in Manning 



