. Bulletin - United States National Museum. Science. ICHNEUMON-FLIES, PART 2 : EPHIALTINAE 155 Figure 65.—Localities for Dolichomitus Female: Front wing 10 to 20 mm. long; face rather narrow, weakly narrowed ventrad, its punctures separated by about their diameter; median longitudinal carinae of propodeum ridgelike, subparallel, dis- tinct on the basal or more of propodeum; abdomen unusually long and parallel-sided; first tergite about as long as wide and about as long as second tergite; second tergite about as long as wide, about as wide at base as at ape
. Bulletin - United States National Museum. Science. ICHNEUMON-FLIES, PART 2 : EPHIALTINAE 155 Figure 65.—Localities for Dolichomitus Female: Front wing 10 to 20 mm. long; face rather narrow, weakly narrowed ventrad, its punctures separated by about their diameter; median longitudinal carinae of propodeum ridgelike, subparallel, dis- tinct on the basal or more of propodeum; abdomen unusually long and parallel-sided; first tergite about as long as wide and about as long as second tergite; second tergite about as long as wide, about 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 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
Size: 1861px × 1343px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
