ICHNEUMON-FLIES, PART 2'. EPHIALTINAE 



299 



of mandible (about 0.25 to 0.45 as long as basal width of mandible in 

 the other Nearctic species) ; flagellum strongly enlarged apically, the 

 sixth segment from apex about 0.9 as long as wide; punctures on meso- 

 scutum and mesopleurum rather fine and weak; notaulus absent; 

 propodeum short, its median longitudinal carinae extending about 

 0.25 its length; front tarsal claws of female with a large, broad, post- 

 median tooth; first tergite exceptionally flat above; third tergite about 

 0.8 as long as wide; second through seventh tergites with moderate 

 depressions and elevations; ovipositor sheath about 1.15 as long as 

 first tergite. 



Black. Palpi white; antenna whitish to pale stramineous, blackish 

 brown above; tegula and hind corner of pronotum white; front and 

 middle legs of male white; front legs of female white, the coxa basally 

 and the femur behind tinged with pale fulvous; middle coxa and femur 

 of female fulvous, the femur white at apex; middle trochanters, tibia, 

 and tarsus of female white, the first trochanter pale fulvous behind; 

 hind coxa and femur fulvous; first trochanter of hind leg mostly white 

 in male, fulvous in female; second trochanter of hind leg of both sexes 

 white; hind tibia white, its base rather narrowly and weakly infuscate, 

 its apex fuscous; hind tarsus white, its segments narrowly blackish at 

 apex, its fourth segment entirely blackish. 



Figure 133. — Localities for 

 Itoplectis fustiger. 



In 1940 (loc. cit.) this species was thought to be only a Nearctic 

 variant of the European Itoplectis clavicornis Thomson, 1889. It is 

 now considered to be a distinct species, differentiated by the more 

 elongate body and flagellum, entirely fulvous hind coxa, less fuscous 

 at base of hind tibia, and less fulvous on front and middle legs. 



Type: 9, in rich woods of stream bottom, between first and second 

 reservoirs of Six Mile Creek, Ithaca, N. Y., June 2, 1936. H. Townes 

 (Washington, USNM 63712). 



