ICHNEUMON-FLIES, PART 2 : EPHIALTINAE 



249 



This species is transcontinental in the Transition zone, but is rela- 

 tively scarce in the western part of the country. Adults occur from 

 late spring to early fall. 



2. Polysphincta limata Cresson 



Figure 324,b 



Polysphincta limata Cresson, 1870, Trans. Amer. Ent. Soc, vol. 3, p. 150; $ . 

 Type: 9 , Massachusetts (Philadelphia). 



Front wing of male 3.7 to 5.8 mm. long, of female 4.7 to 7.0 mm. 

 long; hairs on mesoscutum rather sparse and not evenly distributed, 

 the central part of lateral lobe of mesoscutum with only sparse hairs 

 or none; metapleurum evenly covered with moderately dense hairs; 

 submetapleural carina strong and complete; propodeum subpollished, 

 near its midlength weakly mat and weakly rugulose; median eongi- 

 tudinal carinae of propodeum blunt and rather weak, near midlnngth 

 of propodeum somewhat obscured by rugulosity; pleural carina of 

 propodeum weak and incomplete; intercubitus about 0.4 as lowg as 

 second abscissa of cubitus; first tergite about 1.2 as long as wide; 

 median swellings and apical 0.25 of second through fourth tergites pol- 

 shed, the rest faintly mat to subpolished. 



Figure 106. — Localities for 

 Polysphincta limata. 



Male: Black. Apical half of clypeus brownish; mandible light 

 brown, its base and apex darker; palpi, tegula, and hind corner of 

 pronotum white; apical margin of scape and pedicel stramineous in 

 front; flagellum dark brown, paler below; scutellum and sometimes 

 meso thorax fulvoferruginous or stained with this color; trochanters 

 and front and middle coxae whitish, the coxae basally and hind side 

 of first hind trochanter stained with fulvous; femora fulvous, stramin- 

 eous at apex, the hind femur somewhat infuscate preapically; front 



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