ICHNEUMON-FLIES, PART 2\ EPHIALTINAE 389 



lb. Podoschistus vittifrons vittifrons (Crcsson) 



Xorides vittifrons Cresson, 1868, Canadian Ent., vol. 1, p. 37; 9 • Type: 9 , 

 London, Ont. (Philadelphia). 



Black. Frontal orbit, face of male, more or less of face of female, 

 palpi, collar (entirely or with a median interruption), stripe on lower 

 front margin of pronotum of male, stripe the length of upper margin 

 of pronotum, tegula, sometimes a spot on subtegular ridge, upper part 

 of mesepimeron, apical half of scutellum, postscutellum, front and 

 middle coxae and trochanters of male, and narrow apical band on 

 tergites, white; front and middle coxae and trochanters of female 

 fulvous, the coxae white basally on the outer side and the trochanters 

 often partly whitish; hind coxa fulvous with an elongate, dorsobasal 

 whitish spot; front and middle femora fulvous, white at apex and 

 whitish in front; front and middle tibiae brownish, whitish at base, 

 apex, in front, and behind, more extensively so in male; tarsi fuscous, 

 the hind tarsus darkest; hind first trochanter fulvous below, the rest 

 infuscate; hind second trochanter of male mostly white, of female 

 white behind, brown above, and the rest fulvous; hind femur fulvous, 

 infuscate at base and apex; hind tibia fuscous, its base white. 



Specimens (27 cf, 509): From Georgia (Atlanta); Maine (Mon- 

 mouth); Maryland (Takoma Park); Michigan (George Reserve in 

 Livingston Co., Midland Co., and Warren Woods in Berrien Co.); 

 Minnesota (Alexandria); Nebraska (Lincoln); New Hampshire 

 (Hampton); New York (Cattaraugus Co., Colden, Downsville, Greene 

 Co. at 2,500 ft., Ithaca, McLean Bogs Reserve in Tompkins Co., 

 Poughkeepsie, Stanley, and Waddington); North Carolina (Tryon); 

 Ohio (Akron, Brecksville, and Hocking Co.); Ontario (Blackburn, 

 Cornwall, Ottawa, and Sudbury); Pennsylvania (Carlisle, Overbrook, 

 Pike Co., Pittsburgh, and Roxborough); Quebec (Brome, Covey Hill, 

 Hemmingford, Hull, Joliette, and Laniel) ; Texas (Liberty) ; Vermont 

 (Laurel Lake near Jacksonville); and Virginia (Rosslyn). 



Dates on pin labels are mostly from late spring to early fall. The 

 following are the earliest and latest dates: May 22 at Blackburn, 

 Ont.; May 28 at Ithaca, N. Y.; June 3 in Livingston Co., Mich.; 

 September 4 at Pittsburgh, Pa. ; September 8 at Overbrook, Pa. ; and 

 November 20 at Liberty, Tex., this one a reared specimen. 



Specimens with biological data on the pin labels are: 9, ovipositing 

 into Acer, Ottawa, Ont., June 16; 9, reared from buprestid in decayed 

 Quercus, Liberty, Tex., Nov. 20, 1918; and specimens labeled Castanea 

 dentata, Ulmus americana, and Acer, meaning probably that they 

 were reared from, or taken resting on these kinds of trees. 



This subspecies occurs in the Alleghanian and Carolinian faunas. 

 It parasitizes borers in various hardwoods. 



