80 U. S. NATIONAL MUSEUM BULLETIN 216 pabt s 



6. Gaiubrus canadensis (Provancher) 



Figure 327,m 



Front wing 3.8 to 7.4 mm. long; clypeus moderately large, moder- 

 ately convex, but in the subspecies hurkei the clypeus a little smaller 

 and more strongly convex; apical margin of clypeus without a distinct 

 median apical tooth, but impressed on each side so that it may seem 

 to have a broad, weak median tooth; temple rather strongly convex, 

 but in the subspecies hurkei the temple rather wealdy convex; tyloids 

 linear, sharp, extending for about 5 segments; mesoscutum mat, or 

 partly subpolished; mesopleurum polished with some rather coarse 

 punctures but mostly with reticulate wi'inkling that obscures or re- 

 places the punctures; second tergite of male weakly mat, with rather 

 large, shallow punctures that are separated by about 0.6 their diam- 

 eter; second tergite of female mat, its apical 0.35 ± usually less 

 strongly mat, with moderate sized, rather shallow punctures that are 

 separated by about 0.5 to 3.0 their diameter; ovipositor sheath about 

 0.44 as long as front wing; ovipositor moderately compressed, its tip as 

 in figure 327,m. 



This species is transcontinental in the Transition and Canadian 

 zones. It occurs in the undergrowth of deciduous woods and nor- 

 mally parasitizes Malacosoma spp. There are three subspecies, as 

 keyed and described below: 



1. Apical 0.1 to 0.25 of hind femur fuscous; flagellum of female with a short* 



median white stripe above; seventh tergite of female nearly always with a 

 median white spot; range: Atlantic Ocean to Rocky Mountains in Canadian 

 and Transition zones, plus Alberta, British Columbia, and parts of Washing- 

 ton and Oregon 6a. canadensis canadensis (Provancher) 



Apical part of hind femur not distinctly infuscate; flagellum of female usually 

 without a median white stripe; seventh tergite of female usually without 

 a white spot 2 



2. Temple rather strongly convex; first trochanter of middle and hind legs of male 



fuscous; range: Rocky Mountain area, from Washington to Arizona and 



New Mexico 6b. canadensis exareolatus (Viereck) 



Temple rather weakly convex; first trochanter of middle and hind leg of male 

 ferruginous or mostly so; range: California. 



6c. canadensis burkei (Viereck) 



6a. Gambrus canadensis canadensis (Provancher) 



Nematopodlus Canadensis Provancher, 1875, Naturaliste Canadian, vol. 7, p. 268; 

 cf . Lectotype: cf, Que. (Quebec). 



Clypeus rather wide; temple rather strongly convex; mesoscutum 

 mat. 



Male: Black. Alaxillary palpus white, its first segment black 

 and its last two more or less infuscate; labial palpus fuscous; tegula 

 black ; front and middle legs beyond first trochanters ferruginous ; hind 



