296 U. S. NATIONAL MUSEUM BULLETIN 216 



Forest at Hepworth, and Toronto): Oregon (Ashland, Colestin, and 

 Corvallis); Quebec (Quebec City); and Washington (Pullman). 



The majority of the specimens at hand were laboratory reared, so 

 there is little information on the seasonal distribution of adults in 

 nature. The earliest and latest dates for collected adults are April 15 

 at San Francisco, Calif., and July 25 at Snow Bowl, San Francisco 

 Peaks, Coconino Co., Ariz. 



Rearing records are as follows: 2 rearings from Barbara colfaxiana 

 siskiyouana, 8 from B. colfaxiana taxifoliella, 2 from B. mappana, 1 

 from Barbara sp., 2 from Choristoneura fumiferana, 1 from Dioryctria 

 cambiicola, 19 from Rhyacionia buoliana, 1 from a host on Pseudo- 

 tsuga taxifolia, and 1 from a host on Fraxinus oregona. 



This species is transcontinental in the Canadian zone. The usual 

 hosts are Lepidoptera feeding in the cones or growing tips of Coniferae. 



5. Itoplectis behrensii (Cresson) 



Figure 326,a 



Pimpla Behrensii Cresson, 1878, Proc. Acad. Nat. Sci. Philadelphia, vol. 1878, 

 p. 377; d% 9 . Lectotype: ?, California (Philadelphia.) 



Front wing 6.5 to 8.0 mm. long; temple moderately convex, about 

 0.58 as long as eye; face moderately wide; flagellum very weakly en- 

 larged apically, the sixth segment from the apex about 1.5 as long as 

 wide; punctures on mesoscutum and on mesopleurum rather coarse and 

 strong; notaulus present but weak; propodeum short, its median longi- 

 tudinal carinae extending about 0.4 its length; front tarsal claws of 

 female with a small, acute, median tooth; third tergite about 0.58 

 as long as wide; tergites 2-7 with moderately strong depressions 

 and elevations; ovipositor sheath about 1.55 as long as first tergite. 



Black. Palpi of male white; maxillary palpus of female whitish; 

 labial palpus of female brownish ; tegula and rather large hind corner 

 of pronotum white; coxae black, their extreme apex whitish or fulvous; 

 trochanters of front leg white or whitish, the first trochanter with 

 a brown stripe above; front femur fulvous with a whitish stripe above; 

 front tibia whitish above, the rest mostly fulvous; front tarsus white 

 to stramineous; middle trochanters fulvous, those of male white in 

 front; middle femur fulvous, the apex whitish in front; middle tibia 

 pale brown, with a subbasal whitish band which is elongate above; 

 middle tarsus whitish stramineous, the segments brownish apically; 

 hind trochanters and femur fulvoferruginous, the femur infuscate at 

 apex; hind tibia fuscous, with a premedian white band, the fuscous of 

 its apical half more or less replaced by reddish brown, hind tarsus 

 fuscous, the segments white basally except that the fourth segment is 

 entirely fuscous; tergites ferruginous laterally, each with a narrow 

 apical margin of stramineous which does not reach the lateral margin. 



