ICHNEUMON-FLIES, PART 2\ EPHIALTINAE 293 



Adults occur from early spring to late fall. A wide variety of exposed 

 or weakly protected lepidopterous pupae or prepupae serve as hosts, 

 and it is sometimes a secondary parasite. 



3. Itoplectis viduata (Gravenhorst) 



Figure 325,k 



Pimpla viduata Gravenhorst, 1829, Ichneumonologia europaea, vol. 3, p. 214; <?. 



Types: o 71 o", "circe Hanoveram, Trajectum ad Moenum et in Austria" 



(Wroclaw). 

 Pimpla atrocoxalis Cresson, 1870, Trans. Amer. Ent. Soc, vol. 3, p. 145; ?. Type: 



9, Hudson Bay Territory (Philadelphia). 



Front wing 7.5 to 11.5 mm. long; temple rather flat, about 0.62 as 

 long as eye; face moderately wide; flagellum of almost uniform thick- 

 ness throughout, the segment sixth from the apex about 1.45 as long 

 as wide; punctures on mesoscutum and mesopleurum rather coarse 

 and strong; notaulus absent; propodeum short, its median longitudinal 

 carinae extending about 0.4 its length; propodeal spiracle long oval 

 (short oval in the other Nearctic species) ; front tarsal claws of female 

 with a big, rather narrow, postmedian tooth; third tergite about 0.58 

 as long as wide in male, about 0.47 as long as wide in female; tergites 

 2-7 with rather strong depressions and elevations; ovipositor sheath 

 about 2.4 as long as first tergite. 



Black. Palpi fuscous; flagellum blackish brown, reddish brown 

 beneath, the basal half of its first segment entirely black; tegula 

 stramineous with its outer apical part fuscous, to entirely fuscous; 

 wings faintly infuscate; legs beyond trochanters fulvoferruginous, the 

 hind tarsus a little infuscate, especially toward the apex and on the 

 apex of the basal segments; second trochanters blackish, ferruginous 

 apically. 



It seems possible that Palaearctic and Nearctic specimens could be 

 distinguished as subspecies on minor differences in color. We do not 

 have enough Palaearctic material, however, to come to a decision on 

 this. The above color description is drawn from only Nearctic 

 specimens. 



Specimens (49 cf, 729): From Alberta (Lethbridge, Sylvan Lake, 

 and Waterton); Arizona (Parker Creek in the Sierra Ancha and San 

 Francisco Peaks in Cononino Co.); British Columbia (Chilli wack, 

 Delta, Hazelton, Kamloops, Mount Revelstoke National Park, Pitt 

 River, Revelstoke, and Vernon) ; California (Alameda Co., Apple 

 Valley in San Bernardino Co., Berkeley, Buck's Lake in Plumas Co., 

 Cajon Pass, Camp Richardson, Davis, Giant Forest, Hallelujah Junc- 

 tion in Lassen Co., Indio, Lake Tahoe, Lone Pine, Palm City, San 

 Jacinto Mts., Santa Clara, Tahquitz Valley on Mount San Jacinto in 

 Riverside Co., Tamarack Lake at 7,700 ft. in El Dorado Co., Tracy, 



