ICHNEUMON-FLIES, PART 2\ EPHIALTINAE 151 



Black. Clypeus fulvoferruginous; mandible sometimes stained 

 with ferruginous; maxillary palpus white, its basal segment brown; 

 labial palpus brown; tegula white; extreme hind corner of pronotum 

 black to brownish fulvous; coxae fulvous; first trochanters pale ful- 

 vous; second trochanters whitish and pale fulvous; front and middle 

 femora fulvous, yellowish at apex in front; front tibia fulvous, its 

 basal 0.15 pale stramineous, beyond which is a faint fuscous band, 

 then a paler area, then fulvous to the apex; middle tibia repeating 

 colors of front tibia but a little darker, its apical part light brown; 

 front tarsus stramineous, its apex brown; middle tarsus brown; hind 

 femur fulvous to brown, with always at least a subapical infusca- 

 tion, its extreme apex stramineous; hind tibia with its basal 0.15 

 whitish, beyond which is a dark brown band, then medium brown 

 with its apical 0.33 dark brown; hind tarsus fuscous, the base of its 

 basitarsus light brown. 



The type of Ephialtes pygmaeus Walsh has been destroyed, so the 

 application of the name must be determined from the description. 

 This description seems applicable to either a large specimen of the 

 species above or to a small specimen of D. vitticrus, but more likely 

 to the present species because Walsh does not mention the white 

 stripe on the upper side of the front and middle tibiae, which is 

 characteristic of D. vitticrus. 



The genitalia and subgenital plate of this species have some fea- 

 tures in common with those of D. sericeus, indicating a possible 

 relationship between the two. 



Specimens (3d 1 , 379): From British Columbia (Nanaimo Biolog- 

 ical Station and Wellington) ; California (Chester) ; Maryland (Bowie) ; 

 Michigan (Brevort, Dickinson Co., and Gull Lake Biological Station 

 in Kalamazoo Co.) ; New Hampshire (Pinkham Notch) ; New York 

 (Allegheny Park, Ithaca, and Rock City in Cattaraugus Co.) ; North 

 Carolina (Forney Creek in Great Smoky Mountains National Park 

 and Mount Pisgah at 5,000 to 5,749 ft.) ; Ontario (Constance Bay) ; 

 Oregon ("Boyer," and Diamond Lake in Douglas Co.) ; Pennsylvania 

 (Furnace) ; and West Virginia (Cheat Mt. at 2,000 ft. in Randolph Co.). 



Collecting records for the three males are June 8 at Brevort, Mich. ; 

 June 24 at Bowie, Md.; and August 1 in Allegheny Park, N. Y. 

 Records for females are from June 9 to August 1, except for six rec- 

 ords as follows: May 22 at Ithaca, N. Y.; May 26 at Wellington, 

 B. C; May 30 at Constance Bay, Out.; August 5 at Gull Lake Bio- 

 logical Station, Kalamazoo Co., Mich.; August 22 in Dickinson Co., 

 Mich.; and September 5 at 5,000 to 5,749 ft. on Mount Pisgah, N. C. 



A female was taken from borings of Plectrum spinicauda at 

 Wellington, B. C, July 23, 1947, by Richard Guppy. 



This species is transcontinental in the Transition zone. 



