ICHNEUMON-FLIES, PART 2 1 EPHIALTINAE 235 



(Edmonton and Lethbridge) ; British Columbia (shore of Shuswap 

 Lake at Salmon Arm) ; California (Crescent City and Inverness) ; 

 Maine (Casco); Massachusetts (Amherst); Michigan (Crawford Co., 

 Livingston Co., Mecosta Co., and Midland Co.); New Hampshire 

 (Randolph) ; New York (between Ellis and Slaterville, and Saranac 

 Lake); North Carolina (Mount Pisgah at 4,800 to 5,300 ft.); Ontario 

 (Waubamik); Oregon (Cannon Beach, McMinnville, Seaside, and 

 Takenitch Lake); Quebec (Stoneham); Washington (Ashford, Elbe, 

 and Mount Rainier at 2,900 ft.); Wisconsin (Madison); and Sweden. 



Collecting dates are from early summer to early fall, with a peak 

 in July and August. Unusually early and late collecting dates 

 are: June 5 in Livingston Co., Mich.; June 13 between Ellis and 

 Slaterville, N. Y.; June 17 in Crawford Co., Mich.; June 21 on Mount 

 Pisgah, N. C, and at Stoneham, Que.; September 8 at McMinnville, 

 Oreg.; September 17 in Midland Co., Mich.; September 21 and 

 October 2 at Madison, Wis.; and October 6 at Inverness, Calif. 



This species is transcontinental in the Hudsonian, Canadian, and 

 Transition zones, occurring in dense shaded vegetation in damp 

 habitats. It occurs also in Europe. Adults fly most actively on 

 moist, cloudy days. The biology has been described in some detail 

 by Nielsen (loc. cit.). 



II. QUADRISCULPTA GROUP 



Mesoscutum almost without hairs; metapleurum coarsely rugoso- 

 punctate; front and middle femora of female swollen submedially, 

 more slender apically than basally, usually with an obtuse, compressed 

 median ventral tooth which is continuous distad with a short median 

 ventral carina; discoidella present; fourth tergite with hairs only 

 laterally and in its transverse grooves. 



This group includes the Holarctic A. quadrisculpta (Gravenhorst) , 

 an undescribed species from the Oriental region, and (Polemophthorus) 

 Acrodactyla orientalis Cushman, 1933 (new combination) of Formosa 

 and the Philippines. The species orientalis differs from the other two 

 of its group in lacking the tooth on the front and middle femora of 

 the female. This tooth is lacking occasionally also on the middle 

 femur of small females of A. quadrisculpta. 



4. Acrodactyla quadrisculpta (Gravenhorst), new combination 



Figures 323,h; 332,f 



Ichneumon quadrisculptus Gravenhorst, 1820, Mem. Accad. Sci. Torino, vol. 



24, p. 378; <?. Type: <?, northern Italy (lost during World War II). 

 Zaglyptus kincaidii Ashmead, 1894, Insect life (U. S. Dep. Agr.), vol. 6, p. 260; 



o", $. New synonymy. Type: ?, Olympia, Wash. (Washington). 

 Colpomeria mellithorax Cushman, 1920, Proe. U. S. Nat. Mus., vol. 58, p. 19, 



9 . Type: 9 , no locality data (Washington). 



