136 U. S. NATIONAL MUSEUM BULLETIN 216 



early and late records as follows : April 29 at Meadows of Dan, Patrick 

 Co., Va.; May 4 at Camden, N. J.; May 10 at Ottawa, Ont.; July 10 

 and 20 at Ottawa, Ont.; July 29 at Ithaca, N. Y.; and "October" 

 at Toronto. Unusually early and late records of females are: April 29 

 at Meadows of Dan, Patrick Co., Va.; May 10 and 15 at Ottawa, 

 Ont.; May 15 at Spring Brook, Pa.; October 1 at Ithaca, N. Y.; 

 October 21 at Clark's Valley, Pa.; and October 22 at Lewiston, 

 Idaho and at Yankton, S. Dak. 



Rearing records are: 5c\ 89, from Saperda calcarata, Indian Head, 

 Sa.sk., May 31 to June 8, 1937, K. E. Stewart. 9, ovipositing in gall 

 of Saperda concolor, Clark's Valley, Pa., Oct. 21, 1928, J. N. Knull. 

 9, from Saperda concolor, Westboro, Pa., Apr. 5, 1921, F. C. Craig- 

 head. cT, from Saperda moesta in Populus tremuloides, Riggins, 

 Idaho, Mar. 10, 1915, L. O. Swartz. 



This subspecies in its typical form is in the Canadian and Transi- 

 tion zones of eastern North America, but in Canada and northern 

 United States specimens identifiable as this subspecies occur west- 

 ward to Idaho and British Columbia, into the range of the subspecies 

 sparsus. Males occur mostly from early spring to mid-summer, but 

 females persist in numbers to late in the fall. It has been reared 

 from Saperda in Salix and Populus. 



8c. Dolichomitus messor messor (Gravenhor9t), new combination 



Ephialles messor Gravenhorst, 1829, Ichneumonologia europaea, vol. 3, p. 232; 

 9. T}'pe: 9, Volhynia, Russia (Wroclaw). 



Male: Face with moderate-sized, dense punctures and dense hairs; 

 front trochanters and femur as described for the subspecies D. messor 

 perlongus; outer side of middle coxa with a faint median swelling; 

 punctures on outer side of middle coxa a little denser than elsewhere 

 on the coxa. 



Black. Clypeus mostly ferruginous; spot on scape in front stramin- 

 eous; palpi pale ferruginous, brown basally; tegula pale yellow; 

 extreme hind corner of pronotum tinged with fulvous; mesosternum 

 and lower part of mesopleurum sometimes light brown; legs fulvous, 

 the under side of trochanters and of femur, the front side of tibia, 

 and all of tarsus pale yellowish; middle leg fulvous, the femur in front 

 at apex, tibia except behind, and tarsus pale yellowish; hind coxa, 

 trochanters, and femur fulvous, the apex of femur sometimes with a 

 faint infuscation; hind tibia medium brown, pale brown on basal 0.2 

 and on basal 0.6 of lower edge; hind tarsus medium brown, the base of 

 each segment light brown; stigma light brown, its edges dark brown. 



Female: Approximately like the female of D. messor perlongus 

 except that the hairs on the hind femur are a little denser and that the 

 stigma is light brown bordered with darker. 



