ICHNEUMON-FLIES, PART 2 1 ACAENITINAE 573 



Four males were reared from Bellamira scalaris in Betula nigra, 

 Inglenook, Pa., 1922, Champlain and Knull. 



This subspecies is in the Alleghanian fauna. Adults occur 

 mostly in July. 



2b. Spilopteron formosum australe, new subspecies 



Figure 328,e 



The key states the differences between this subspecies and the one 

 preceding. 



Type: 9, Clinton, N. C, May 24, 1951, H. and M. Townes (Wash- 

 ington, USNM 63742). 



Paratypes: 29, Rock Creek Park, Washington, D. C, July 12, 

 1906, C. E. Burden (Washington). 29, reared from decayed log of 

 Liquidambar, Clyo, Ga., May 3, 1922, R. A. St. George (Washington). 

 9, Cabin John, Md., June 26, 1916 (Townes). 29, Plummers Island, 

 Md., June 6, 1912, H. S. Barber (Washington). d\ North Carolina, 

 T. Pergande (Washington). 



This subspecies occurs in the Carolinian fauna. 



3. Spilopteron vicinum (Cresson), new combination 



Front wing 10.5 to 14 mm. long; head about 0.90 to 0.95 as wide 

 across midlength of temple as across eyes ; punctures on metapleurum 

 moderately coarse, separated by about 1.25 their diameter; scutellum 

 with lateral carina only at its base; ovipositor sheath about 0.93 as 

 long as front wing. 



There is an eastern and a western subspecies, separable on color 

 as described below: 



1. Mesopleurum black, its subtegular ridge yellow; range: Canadian and Transi- 

 tion zones of eastern North America . . 3a. vicinum vicinum (Cresson) 

 Mesopleurum mostly fulvous or light brown, its subtegular ridge yellow and 

 restricted areas blackish; range: Minnesota to British Columbia; also 

 Nova Scotia 3b. vicinum melanderi, new subspecies 



3a. Spilopteron vicinum vicinum (Cresson) 



Figure 328,f 



Aroles vicinum Cresson, 1869, Trans. Amer. Ent. Soc, vol. 2, p. 260; d* . Type: 



d\ Massachusetts (Philadelphia). 

 Arotes venustus Cresson, 1869, Trans. Amer. Ent. Soc, vol. 2, p. 260; cf , 9 • 



Lectotype: 9, Massachusetts (Philadelphia). 

 Arotes superbus Provancher, 1874, Naturaliste Canadien, vol. 6, p. 81; d\ 9- 



Lectotype: 9 , Quebec (Quebec). 



Head about 0.91 as wide across midlength of temples as across eyes. 



Male: Head yellow, the top of head, a finger extending downward 

 on frons toward each antennal socket, most of occiput, and a narrow 

 hind margin on eye blackish brown, aD area on cheek medium brown; 



