496 U. S. NATIONAL MUSEUM BULLETIN 216 part 3 



and stripe beneath), and often short stripe on upper side of middle 

 tibia, white; extreme apices of front and middle femora and bases of 

 front and middle tibiae often stramineous; wings subhyaline. 



Specimens (20 d^, 469) : From Connecticut (Lyme); District of 

 Columbia (Washington) ; Maine (Brownville) ; Massachusetts (Otter 

 River) ; Michigan (Bath, Lake City, Kent Co., and Midland Co.) ; 

 Minnesota (Florence); New Brunswick (Bathurst); New Hampshire 

 (JafFrey); New York (Avoca, Big Indian Valley in Catskill Mts., 

 Crown Point, Elmira, Ithaca, Labrador Hollow and Labrador Lake in 

 Cortland Co., McLean Reservation in Tompkins Co., Slide Mt. in 

 Ulster Co., Southfields, and Syracuse); North Carolina (Raleigh); 

 Nova Scotia (Kentville); Ohio (Bedford and Brecksville) ; Ontario 

 (Ottawa and Strathroy) ; Pennsylvania (Harrisburg, Hummelstown, 

 Inglenook, and Shiremanstown) ; Quebec (Brome, Hemmingford, and 

 St. Hilare) ; Vermont (Laurel Lake near Jacksonville and Plainfield) ; 

 and Virginia (Dead Run in Fairfax Co., and Great Falls). 



Most specimens were collected in May and June. Unusually early 

 and late records are: April 7 at Dead Run, Fairfax Co., Va.; April 15 

 at Washmgton, D.C.; "April" and May 6 at Ithaca, N.Y.; May 5 at 

 Otter River, Mass., and at Harrisburg, Pa.; July 3 at Laurel Lake, 

 near Jacksonville, N. H.; July 8 at Jaffrey, N. H.; and July 26 at 

 Florence, Minn. 



Reared specimens are: 9, from Saperda discoidea in Carya, Shire- 

 manstown, Pa., June 10, 1915, W. S. Fisher. 9, from cocoon found in 

 tunnel of Saperda Candida in Malus pumila, Crown Point, N.Y., 

 May 18, 1937, A. D. Hess. 9, from 'lAnoplodera proxima in Saiix, 

 Great Falls, Va., May 8, 1917, J. N. I^ull. d", from Populus, 

 Brownville, Maine, May 27, 1952. Other biological notes on pin 

 labels state that a male was collected on a Betula trunk and a female 

 on Carya. 



This subspecies occurs in the Alleghanian fauna. 



3. Echthrus adillae Davis 



Front wing of male 7.8 to 16.0 mm. long, of female 10.5 to 20.0 mm. 

 long; clypeus with its apical 0.3 strongly impressed, its apical margin 

 with a small median tooth; punctures on mesoscutum moderately 

 strong, those on hind half separated by about 1.5 their diameter; 

 second tergite mat, quite smooth. 



E. adillae is transcontinental in the Canadian and Transition zones. 

 It parasitizes borers in large conifers. There are six subspecies, as 

 keyed and described below: 



1. Coxae ferruginous; abdomen ferruginous except for base of first segment; range: 



Sierra Nevada 3d. adillae rubidus, new subspecies 



Coxae black or blackish; abdomen varying from almost entirely ferruginous to 

 entirely black 2 



