﻿116 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lOO 



Pammegischia minnesotae Bradley, Trans. Amer. Ent. Soc, vol, 34, p. 122, 1908. 

 Type: cf, Lake Vermillion, Minn. (Washington). (New synonymy.) 



Wrinkling of frons extending almost to median ocellus; apical part 

 oj abdomen usually dark. 



Female: Forewing about 6.0 mm. long; sculpture of frons approx- 

 imately as in figure 16, k, more extensively wrinkled than in other 

 species, the wrinkles transverse or often tending to limit transverse 

 rectangles as in figure 16, k; third flagellar segment about 4. 2 as 

 long as wide; pronotum strongly rugose, with some punctures; dorsal 

 face of propodeum strongly declivous anteriorly; process on hind 

 coxa about 1. 3 as long as wide; hind femur about 5. as long as wide; 

 abdomen about 2. 4 as long as wide; ovipositor sheath about 1. as 

 long as forewing. 



Coloration variable, usually as follows: Black. Clypeus, mandibles 

 except apex, and palpi brown; legs dark brown, the front legs paler, 

 and the tarsi and ends of tibiae yellowish brown; abdomen ferruginous, 

 the basal part of the first segment black and the apical 0. 35± of 

 abdomen blackish. Frequently the temple and prothorax are dark 

 brown rather than black. One specimen before me is entirely fulvous, 

 and there are numerous mtergrades between this and the darker 

 typical form. 



Male: Similar to the female, but a little more slender; the frons a 

 little less completely and strongly wrinkled ; the third flagellar segment 

 about 6. as long as wide ; the face, cheek, and underside of scape 

 fulvous; and the legs beyond coxae usually fulvous. 



This species is very close to the European A. striatus Jurine, 1807. 



Specimens. — 22 d^, 629, from British Columbia (Restmore 

 in Hunters County and Salmon Ann); Idaho (Stiles); Mani- 

 toba (Aweme); Massachusetts (Petersham and West Summit 

 near North Adams) ; Michigan (Ontonagon County) ; Missouri (St. 

 Louis); Montana (Jefferson Island); New Brunswick (St. 

 Andrews); New York (Cranberry Lake and New York); Ontario 

 (Ottawa); Pennsylvania (Inglenook and RockviUe); Quebec 

 (KnoMdton, Pentecost, and Quebec) ; Rhode Island (Westerly); and 

 Washington (Metaline Falls). Collection dates are mostly in July 

 and range from June 10 to August 9. There are a number of reared 

 lots. Two of them are from Betula lutea, one from Betula nigra, and 

 six more give the host tree as Betula sp. Three of these rearings 

 from Betula spp. give the host insect as Xiphydria sp., and two 

 others record the host insect as Xiphydria mellipes without stating 

 the host tree. 



This species is transcontinental in southern Canada and the northern 

 part of the United States. It parasitizes Xiphydria in Betula spp. 



