338 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 58. 



EPHIALTES (EPHIALTES) TENUICOUNIS (Cresson). 



Pimpla tenuicomis Cresson, Proc. Ent. Soc. Phila., vol. 4, 1865, p. 267, female. 



Type, Acad. Nat. Sci. Phila., No. 1414. 

 Meniscus marginatus Provancher, Nat. Can., vol. 14, 1883, p. 15, female. Type, 



Derniere Provancher coll., Public Mus. Quebec. 

 Meniscus ashmeadii Provancher, Addit. Faun. Can. Hym., 1888, p. 430, female. 



Type, Derniere Provancher coll., Public Mus. Quebec. 

 Scambus (Itoplectis) tenuicomis Viereck, Hym. Conn., 1917, p. 322. 

 Pimplidae tenuicomis Cushman, Proc. Ent. Soc. Wash., vol. 20, 1918, p. 9-10. 



The synonmy of this species has been discussed in a recent paper 

 by the writer (see reference above), and in that place as well as under 

 the following discussion of aequalis (Provancher) its very close 

 relationship to the latter species has been outlined. For the charac- 

 ters separating these two species see the s.ynoptic table and discussion 

 under aequalis. 



Distribution. — Canada from Nova Scotia to Vancouver, northern 

 tier of States, and extending south to Colorado and New Jersey. 

 The following States and Provinces represented in National Museum; 

 New Brunswick, Nova Scotia, Vancouver, New Hampshire, Vermont, 

 Massachusetts, New York, New Jersey, Michigan, Illinois, Colorado. 



Hosts. — Gypsy moth {Portlietria disparY; Sesia caudata.^ 



EPHIALTES (EPHIALTES) AEQUALIS (Provancher). 



Pimpla annulipes Authors, not Brull6. 



Pimpla aequalis Provancher, Nat. Can., vol. 12, 1880, p. 36, female. Type, 



Derniere Provancher coll.. Public Mus. Quebec. 

 Pimpla conquisitor, var. rufuscula Davis, Trans. Amer. Ent. Soc, vol. 24, 1897, p. 



368, female. Type, Acad. Nat. Sci. Phila. 

 Scambus (Itoplectis) marginatus Viereck, Hym. Conn., 1917, p. 322. 

 Pimplidea aequalis Cushman, Proc. Ent. Soc. Wash., vol. 20, 1918, pp. 9-10. 



In a recent paper (see reference above) the writer has discussed 

 the snyonymy and inmiediate relationship of this species and reca- 

 pitulation here is unnecessary. This discussion and the following 

 description is based on the types of both Provancher and Davis, 

 specimens compared with both types, and a very large series of 

 both sexes in the United States National Museum, 



Malar space equal to basal width of mandible in female, slightly 

 shorter in male ; face slightly wider than vertex ; antennae nearly as 

 longasbody, very slender and slightly attenuate toward apex, the lower 

 margins of their foramma far below middle of eye; frons rather 

 deeply concave, especially m large specimens, polished with few 

 weak rugae in large specimens; ocelli subequal in diameter to length 

 of ocell-ocular line, which is considerably shorter than postocellar 

 line; propodeum with lateral ridges weak, strongly punctate later- 



1 Ins. Life, vol. 5, p. 339. » Ins. N. J., 1909, p. 62t>. 



