NO. 2340. TRIBE EPHIALTINI OF THE ICHNEUMONINAE—CUSHMAN. 337 



longer than diameter of lateral ocellus; antennae nearly as long as 

 body, not attenuate at apex; notauli not at all impressed; propodeum 

 very weakly ridged laterally, densely punctate dorsally and laterally, 

 polished behind, spiracle practically round; first tergite with posterior 

 depression occupying much more than half the length of the tergite, 

 not roundly prominent on each side of middle at summit; ovipositor 

 sheath about one-third as long as abdomen. 



EPmALTES (EPfflALTES) EXAREOLATA (Ashmead). 



Itopledis exareolata Ashmead, Psyche, vol. 9, 1901, p. 147, female. Type, Cat. 

 No. 5326, U.S.N.M. 



This species is represented only by the unique type female. In 

 addition to the characters given in the key it differs from its nearest 

 relative, puncipes (Cresson), in having the clypeus distinctly emargi- 

 nate; first tergite with anterior declivity occupying but little more 

 than half of the length of the tergite, and roundly elevated on each 

 side of the middle at the summit; ovipositor sheath about half as 

 long as abdomen. 



EPHIALTES (EPHIALTES) AQUILONIA (Cresson). 



Pimpla aquilonia Cresson, Trans. Amer. Ent. Soc, vol. 3, 1870, p. 145, male. 

 Type, Acad. Nat. Sci. Phila., No. 1421. 



This species, described only in the male, is evidently most closely 

 allied to aequalis (Provancher) of the North American species, but 

 differs from that species by the white spotted scutellum and more 

 finely sculptured abdomen. The latter character is, however, very 

 variable in aequalis. These two characters ally it much more closely 

 to turionellae (Linnaeus) of Europe. 



The unique type is apparentlv the only specimen known. It is 

 from Maine. The record published by Davidson ^ of the rearing 

 of this species from spider egg cocoons is of doubtful accuracy. He 

 undoubtedly had a species of Tromatohia. 



EPHIALTES (EPHIALTES) TURIONELLAE (Linnaeus). 



Ichneumon turionellae Linnaeus, Syst. Nat., ed. 10, vol. 1, 1758, p. 564, male. 

 Pimpla turionellae Gravenhorst, Nov. Act. Acad. Nat. Curios., vol. 9, 1818, 

 p. 291. 



Roman ^ records this species from New Jersey, Wisconsin, Illinois, 

 South Carolina, and Texas. The only closely allied North American 

 species that has any such distribution is aequalis (Provancher), and 

 it seems most likely that this is what Roman had, especially since his 

 observations on the structure of his specimens apply fairly well to 

 this species. 



» Ent. News, vol. 7, p. 319. « Ent. Tiiskr., vol. 31, 1910, p. 187- 



181404— 21— Proc.N.M.vol.58 22 ' 



