344 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.58. 



EPfflALTES (ITOPLECTIS) QUADRICINGULATUS (Provancher). 



Pimpla 4-dngulatus Provancher, Nat. Can., vol. 12, 1881, p. 38, female. 



Known to me only from the description and from notes on the type 

 by S. A. Rohwer, tliis species is apparently closely related to the 

 several species that follow it in the key to species. It agrees with 

 leavitti and pacificus in having the apical joint of the hind tarsus 

 with a complete basal annulus and the tegiilae entirely pale, and with 

 the former in the entirely black abdomen; but, according to notes 

 by Mr. Rohwer, it differs from both in having the propodeum entirely 

 polished impunctate and the nervulus slightly postfurcal, Leavitti 

 is from the same region as Provancher's type and will very likely 

 prove to be synonymous. 



EPfflALTES (ITOPLECTIS) OBESUS Cushman. 



Itoplectis obesus Cushman, Proc. U. S. Nat. Mus., vol. 53, 1917, p. 467, female, 

 male. Type, Cat. No. 20779, U.S.N.M. 



Discussion based on type, allotype, paratype, one other female, 

 and two other males, all in the National Museum. 



Very closely allied to Itoplectis alternans Gravenhorst of Europe, but 

 distinguishable by the darker antennae, wing veins and stigma, the 

 brown tipped tegulae, and the fact that only the first two or three 

 hind tarsal joints are white at base. 



This and the following four new species are very closely allied, being 

 separable only by characters which are in themselves more or less 

 variable. With larger series of specimens it is entirely likely that 

 some or all of them will be found to be synonyms. On the characters 

 used, however, they fall into groups of similar geographical range 

 and size and it seems inadvisable to synonymize any of them at 

 present. All except ohesus are based entirely on the female, it being 

 impossible to associate the males with their proper females. Some 

 of the males have the coxae red, while others have them black. 



In the male ohesus differs from hehrensii in having the front and 

 middle coxae mostly pale. 



Malar space much less than half as long as basal width of mandible; 

 clypeus broadly rounded at apex; eyes deeply emarginate within; 

 antennae distinctly stouter toward apex; front shallow, punctate 

 medially; diameter of lateral ocellus much longer than ocell-ocular 

 line; notauli barely indicated; thorax nearly as high as long; propo- 

 deum very short, polished medially and posteriorly, otherwise densely 

 punctate; spiracle round to very broad oval; ovipositor about a 

 third as long as abdomen. 



The type, paratype, and one other female are from Wenatchee, 

 Washington, where they were reared from pupae of the fruit-tree 

 leaf -roller {Archips argyrospila) ; the allotype from Clark County, 



