— 12 — 



Note. Legs, with exception of coxae, bright yellow. 

 Mandibles totally black. The same species I bred at Poltava 

 from the puparia of the Tachinid Compsilura concinnata. 

 Probably a variety of D. boucheanus. 



Dibrachoides, gen. nov. 



Allied to Dibrachys Förster. Head large, thick; vertex wide; 

 occiput excavated, immargined, as in Dibrachys Förster. Cheeks 

 strongly compressed, sharp. Left mandible 3-dentate, right 4-dentate. 

 Antennae with 2 ring joint; pedicel more than one and a half times 

 as long as the first funicle joints, antennae somewhat widened to 

 the tips. Thorax ( $ ) shorter than the abdomen; niesonotum shorter than 

 the scutellum, vice versa in the case of Dibrachys Förster. The 

 postmarginal vein of the anterior wing a little longer ($) or distinctly 

 shorter (cT) than the stigmal one; the stigmal vein is about one half 

 as long as the marginal. The sides of the propodeum covered with 

 dense white hairs. Abdomen conical ovate ( $ ) or ovate (cJ'). 



Type of the genus: Pteromalus dynastes Förster, 1841, p. 24, 

 n. 183. 



D, dynastes Förster. 



? Pteromalus communis N e e s , Hymen. lehn, affin. Monogr., 

 II, 1834, p. 103, n. 17. 



This species was reared as a parasite of the larvae of the alfalfa- 

 weevil {Phytonomus posticus Gyll.) by the U. S. Gypsy Moth and 

 Alfalfa-weevil Laboratory, Portici, Italy, and imported into U. S. America 

 during years 1911 — 1912. I had the opportunity to do comparison 

 between several specimens presented to me by Mr. H. S. Smith and 

 the Förster's type in Vienna. Italian specimens are colored somewhat 

 lighter than the type. Yet there are among them some specimens almost 

 of the same coloration as the Forste r's one. At Poltava I collected 

 two females colored darker than the Italian specimens. Thus the species 

 in the question must be rather variable in color, as it is the case with 

 the allied Dibrachys boucheanus Ratz. $ & J^ of D. dynastes Förster 

 are figured by Prof. F. M. Webster in his Report on the alfalfa- 

 weevil ^). 



Gen. Eupteromalus, gen. nov. 



This genus replaces Ash mead's genus Trichomalus (nee Tricho- 

 malus Thomson!). The sides of the propodeum and of the second 

 abdominal segment as well as the coxae are very moderately pubescent, 

 like in the case of others Pteromalidae. Type of genus is Pter. nidu- 



1) Preliminary Report on the Alfalfa Weevil. U. S. Dep. Agric. Bur. 

 Entom., Bull. 112. Washington 1912, fig. 19-20, p. 37. 



Revue Russe d'Entom. XUI. 1913. № 1. 



