DESCRIPTIONS OF ONE NEW GENUS AND EIGHT NEW 

 SPECIES OF ICHNEUMON-FLIES. 



By H. L. Viereck, 



Bureau of Entomology, U. S. Department of Agriculture. 



In the present paper a number of names are proposed that are 

 about to be used in a Bulletin by Dr. L. O. Howard and Mr. F. W. 

 Fiske on the importation into the United States of the parasites of the 

 gipsy and brown-tail moths. This Bulletin is to be published shortly 

 by the U. S. Department of Agriculture, Bureau of Entomology. 



Family BRACONID/E. 



APANTELES (APANTELES) LACTEICOLOR, new species. 



Female. — Length, 2.5 mm.; in structure and sculpture this agrees 

 best with A. contaminatus Haliday as defined by T. A. Marshall; it 

 differs materially, however, in having the propodeum provided with 

 a clearly defined areola flanked by two distinct areas on each side, the 

 boundaries being distinct septa and the interstices smooth and pol- 

 ished; the petiolarea is virtually wanting, the basal area not clearly 

 circumscribed but rugose within; stigma not transparent but paler 

 than the boundary. 



Male. — Sufficiently similar to the female to be easily associated 

 therewith; stigma agreeing well with A. lacteus as described by T. A. 

 Marshall. 



Type.—Msde and female, Cat. No. 13072, U.S.N.M. 



Type-locality. — Europe, Gipsy Moth Laboratory Cage, No. 515, 

 June 24, 1907. 



Paratypes. — Gipsy Moth Laboratory Cage, No. 515 and Nos. 1446, 

 682, 501, 238, 205, 1042, 1248, and 1295, U. S. Department of Agri- 

 culture, Bureau of Entomology. 



In some of the female paratypes the stigma is transparent, but not 

 clearly as in the male nor whitish as in the male. Specimens Nos. 

 1042 and 1248 are labeled "Bred from E. chrysorrhoea." 



Out of 78 females studied, four were noted to have a reduction of 

 the postmedian expansion of the first tergite, making the sides nearly 

 parallel and the segment nearly twice as long as wide at apex or at 

 base; this departure from the apparent normal is even more marked 

 in a small minority of the 54 males studied, the parallel sides of the 

 first tergite in these becoming at least twice as long as wide at base 

 or at apex. 



Proceedings U. S. National Museum, Vol. 40— No. 1832. 



475 



