^ 



Vol. XXIX, pp. 165-172 September 6, 1916 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



ONE NEW GENUS AND FIVE NEW SPECIES OF 

 ICHNEUMON-FLIES. 



BY HENRY L. VIERECK. 



The species considered in this paper are all indigenous to 

 Washington, District of Columbia, and vicinity. 



BRACONIDiE. 



Analostania new genus. 



Related to Aleiodes Wesmael from which it differs especially in the 

 anterior margin of the clypeus being convex instead of concave, in the 

 head having a carina between the eye margin and the vertex, in the 

 flaring occipital carina that is tangent to the hind ocelli, in the 21-jointed 

 antennae with the joints of the flagel from nearly 3 times as long as thick 

 to nearly 6 times as long as thick, in the notauli being represented by 

 two oblique carinae on the anterior third of the mesonotum, inthescutel 

 which is nearly as long as wide and bounded posteriorly and laterally by 

 a distinct carina, in the hind femora being hardly more than half as long 

 as the hind tibiae, in the slender hind tarsi, the first joint of which is at 

 least 8 times as long as thick, in the exceedingly attenuated claws, in the 

 open second discoidal cell with the subdiscoidal vein issuing from the 

 middle of the second discoidal cell, in the lanceolate stigma that is at 

 least 6 times as long as wide across the middle, in the transverse propodeum 

 which is apparently twice as wide as long down the middle, and in the 

 longitudinal median carina of the abdomen being confined to the first 

 segment. On account of the clypeus this genus could be placed in the 

 group polymorphi near Dyscoletes Westwood, because of the venation 

 this genus could be placed in the Spathiinse near Chremylus Haliday. 

 Ignoring these points there is no difficulty encountered in placing this 

 genus near Aleiodes Wesmael. 



Type, Analostania tenuipes new species. 



Analostania tenuipes new species 



Type, Cat. No. 20455, U. S. National Museum. Analostan Island, Lit- 

 tle River, District of Columbia, Oct. 3, 1915; collected by Mr. L. 0. 

 Jackson while sweeping over Pontederia cordata. 



33— Proc. Biol. Soc. Wash., Vol. XXIX, 1916. (165) 



