ICHNEUMONIDAE 943 



Poughkeepsie, May (Cush-NYS) ; LI (Cush-US). Parasitic on larvae of 

 stem-boring and stem-gall-making Lepidoptera and Coleoptera such as 

 Gnorimoschema gallaesolidaginis (Rly.), G. gallaeasteriella Kell., the European 

 corn-borer (Pyraiista nubilalis Hueb.), Stagmatophora ceanothiella Cosens, 

 Lophoptiliis eloisella Clem. (Lavernidae), Eibcosma sciidderiana Clem. 

 (Tortricidae), and the weevil Mononychus vulpeculus (Fab.). 

 S. tecumseh Vier. McLean, Aug 26, 1925, SRobinson (Cush-CU). 



Tromatobia Foerster 



(The species of this genus parasitize the egg cocoons of spiders.) 



T. rufopectus (Cress.) (scriptifrons Cress.). Cranberry L., Je-Aug, Htly (Cush- 

 NYS Col. For.); Ithaca, May-Aug (Bdy, Baird-CU) ; McLean Bogs, May 

 (Baird-CU) ; Poughkeepsie, Je, Yg (NYS). A common parasite in the egg 

 cocoons of the spiders of the genus Argiope. It was probably this species that 

 Clarkson (Can. Ent., 1890, p. 122) recorded from NY under the name 

 Ichneumon aranearum Ratz. 



Zaglyptus Foerster 

 (The species of Zaglyptus are parasitic within the egg cocoons of spiders.) 



Z. incompletus (Cress.). Saranac L., Olean, Ithaca, Spring Lake, Jl-Sep (Cush- 

 CU) ; McLean, Aug 30, 1925, SRobinson (Cush-CU). In the U.S. Nat. Mus. 

 there is a series of specimens from Dallas, Texas, reared from the egg cocoon 

 of a spider. 



Delomerista Foerster 



(The species of this genus are parasitic within the cocoons of sawflies.) 



D. novita (Cress.). Cranberry L., Je, Htly (Cush-US). There is no authentic 

 published record of the hosts of this species. Such records as are published 

 should be credited to one or another of the species of Epiurus. 



Perithous Holmgren 

 (The species of Perithous are parasitic in the nests of solitary wasps.) 



P. pleuralis Cress. Ithaca, Je~Aug (Cush-CU, NYS) ; Freeville, Jl (Cush-CU) ; 

 Slaterville to Caroline, Je, MacG&Bdy (Cush-CU) ; Taughannock, May 

 (Cush-CU) ; Albany, Sep (NYS) ; Nyack, Aug, Zab (Cush-US). Specimens 

 in the U.S. Nat. Mus. were reared from the nests of the wasp Pemphredon 

 concolor Say, while others were reared from a sassafras stem containing the 

 nest of a bee or a wasp. 



SUBFAMILY TRYPHONINAE 159 



With a few exceptions the members of the tribes Catoglyptini, Tryphonini, and 

 Cteniscini are parasitic on the larvae of sawflies. The members of the other tribes 

 show a wide diversity in host relations. 



^'^ The classification adopted for this subfamily is that of Thomson as elaborated by Schmiedeknecht 

 in his Opuscula Ichneumonologica, with some slight modifications and the addition of the tribe 

 Paniscini. 



