No. 22.] HYMENOPTERA OF CONNECTICUT. 223 



5. Postpetiole mostly pale; propodeum and scapulae stramineous 



petiolariferus 

 Postpetiole black; propodeum and scapulae blackish . . . .pretiosus 



6. Greatest diameter of lateral ocelli distinctly shorter than 



ocellocular line 7 



Greatest diameter of lateral ocelli at least as long as ocellocu- 

 lar line hyphantriae 



7. Postpetiole distinctly, closely striate 8 



Postpetiole indistinctly striate, some of the striae separated 



by broad polished spaces vulgaris 



8. Body more or less black or blackish q 



Body almost entirely reddish stramineous exareolatus 



9. Petiole stramineous or brownish stramineous versicolor 



Petiole black dimidiatus 



M. indagator (Riley). 



Length 4.5 mm. ; propodeum black, as is the first abdorftinal 

 segment; tarsi, especially at their tips, slightly dusky; exserted 

 portion of ovipositor about as long as the abdomen. 



A parasite bred from Acrobasis on barberry. New Haven, 

 27 June, 1913 (L. B. Ripley). 



°M. archipsidis Viereck. 

 Parasitic on Archips argyrospila. 

 *M. communis (Cresson). 



Tibiae and tarsi pale yellowish stramineous; propodeum with 

 no basal area, but with a median longitudinal ridge on the basal 

 half ; exserted portion of ovipositor about half the length of the 

 abdomen. 



May be found throughout the state, where it has been taken 

 in June, July and October (H. W. W., H. L, V.). Parasitizes the 

 white-marked tussock moth (Hemerocampa leucostigma) , 

 Pyrausta penitalis, Lithocolletis rohiniella and Datana integer- 

 rima. 



*M. petiolariferus Viereck (new species). 

 Male: propodeum with a median longitudinal carina on the 

 basal half and a petiolarea on the apical half. 



Type locality: Branford, 28 July, 1905 (H. L. V.). 

 *M. pretiosus Viereck (new species). 

 In color like communis except vertex and scapulae, which 

 are stained with blackish ; propodeum and petiole blackish ; an- 

 tennae brown. 



