Number per host: Probably one. 



Generations: One. 



Hibernation: On host. 



Hyperparasite of Bucculatriplex bucculatricis (Ashm.). 



Pleurotropis sexdentata (Grlt.)§ 



Host: Acrobasis comptoniella Hulst. 



Locality: North Andover, Mass. 



Adults: July. 



Number per host: One. 



Generations: Unknown. 



A hyperparasite, probably of Meteorus indagator Riley. 



Pleurotropis tarsalis (Ashm.)§ 



Host: Pterophorus periscelidactylus (Fitch). 

 Locality: Melrose, Mass. 

 Adults: July. 

 Number per host: One. 



Generations: One or two. (Muesebeck and Dohanian, 1927. 

 U. S. Dept. Agr. Dept. Bui. 1487, 31.) 

 A hyperparasite of Apanteles sp. 



FAMILY ELASMIDAE 



Elasmus atratus How. § 



Hosts: Acrobasis comptoniella Hulst, Pterophorus periscelidactylus 

 (Fitch), Pyrausta jutilalis (Led.). 



Localities: Atkinson, N. H.; and Melrose and North Andover, 

 Mass. 



Adults: July, September. 



Number per host: Gregarious. 



Generations: Two or more. 



Hibernation: As pupae within host cocoon. 



Sometimes it acts as a hyperparasite of Apanteles sp. 



FAMILY ENCYRTIDAE 

 Subfamily Encyrtinae 



Copidosoma gelechiae gelechiae How. 



Host: Gnorimoschema gallaesolidaginis (Riley). 

 Locality: Melrose, Mass. 

 Adults: August-September. 

 Number per host: Gregarious. 

 Generations: One. 

 Hibernation: In egg of host. 



Copidosoma geniculatum (Dalm.) (?) 



Host: Rhyacionia frustrana (Comst.). 

 Locality: Nantucket, Mass. 

 Adults: Late in May. 

 Number per host: Gregarious. 

 Generations: Probably one. 

 Hibernation: In host larva. 



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