Gravenhorstia aclerivorus (Roh.) 



Host: Acrobasis comptoniella Hulst. 

 Locality: Bangor, Maine. 

 Adults: August. 

 Number per host: One. 

 Generations: At least two. 

 Hibernation: In host pupa. 



Labrorychus prisrnaticus (Nort.) 



Hosts: Acrobasis comptoniella Hulst, Archips cerasivorana (Fitch'), 

 A. fervidana (Clem.), A. injumatana (Zeil.), Exartema sericoranum 

 Wlshm., Psilocorsis jaginella (Chamb.)t. 



Localities: Many through New England; Hoosick Falls and Pat- 

 chogue, N. Y.; and Toledo, Ohio. 



Adults: July and August. 



Number per host: One. 



Generations: Two. 



Hibernation: In host pupa. 



Labrorychus sp. 



Host: Episimus argutanus (Clem.). 

 Locality: Hampden, Maine. 

 Adults: June. 

 Number per host: One. 

 Generations : Two. 



Labrorychus sp. 



Host: Phlyctaenia tertialis (Guen.). 

 Locality: Calais, Maine. 

 Adults: July. 

 Number per host: One. 

 Generations: One. 

 Hibernation: In host pupa. 



Therion sassacus Vier. 



Host: Depressaria heracliana (L.). 

 Locality: Manchester, Vt. 

 Adults: August. 

 Number per host: One. 

 Generations: Two. 

 Hibernation: In host pupa. 



Subfamily Mesochorinae 



Mesochorus discitergus (Say) 



Host: Phlyctaenia tertialis (Guen.). 



Locality: Bangor, Maine. 



Adults: June. 



Number per host: One. 



Generations: Unknown. 



Hibernation: In cocoon of primary parasite (Meteorust). 



Mesochorus sp. 



Hosts: Macrobotys pertextalis (Led.), Pyrausta futilalis (Led.). 

 £ Localities: Atkinson, N. H.; and Saugus, Mass. 

 Adults: Late in June, and September. 

 Number per host: One. 



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