Dibrachys cavus (Wlk.) § 



Hosts: Archips cerasivorana (Fitch), A. Jervidana (Clem.), Fumaria 

 casta Pall. 



Localities : Burnham and Ellsworth, Maine; Canaan, N. H. ; Brookline 

 and Winchester, Mass.; and Moreau, N. Y. 



Adults: July-August. 



Number per host: Gregarious. 



Generations: Two or more. 



Hibernation: In host pupa. 



Sometimes a primary parasite, though more often a hyperparasite. 



Dibrachys sp. 



Host : Coleophora laricella Hbn. 

 Locality: Winthrop, Maine. 

 Adults: June. 

 Number per host : One. 

 Generations: Unknown. 



Psychophagus omnivorus (Wlk.) § 



Host: Cnidocampa flavescens Wlk. 

 Locality: Boston, Mass. 

 Adults: July. 



Number per host: Gregarious. 

 Generations: Two or more. 

 Hibernation: In host pupa. 



This species is often a hyperparasite. (U. S. Dept. Agr. Misc. 

 Pub. 188, 153. 1934.) 



Habrocytus sp. 



Host: Ezoteleia pinifoliella (Chamb.). 

 Locality: Boylston, Mass. 

 Adults: June. 

 Number per host: One. 

 Generations: At least two. 



Habrocytus thyridopterigis How. 



Hosts: Coleophora laricella Hbn., C. limosipennella Dup., Epinotia 

 nanana (Treits.), Recur varia apicitripunctella (Clem.), Rhyacionia 

 buoliana (Schiff.), R. rigidana Fern., Thyridopteryx ephemeraejormis 

 (Haw.)^ m 



Localities: Many in Maine, New Hampshire, Vermont, Massachu- 

 setts, Connecticut, New York, and Delaware. 



Adults: Late in June, July, August, and October. 



Number per host: One. 



Generations: At least two. 



Hibernation: As immature stage on host in larval case or cell. 



Hypopteromalus sp. § 



Host: Coleophora limosipennella Dup. 



Locality: Bradford, Vt. 



Adults: July. 



Number per host : One. 



Generations : Unknown. 



A hyperparasite on the primary parasite, Apanteles sp. 



89 



