Rhyacionia rigidana (Fern.) 



Food plant: Ked pine. 



Occurrence: Croton Falls, N. Y. 



Totals received: Three collections of 156 larvae and pupae. 



Larvae: May to July. 



Pupae: July to spring. 



Adults: April and May. 



Parasites : 



Hymenoptera: 



Calliephialtes comstockii (Cress.) . 

 Eurytoma sp 



Glypta varipes Cress 



Habrocytus thyridopterigis How_. 

 Perilampus fuluicornis Ashm 







Collections 



Host larvae 



Parasite 



Years re- 



yielding 



and pupae 



pecxmens 



covered 



parasite 



collected 



2 





1 



25 



2 





1 



25 



2 





2 



115 



1 





1 



25 



4 





2 



115 



Rhyacionia frustrana (Comst.) Nantucket pine moth 



Food plants: Pitch, pine, short leaf pine. 



Occurrence: Marthas Vineyard, Nantucket, Mass., and South 

 Dennis, N. J. 



Totals received: Collections, 9; larvae and pupae, 683; years, 5. 



Larvae: New England — May and June. 



Pupae : New England — July to spring. 



Adults: New England — May and June. New Jersey — mid-April 

 to'May, and July. 



Generations: New England, one; vicinity of New Jersey, two. 



Parasites: 



Diptera: 



Lixophaga mediocris Aid 



Hymenoptera: 



Agathis pini Mues 



Bracon gemmaecola (Cush.) 



Calliephialtes comstockii (Cress.) 



Campoplex frustranae Cush 



Copidosoma geniculatum (Dalm.) (?) 



Cremastus epagoges Cush 



Eupelmus cyaniceps amicus Grit 



Eurytoma tylodermatis Ashm 



Glypta varipes Cress 



Goniozus n. sp 



Haltichella rhyacioniae Gah 



Hyssopus thymus Grit 



Itoplectis conquisitor (Say) 



Micro gaster epagoges Gah 



Scambus sp 



Tetrastichus marylandensis (Grit.) 



T. varicornis (Grit.) 







Collections Host larvae^ 



Parasite 



Years 



yielding 



and pupae 

 collected 



specimens 



recovered 



parasite 



1 



1 



1 



50 



2 



1 



2 



286 



23 



3 



5 



436 



12 



2 



4 



586 



17 



2 



5 



606 



4 



1 



1 



158 



1 



1 



1 



50 



57 



2 



4 



406 



11 



1 



3 



306 



54 



2 



5 



606 



1 



1 



1 



128 



48 



3 



6 



459 



3 



1 



1 



158 



3 



1 



1 



50 



2 



1 



1 



128 



1 



1 



1 



158 



4 



1 



1 



158 



3 



1 



1 



158 



Petrova comstockiana (Fern.) pitch twig moth 



Food plants: Pitch, red, and Scotch pines. 



Occurrence: Massachusetts. 



Totals received: Collections, 5; larvae and pupae, 60; years, 3. 



Larvae: July to spring. 



Pupae: May and June. 



Adults: June. 



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