96 MISC. PUBLICATION 188, U.S. DEPT. OF AGRICULTURE 
Parasites 
Collections yielding 
this parasite 
Parasite Years 
specimens | recovered 
Number of | Number of 
collections larvae 
Diptera: 
CerOMASt AAS Pee ase ee eS ae 8 1 1 ] 
Hymenoptera: 
Ichneumonidae (dead larva)_.______-_________--__- 1 1 1 1 
AMPHIDASIS COGNATARIA GUEN. 
Food plants: Sweetfern, willow, and various other deciduous growths. 
Occurrence: Collections from Maine, New Hampshire, Massachusetts, Rhode 
Island, Connecticut, New York, New Jersey, and Pennsylvania. Generally 
common. 
Totals received: Collections, 185; larvae, 345; years, 12. 
Larvae: July to October. 
Pupae: Fall to spring and summer. 
Adults: May to July. 
Parasites 
Collections yielding 
; this parasite 
Parasite | Years 
specimens | recovered 
Number of | Number of 
collections larvae 
Diptera: 
Compsilura concinnata Meig______________._________ 2 2 2 16 
ZLenuaanemini Cogs 2.45 Fo ek kei lees 329 11 59 175 
Hymenoptera: 
PA DUNECLESHY CAC RNIN CS ens es Se ee slut 4 9 31 
Apanteles murtfeldtae AShm__________-_____________- pil 1 1 | 1 
A DENLCLESS Dee eee OR eh ee ae eed “2 3 3 | 16 
| 
l 
NACOPHORA QUERNARIA S. AND A. 
Food plant: Oak. 
Occurrence: Collections from Cheshire, Mass.; and Westerly, R.I. 
Totals: received: Collections, 2; larvae, 2; vears, 2. 
Larvae: July to September. 
Pupae: Fall to spring. 
Adults: June and July (collected specimens). 
Parasites 
Collections yielding 
this parasite 
Parasite Years 
specimens | recovered 
Number of |} Number of 
collections larvae 
Diptera: 
Tachinidae (unidentified maggot) 
Zenillia helvina Coq 
He he 
moe 
a 
oe 
POECILOPSIS RACHELAE HULST. 
Food plant: Gray birch and hazelnut. 
Occurrence: Collections from Beverly, Chelmsford, and Melrose, Mass. 
Totals received: Collections, 5; larvae, 6; years, 4. 
Larvae: May and June. 
Pupae: Late June to spring. 
Adults: April. 
