58 MISC. PUBLICATION 188, U.S. DEPT. OF AGRICULTURE 
Parasites 
| | Collections yielding 
this parasite 
Parasite Years 
specimens | recovered | 
Number of | Number of 
| collections} larvae 
Diptera: | 
Compsiluma concinnata Mieig- 2-2-2222... =~ =e 8 3 3 4 
ELECT ESUOATRCLUP INV Ol Kee ne es Le 22 4 5 13 
Hymenoptera: 
DVIECTODIIET SEIS |) Sen eae tye kk eee Pee Ee 2 1 2 2 
Ophignria(COCOOM) weet es ee 1 1 1 7 
PELOUUSASEIG II OLOTA DS Ayre ie ees ek ee 33 3 | 3 7 
| | 
ACRONYCTA BETULAE RILEY 
Food plant: Birch. 
Occurrence: Collections from Bound Brook, Hillsboro, and Somerville, N.J. 
Totals received: Collections, 4; larvae, 81; years, 3. 
Larvae: May to August. 
Pupae: Late June to August. 
Adults: May, and July to August. 
Generations: At least a partial second generation. 
Parasites 
Collections yielding 
this parasite 
Parasite Years 
specimens | recovered 
Number of | Number of 
collections larvae 
’ Diptera: 
Phorocera near Zenillia lobeliae Coq_---------------- 7 1 Ie 74 
ERECIENO FILLS ete ee ear ee 1 1 1 | 74 
ACRONYCTA DACTYLINA GRT. 
Food plants: Speckled alder, aspen, willow. 
Occurrence: Collections from Maine, New Hampshire, Vermont, Massachusetts, 
New York, and Pennsylvania. 
Totals received: Collections, 82; larvae, 173; years, 7. 
Larvae: Late July to October. 
Pupae: Fall to summer. 
Adults: June and July. 
Parasites 
Collections yielding 
this parasite 
Parasite Years 
specimens | recovered 
Number of | Number of 
collections larvae 
Diptera: 
Compsilura concinnata Meig_-— == - 22 see 1 1 1 10 
ZEN CUT SPARIATIG Wie ss a Se 1 1 1 z 
Hymenoptera: 
OPHIOniIni(COCOON) Baas an a ee ee ee ees 1 ft 1 12 
LOG USESELOMLOL OME SAY eee ae eee eS *62 4 28 101 
ACRONYCTA IMPRESSA WALK. 
Food plants: Speckled alder, apple, aspen, azalea, birch, cherry, sweetfern, 
strawberry, willow. 
Occurrence: Collections from New England, New York, and New Jersey. 
