MACROLEPIDOPTERA AND THEIR PARASITES 89 
MALACOSOMA DISSTRIA HBN. 
Food plants: Oak, maple, and other deciduous trees. 
Occurrence: Collections from New England, New York, and. New Jersey. 
Usually quite common in oak woodlands, sometimes defoliating large areas. 
Outbreaks occurred in Massachusetts 1912-14. It was estimated at least 1,000 
acres of woodland were defoliated in 1912 in towns of Mashpee and Sandwich, 
Mass. 
Totals received: Collections, 239; larvae, 18,390; years, 15. 
Larvae: May to July. 
Pupae: Early June to early August. 
Adults: Middle of June to early August. 
Parasites 
Collections yielding 
this parasite 
Parasite Years 
specimens | recovered 
Number of | Number of 
collections larvae ~ 
SS 
Diptera: 
Achaetoneura frenchii Will_..----------------------- 311 12 44 8, 712 
Blepharipesg:exul- Towns. 2222 2222222 seee ee et: 224- 11 62 10, 157 
Gartocometesiio- Ald: 220ist See ahs] Ee ee 203 9 28 8, 225 
Compsilura concinnata Meig__-__-___-__------__-__-- 168 13 43 5, 291 
brnestia ampelus. Walk =. sens eee 2 2 2 803 
Madremyia saundersii Will______--.-__-------_--__- 3 1 1 3 
Phorocera claripennis Macq_---__---_-------------_- 2 1 1 345 
Phorocera pachypyga A. and W____-_---_-------_--- 27 5 6 1, 961 
Sturmia scutellata Desv_..-._..-_-_----------------- 5 3 3 220 
Hizorista melawwWialkit ass Sieh eee ese 38 9 22 2, 231 
AG CHINO TY 70: Sphty REEL = FE eee hs oe Be 14 3 8 2, 896 
Tachinidae (unidentified puparia)-__________-______- 162 10 35 8, 375 | 
Zenillia futilis O.S__-________- nae Seana Seiad hater Ok 3 2 3 607 
Zenillia protuberans A. and W______-.------_--_---- 2, 135 15 113 14, 191 
Hymenoptera: 
Ephialtes (Itoplectis) conquisitor Say_-...___-______-- Dy 1 it 345 | 
ECMO US SD 28 es ee set Sees ene ate. ET Te 57 |/ 4 6 761 
HAyposoter clisiocampae Weed____--_----------------- 44 5 8 3, 341 
Labrorychus analis Say__.--_.---------------------- 68 9 23 2, 092 j 
Meteorus datanae Mues____-__---------------------_- 1 1 1 400 
Meteorus hyphantriae Riley__-.-_---_-------------_- 8 2 3 1, 648 
INTETCOTALSISD) (COCOOTIS) he ee ee ee ee 2 1 1 245 | 
Campoplegidea (Viereckiana) vitticollis Nort___-____- 1 1 1 130 
EPICNAPTERA AMERICANA HARR. 
Food plants: Aspen, wild cherry, hickory, and oaks. 
Occurrence: Collections from New England and New Jersey. 
Totals received: Collections, 40; larvae, 47; years, 12. 
Larvae: May to August. 
Pupae: Late June and July, also fall to spring. 
Adults: May and June, sometimes July. 
Generations: One, and sometimes a second brood. 
Parasites 
Collections yielding | 
this parasite 
Parasite Years 
specimens -| recovered 
Number of | Number of 
collections larvae 
Diptera: j | 
Compsilura concinnata Meig.._..__......----__-___- 8 4 4 4 
Broristacmella Walken heee eee oe eee See RE 4 2 2 2 { 
Tachinidae (unidentified puparia)_____.____.______- 6 3 3 3 i 
Hymenoptera: i 
CAD ONLELES TICS ete eee ene cae lana) Te Sh shes re 1 1 1 1 } 
Chromocryptus nebraskensis AShm___._------------- *3 3 3 3 
a ee ee ee ee eee 
