Parasites: 



Collections Host 



Parasite Years yielding larvae 



Dipteral specimens recovered parasite collected 



Achaetoneura spectabilis (Aid.) 10 3 3 141 



Zenillia blanda (O. S.) 15 1 1 100 



Hymenoptera: 



Syzeuctus elegans (Cress.) 4 1 2 35 



Triclistus fulvipes (Cress.) 12 1 1 100 



Zaleptopygus retiniae (Cress.) 6 3 4 144 



Tetralopha n. sp., near asperatella (Clem.) 



Food plant: Aspen. 



Occurrence: Maine, New Hampshire, Massachusetts, and Connec- 

 ticut. 



Totals received: Collections, 7; larvae, 79; years, 1. 



Larvae: July to September. 



Pupae: Spring; hibernates as prepupal larvae in cocoons. 



Adults: June and July. 



Parasites: 



Collections Host 

 Parasite Years yielding larvae 

 Dipteral specimens recovered parasite collected 



Leskiomima tenera (Wied.) 1 1 1 11 



Hymenoptera: 



Horogenes n. sp 1 1 1 40 



Phytodietus burgessi (Cress.) 1 1 1 40 



Syzeuctus elegans (Cress.) 6 1 3 54 



Tetralopha asperatella (Clem.) 



Food plants: Black, scrub, and white oaks. 



Occurrence: Boxford, Melrose, and Wakefield, Mass.; and Say- 

 brook, Conn. 



Totals received: Not recorded. 



Larvae: August to October. 



Pupae: Spring; hibernates as a prepupal larva in cocoon. 



Adults: June and July. 



Parasites: 



Collections Host 

 Parasite Years yielding larvae 

 Dipteral specimens recovered parasite collected 



Metopiops n. (?) sp. (near pyralidis 



(Coq.)) 1 1 1 12 



Nemorilla floralis (Fall.) 3 1 1 12 



Hymenoptera: 



Idechthis sp 1 1 1 12 



Syzeuctus elegans (Cress.) 7 1 1 10 



Zaleptopygus sp. near tetralophae (Cush.)_ 2 1 1 12 



Tetralopha sp. (new)? 



Food plant: Beech. 



Occurrence: Maine and Massachusetts. 

 Totals received: Collections, 4: larvae, 43; years, 1. 

 Larvae: July, August, and September. 



Pupae: Spring (like other species of Tetralopha, hibernates in 

 cocoon, probably as prepupal larva). 

 Adults: June. 

 Parasites: 



Collections Host 



Parasite Years yielding larvae 



Hymenoptera! specimens recovered parasite collected 



Horogenes sp 2 1 1 18 



Syzeuctus elegans (Cress.) 6 1 3 25 



Zaleptopygus sp. near tetralophae (Cush.)_ 1 1 1 18 



471126—59 2 



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