- 25 
Halisldota harrisii Walsh 
Years_recorded? 1939, 1941, 1944, 1946, 1947 and 1948 
Food Plants? 
Ash (5), Beech 
Chestnut (1), 
(5), Birch (4), Elm (3), Sycamore (3), Maple (3), Basswood (3) 
Butternut (1), Ironwood (1)„ 
Distributio n 
Carleton, Durham, Elgin, Essex, Haldimand, 
Simcoe, Welland and Gatineau (Qua,) 
Kent, Lanark, Lennox and Addington 
I nfestation ; 1939 light in Essex 
No, 985 
Larvae : Aug. 
Pupae ; Sept, 
Adults g (June & July 
Number of Collections: 
Total Number of Specimens : 
1 039), 2 ('41), 2 ( 1 44), 3 ('46), 6 (’47), 15 (*48) - 2Q 
4 ( 3 39), 4 (*41), 2 (’44), 5 ('46), 12 ('47) 32 (<48) = 59 
--- - - - _ 
PARASITES 
Name 
Occurrence 
of parasites 
Years 
recorded 
Distribution 
Date 
emerged 
Coll, yielding 
this narasitu 
Diptera 
No. Coll. 
No. larvae 
and/or pupae 
Tachinidae 
Phrynolydella hyphantriae 
(Til.) 
1 
1947 
Carleton 
(16 Feb.'48 
) 1 
4 
Compsilura concinnata (M. ) 
L 
2 
1948 
Lanark 
(9-13 Sept. 
3 48) 
1 
1 
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