Occurrence 
of parasites 
-- 1W 
Years 
recorded 
Distribution 
1948 
Elgin, Grey, 
Frontenac, 
Huron, Middle 
1946 
sex, Norfolk, 
Perth,Simcoe 
and Waterloo 
Elgin 
1938 
Welland 
1938 
Welland 
1938 
Welland 
1938 
Welland 
1941 
Essex and 
1943 
Lambton 
Northumberland 
1948 
Norfolk 
1938 
Welland 
1946 
Lambton 
Date 
emerged 
1947 
1938 
1938 
Norfolk 
Welland 
30 June - 
26 July*4 
26 June 1 46 
24 June * 38 
7 June'38 
28 June*38 
13 June 1 38 
21 April - 
26 June'41 
5 July*43 
30 June*48 
21-29 June 
'38 
25 June'46 
29 July'47 
24 June'38 
X 0 
Welland 
24-30 June 
'38 
this parasite 
« coll.I No. larvae 
_ana/or pupae 
18 
63 
80 
