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Semiothisa sexmaculata Pack. No 4687 
Years recorded : 1938 - 1948 incl. 
Food Plants: LARCH (86), Hemlock (2), Spruce (1) and Pine (l) 
D istribution : Brant, Bruce• Carleton, Dufferin, Durham, Frontenac, Grenville, Grey, Haldimand, Hastings, 
L ^? 1 ° X jn d Md ington, Norfolk, Northumberland, Ontario, Peterborough, Renfrew, Simcoe 
and Victoria, Stormont. 
Larvae : July, Aug , and Sept. 
Number of Collections: 
Pupae: July, Aug, and Sept. Adults : July also (June)* 
13 (-38), 4 (*39), 9 («40), 7 (*4l), 5 (»42), 7 (*43), 4 (»44), 1 (-45), 
11 ('46), 10 (>47), 19 (*48) =90 ' V 
. Total Number of Specimens : .61 ('38), 20 ('39), 30 (*40), 19 (»4l), 90 (»42), 47 («43) 27 (*44) 
1 (*45), 86 (*46), 55 (*47), 149 ('48) = 585 ’ ' 
Name 
Occurrence 
of parasites 
Years 
recorded 
Distribution 
Diptera 
Tachinidae 
Phrynolydel1a eufitchiae 
9 
1938 
Brant 
(Tns.) 
2 
1948 
Durham and 
Simcoe 
Hymenoptera 
Ichneumonidae 
Casinaria semiothisae 
1 
1940 
Hastings 
Wly. 
n ri ii 
1 
1943 
Carleton 
It 1! 1! 
1 
1946 
Simcoe 
n it ii 
5 
1948 
Renfrew, 
Carleton, 
Durham and 
Norfolk 
Date 
emerged 
10-17 Augc 
'38 
1 Sept.'48 
and 
(Feb.'49) 
No. coll. 
Coll, yielding 
this parasite 
(Feb.>41) 
12 July 
’43 
(Feb.*47) 
28 July- 
17 Aug. 
'48 
2 
2 
1 
1 
No. larvae 
and/or pupae 
33 
21 
4 
8 
42 
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