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Forest Insect and Disease Survey; Ontario, 1965 - NFIS

Forest Insect and Disease Survey; Ontario, 1965 - NFIS

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B 38<br />

TABLE 20 (continued)<br />

<strong>Insect</strong> Host(s) emar<br />

Pikonema dimmockii (Cress.)<br />

Pissodes approximatus Hopk.<br />

Pleroneura borealis Felt<br />

Pristiphora geniculata (Htg.)<br />

Pseudexentera oregonana Wlshm.<br />

Pulicalvaria piceaella Kft.<br />

Pulicalvaria thujaella Kft.<br />

Rhabdophaga swainei Felt<br />

Semiothisa dispuncta Gn.<br />

Sparganothis pettitana Rob,<br />

Sternochetus lapathi (Linn.)<br />

Taniva albolineana Kft.<br />

Trisetacus grosmanni Keifer<br />

Zeiraphera fortunana Kft.<br />

Zeiraphera ratzeburgiana Ratz.<br />

Zellaria haimbachi Busck.<br />

wS<br />

wP<br />

bF<br />

Mo<br />

tA<br />

wS<br />

eC<br />

wS<br />

bF, wS<br />

Ba<br />

bPo<br />

wS<br />

bF<br />

wS<br />

wS<br />

jP<br />

Found in small numbers in beating<br />

samples.<br />

In association with a Hylobius sp.<br />

caused considerable branch mortality<br />

in young trees in S<strong>and</strong>yHill Tract,<br />

Woolwich Township.<br />

Light damage in Osprey Township.<br />

Light, medium <strong>and</strong> heavy infestation<br />

common on individual <strong>and</strong> small<br />

clumps of trees.<br />

Medium infestations in Hay <strong>and</strong><br />

Sydenham townships, light in Morris<br />

Township.<br />

Low population levels observed at<br />

several locations in the district.<br />

Small numbers feeding in association<br />

with other cedar leaf miners.<br />

Light infestations in Grey County.<br />

Found commonly in beating samples<br />

in September.<br />

Light infestations in Glenelg<br />

Township.<br />

Special collections taken in<br />

Normanby <strong>and</strong> St. Edmund townships.<br />

Low population in the Creditville<br />

Tract, E. Oxford Township.<br />

20+ adults collected from beating<br />

sample in Glenelg Township.<br />

Low population in Euphrasia Township.<br />

Moderate <strong>and</strong> severe damage recurred<br />

in St. Edmunds Township.<br />

Light infestations common.

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