Annual District Reports: Forest Insect and Disease Survey ... - NFIS

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4.2.13 The Leaf Roller,•hila Wlshm.:- This leaf roller
was noted in trembling aspen stands at widely separated points, but
caused significant damage only in the vicinity of Moosomin where it
had rolled up to 40 per cent of the leaves on most trees. Elsewhere
in the District, light infestations persisted in the Park Block of
the Cypress Hills Provincial Forest, on the Forest Nursery Station at
Indian Head, in the Trans-Canada campsites at McLean and Broadview,
throughout most of Ketepwa Provincial Park, and in the vicinity of
Froude.
4.2.14 A Lecaniine Scale, Lecanium coryli L.:. A notable infestation
of this scale occurred on several planted American elm on the
Canada Department of Agriculture Experimental Farm at Indian Head.
Although the outbreak was localized, it was particularly severe on
some trees and as many as 90 scales were counted per lineal foot of
branch.
4.2.15 Nuttall Blister Beetle, Lytta nuttallii Say:- Adult beetles
occurred commonly in mid-season on shelterbelt and hedgerow plantings
of caragana at several locations, but in all instances defoliation
was light. The highest populations were observed in the Tuxford-Regina-
Mortlach area, and around Grenfell and Swift Current.
4.2.16 Boxelder Bug, Leptocorus trivittatus Say:- This insect,
which feeds on the leaves and seeds of manitoba maple, was recorded
only sporadically during the early part of the season and caused no
discernable damage. However, during late September, large numbers
of adults congregating on and about buildings caused considerable
concern to property owners in the Maple Creek, Swift Current and
Indian Head areas.
14 .2.17 Prairie Tent Caterpillar, Malacosoma lutescens (N. &
A notable decline in both populations and distribution of this tent
maker was evident in the central section of the District between
Indian Head and Swift Current where particularly heavy infestations
had persisted for several years. In 1963, the only significant
infestation in this area occurred in the Trans-Canada Campsite near
Besant where Saskatoon serviceberry was moderately defoliated.
4.2.18 Other Noteworthy Insects:-
sect ost ocal t Remarks
Alitca populi
(A leaf beetle)
bPo Trans-Canada Campsite Adults common on
at Broadview. most trees; no
noticeable damage.