Forest Insect Conditions In British Columbia

Excerpt from Forest Insect Conditions in British Columbia: A Preliminary Survey The over-wintered larvae complete their transformations, emerge from the bark as adults, from the middle of July onwards, and start their egg-tunnels, probably at once, in the trees already infested. At Princeton, this season, practically all the broods had emerged from the red-tops examined (trees attacked the previous summer) by the latter part of August. The exact time of emergence of the different over-wintered broods will depend to some extent upon the altitude, location of the trees in regard to sunlight, and upon the lateness of the season' About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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Western spruce budworm infestations, which persisted for the past several years in Douglas-fir stands in the southeastern part of the Vancouver Mainland section, subsided in 1978. Mountain pine beetle outbreaks, which killed large tracts of lodgepole pine in the Klinaklini River Valley, declined. Winter moth continued to cause heavy defoliation of urban forests in the Greater Victoria area. Gypsy moth was found for the first time in British Columbia, in the Vancouver area.‍?‍?Drought injury in immature Douglas-fir stands was widespread on Vancouver Island and the Mainland. Douglas-fir dwarf mistletoe was found for the first time in coastal British Columbia, at Slesse Creek in the Chilliwack River Valley.