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This change opens up opportunities for immigrant species to move into a competitor-free habitat. [4] Several groups of insects, including the genus Monochamus, have become adapted to exploit these conditions. M. scutellatus is a saproxylic insect, which means that at least part of its life cycle is dependent on either dead or dying wood. [6]
A smaller bark beetle often found in spruce is the foureyed spruce bark beetle Polygraphus rufipennis. The insect has a 1-, 2-, or 3-year life cycle, with 2-year being the most common, in which the flight and attack period starts in June or soon after most of the snow around the trees has melted.
Dendroctonus micans, the great spruce bark beetle, is a species of bark beetle native to the coniferous forests of Europe and Asia. The beetles burrow into the bark of spruce trees and lay eggs which develop into larvae that feed on the woody layers under the bark.
Rhizophagus grandis is a species of predatory beetle in the family Monotomidae. [1] R. grandis is a specialist predator on the larvae of the great spruce bark beetle (Dendroctonus micans), a pest of spruce trees (Picea), and is found in Eurasian forests where its prey is found.
In the 1940s, spruce bark beetle populations began to rise in the area of the Fraser Plateau. This killed many trees that were unable to be salvaged, and may have informed the decision to clearcut the future Bowron River outbreak. All known outbreaks of spruce bark beetle have accumulated in woody debris caused by logging or windthrow. [3]
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Tetropium fuscum, the brown spruce longhorn beetle, is a species of beetle in the family Cerambycidae. [1] It was described by Johan Christian Fabricius in 1787. [1] Tetropium fuscum is native to Europe and Northern Asia, and has been introduced to Nova Scotia, Canada. [2] Brown spruce longhorn is a pest of spruce trees.
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