Epinotia canadensis

Systematic position: Epinotia canadensis belongs to the order Lepidoptera, family Tortricidae. This species is a recognized pest in forestry and ornamental nurseries, primarily affecting coniferous trees, with its biological cycle synchronized with the bud burst of its host plants.

Host plants: The primary host for this pest is the genus Picea (spruce). Epinotia canadensis is specifically known for its association with white spruce (*Picea glauca*), although it may infest other spruce species depending on local ecological conditions and host availability in the region.

Biology and life cycle: The insect typically completes one generation per year. Larvae overwinter in cocoons located in bark crevices or forest litter. In the spring, they emerge to feed on developing buds and young needles. Pupation occurs within the webbed larval shelters, followed by the emergence of adults that mate and lay eggs on the needles or bud scales.

Damage and severity: The damage is caused by larval feeding. Early-stage larvae bore into the terminal and lateral buds, destroying them and preventing normal shoot elongation. As they grow, larvae spin needles together with silk, creating protective nests. Severe infestations can cause stunted growth, deformed tree structure, and significant aesthetic damage in nursery settings.

• Monitoring of tree buds in early spring to detect larval activity.
• Pruning and destroying infested twigs containing larval nests.
• Application of Bacillus thuringiensis sprays during the early larval development stage.
• Use of systemic insecticides in professional nursery operations when threshold levels are exceeded.
• Encouraging natural predators and parasitoids within the forest ecosystem.