Archips tsugana (Powell)
Damage, symptoms and biologyArchips tsugana is a rather uncommon innocuous solitary defoliator.
Mature larva up to 17 mm long. Head, black unmarked. Body, yellowish green, lacks distinct markings.
This species appears to overwinter in the egg stage. Larvae are present from July to early August; pupation occurs in August and adults emerge soon after.
Other informationAcleris gloverana is similar but differs in that the length of the thoracic shield is shorter than the head rather than of equal length; also the head is brown rather than black.
Canadian Forest Service Publications
Diet and feeding behaviour
: Feeds on the leaves of plants.
- Free-living defoliator: Feeds on and moves about freely on foliage.
Information on host(s)
The principal hosts of Archips tsugana are Sitka spruce and western hemlock.
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