Argyrotaenia dorsalana (Dyar)
Damage, symptoms and biologyArgyrotaenia dorsalana is a common innocuous solitary defoliator.
Mature larva up to 17 mm long. Head, yellowish green with black triangular lateral marking. Body, yellowish green, dark green middorsal pin stripe; dorsum of each abdominal segment marked with two pairs of faint yellow spots.
This species appears to overwinter in the egg stage. Larvae are present from early May to mid-June; pupation occurs in late June and adults emerge soon after.
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 host of Argyrotaenia dorsalana is Douglas-fir; other hosts include western hemlock and western redcedar.
- Date modified: