Eupithecia unicolor (Hulst)
Damage, symptoms and biologyEupithecia unicolor is a common innocuous solitary defoliator.
Mature larva to 20 mm long. Twig mimic. Head, brown with dark mottle. Body, mottled yellowish green, dorsum with faint yellow diamond pattern, dark green middorsal pin stripe.
This species appears to overwinter as a mid-instar larva. Larvae are present April to May. Pupation occurs in June and adults emerge in July.
Life cycle (West of the Rockies)
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.