Eupithecia placidata (Taylor)
Damage, symptoms and biologyEupithecia placidata is a relatively uncommon innocuous solitary defoliator.
Mature larva up to 20 mm long. Twig mimic, strongly resembles dead or brown juniper twig. Head, greenish brown with dark markings. Body, rusty brown; dark U-shaped marking on dorsum behind head capsule; fine dark middorsal pinstripe; dorsum marked with dark wishbone pattern.
This species overwinters in the pupal stage. Adults emerge in July; larvae are present from mid-July to September and pupation occurs in September.
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 Eupithecia placidata is Rocky Mountain juniper; this species has also been recorded from western redcedar.