Enypia griseata (Grossbeck)

 - Dorso-lateral view of mature larva, on Douglas-fir
  • Latin name: Enypia griseata (Grossbeck)
  • French name:
  • Order: Lepidoptera
  • Family: Geometridae
Description

Distribution

Alberta, British Columbia

Micro-habitat(s)

Needle

Damage, symptoms and biology

Enypia griseata is a common innocuous solitary defoliator.

Mature larva to 25 mm long. Head, brown, frontal triangle green. Body, pale green; thin dark green middorsal stripe; white subdorsal stripe extending onto head; yellowish white spiracular stripe.

This species overwinters as a fourth-instar larva. Feeding resumes in the spring and continues until late June or early July. The pupal stage lasts 12 to 24 days and occurs between June and July. Adults emerge from July to August. Females lay about 75 eggs on foliage during August. Larvae emerge about two weeks later and feed until the onset of cold weather.

Life cycle (West of the Rockies)

Life cycle (West of the Rockies)
Stage/Month J F M A M J J A S O N D
Egg
 
Larva
 
 
Chrysalis
 
Adult
 

Canadian Forest Service Publications

http://cfs.nrcan.gc.ca/publications/recherche?query=&process=Recherche

Diet and feeding behaviour

  • Phyllophagous : Feeds on the leaves of plants.
    • Free-living defoliator: Feeds on and moves about freely on foliage.
Information on host(s)

Main host(s)

Engelmann spruce, grand fir, Rocky Mountain Douglas-fir, subalpine fir, western hemlock

Photos
  • Dorso-lateral view of mature larva, on Douglas-fir
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