Feralia comstocki Grote

 - Lateral view of mature larva, on western hemlock
  • Latin name: Feralia comstocki Grote
  • French name: Féralie de Comstock
  • Order: Lepidoptera
  • Family: Noctuidae





Damage, symptoms and biology

Feralia comstocki is a common innocuous solitary defoliator.

Mature larva to 30 mm long. Head, pale green, unmarked. Body, green with bright white middorsal and subdorsal stripes; spiracular stripe alternating white and yellow fringed above with red; linear yellowish green subspiracular markings above abdominal prolegs.

This species overwinters in the pupal stage. Adults emerge May to June. Larvae are present June to August and pupation occurs in August.

Life cycle (East of the Rockies)

Life cycle (East of the Rockies)
Stage/Month J F M A M J J A S O N D

Other information

Feralia jocosa is similar but differs in that the white, yellow and red spiracular stripe is broken into discrete segments rather than continuous.

Canadian Forest Service Publications


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)

Balsam fir, eastern white pine, Engelmann spruce, jack pine, Rocky Mountain Douglas-fir, subalpine fir, western hemlock, white spruce

  • Larva on eastern white pine
    Thérèse Arcand
  • Larva on jack pine
    Thérèse Arcand
  • Lateral view of mature larva, on western hemlock
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