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Eupithecia longipalpata (Packard)

  • Latin name: Eupithecia longipalpata (Packard)
  • French name:
  • Order: Lepidoptera
  • Family: Geometridae


British Columbia

This species occurs throughout coastal British Columbia; it also occurs south to California.



Damage, symptoms and biology

Eupithecia longipalpata is a common innocuous solitary defoliator.

Mature larva up to 20 mm long. This species has two distinct colour morphs. The more common green morph has a yellowish green head and body. Body with a dark green middorsal line, and creamy yellow lateral flange. The brown morph is similarly marked.

This species overwinters in the larval stage. Larvae are present from April to early June. Pupation occurs in early June and adults emerge late June to July and lay eggs. Larvae are present again from mid-August to October.

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)

The principal hosts of Eupithecia longipalpata are Douglas-fir and western hemlock; other hosts include mountain hemlock and grand fir.

Main host(s)

Grand fir, Rocky Mountain Douglas-fir, western hemlock

Secondary host(s)

Amabilis fir, Douglas-fir, lodgepole pine, mountain hemlock, Sitka spruce, subalpine fir, western redcedar


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