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Eupithecia interruptofasciata (Packard)

 - Dorso-lateral view of
mature larva (brown morph),
on common juniper
  • Latin name: Eupithecia interruptofasciata (Packard)
  • French name:
  • Order: Lepidoptera
  • Family: Geometridae



This species occurs throughout the host range in the interior of British Columbia; it also occurs north to the Yukon, east to Newfoundland and south to Massachusetts.



Damage, symptoms and biology

Eupithecia interruptofasciata is a rather uncommon innocuous solitary defoliator.

Mature larva to 16 mm long. This species has two distinct colour morphs. The more common green morph has a green head and body; black middorsal stripe and cream coloured lateral flange. The brown morph has a light tan head with dark markings; the body is rusty brown with a black middorsal stripe above the cream coloured lateral flange and purplish brown below.

This species overwinters in the egg stage. Larvae are present from mid-May to early August, pupation occurs from July to August and adults emerge from late July 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)

Eupithecia interruptofasciata is restricted to common juniper.

Main host(s)

Chinese Juniper, common juniper, creeping juniper, eastern redcedar, juniper, Rocky Mountain juniper


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