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Syndemis afflictana Walker

  • Latin name: Syndemis afflictana Walker
  • French name:
  • Order: Lepidoptera
  • Family: Tortricidae


British Columbia

This species is generally distributed throughout British Columbia south of 550 latitude; it also occurs east to Nova Scotia and south to California.



Damage, symptoms and biology

Syndemis afflictana is a common innocuous solitary defoliator.

Mature larva up to 20 mm long. Head, green unmarked. Body, yellowish green with yellowish subdorsal stripe and prominent cream coloured spiracular stripe.

Overwinters as a penultimate to mature larva. Larvae present from May to early June. Pupation occurs in early June and adults from fly mid-to late June. Larvae are present again 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)

The principal host of Syndemis afflictana is Douglas-fir; other hosts include subalpine fir and balsam fir.

Main host(s)

Douglas-fir, Rocky Mountain Douglas-fir, western hemlock

Secondary host(s)

Amabilis fir, grand fir, Sitka spruce, subalpine fir


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