Orange tortrix

Orange tortrix -
  • Latin name: Argyrotaenia citrana (Fernie)
  • French name: Tordeuse des citrus
  • Order: Lepidoptera
  • Family: Tortricidae
Description

Distribution

British Columbia

Micro-habitat(s)

Annual shoot, Scale

Damage, symptoms and biology

This species can cause economic damage in conifer nursery production.

Mature larva up to 15 mm long. Head, brownish yellow with black lateral stripe. Body, yellowish brown above the spiracular line and light creamy yellow below. Each abdominal segment marked with two pairs of faint subdorsal creamy yellow spots (pinnacula).

The orange tortrix is polyphagous.

This species appears to overwinter in the pupal stage. Larvae are present from April to May, pupation occurs from May to June and adults emerge in July. In forest nurseries, particularly in greenhouses, this species appears to be multivoltine.

Canadian Forest Service Publications

Orange tortrix

Diet and feeding behaviour

  • Phyllophagous : Feeds on the leaves of plants.
    • Miner: Feeds inside the blade of a leaf, between the epidermal layers, or beneath the bark of plants, by first excavating a mine into these tissues.
    : Feeds on the leaves of plants.
    • Endophytic: Lives within plant or tree tissue.
Information on host(s)

Douglas-fir, western hemlock, lodgepole pine, grand fir, Sitka spruce, western redcedar, western yew, and on a broad range of hardwood and herbaceous hosts

Main host(s)

Lodgepole pine, Rocky Mountain Douglas-fir

Secondary host(s)

Balsam fir, poplars / aspens / cottonwoods, western hemlock, western larch, western white pine

Photos
  • Orange tortrix
  • Orange tortrix
  • Orange tortrix
  • Orange tortrix
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