Coleotechnites atrupictella (Dietz)

 - Larva between silken needles
  • Latin name: Coleotechnites atrupictella (Dietz)
  • French name: Lieuse de l'épinette
  • Order: Lepidoptera
  • Family: Gelechiidae
  • Synonym(s): Eucordylea atrupictella Dietz
Description

Distribution

Canada

Micro-habitat(s)

Needle

Damage, symptoms and biology

Coleotechnites atrupictella is a relatively uncommon innocuous solitary defoliator.

Mature larva to 12 mm long. Head, brown unmarked. Body, red; creamy white addorsal and lateral stripes; large creamy white lateral markings.

This species appears to overwinter in the egg stage. Larvae are present from June to July, pupation occurs late July to August and adults emerge 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
Egg
 
 
Larva
 
Chrysalis
 
Adult
 

Canadian Forest Service Publications

http://cfs.nrcan.gc.ca/publications/search?query&process=Search

Diet and feeding behaviour

  • Phyllophagous : Feeds on the leaves of plants.
    • Leaftier: Ties two or more leaves together with silk threads, forming a tube in which to hide and feed.
Information on host(s)

Main host(s)

Black spruce, Engelmann spruce, ponderosa pine, Rocky Mountain Douglas-fir, shore pine, subalpine fir, western hemlock, white spruce

Secondary host(s)

Red spruce

Photos
  • Dorsal view of mature larva, on Engelmann spruce
  • Lateral view of mature larva, on Engelmann spruce
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