Pine zale

Pine zale - Dorsal view of mature larva (rusty brown morph), on lodgepole pine
  • Latin name: Zale duplicata (Bethune)
  • French name: Noctuelle du pin
  • Order: Lepidoptera
  • Family: Noctuidae
Description

Distribution

Quebec, New Brunswick, Ontario, Western Canada

Micro-habitat(s)

Needle

Damage, symptoms and biology

Zale duplicata is a common innocuous solitary defoliator.

Mature larva to 35 mm long. Head, mottled brown or grey with prominent white marking at vertices. Body, elongate, rusty brown (most common) to dark grey. Middorsal white to greyish white Y marking on the posterior margin of each abdominal segment. Prominent pair of tubercles on dorsum of eighth abdominal segment. First two pairs of mid-abdominal prolegs reduced in size.

This species overwinters in the pupal stage. Adults emerge in May, larvae are present June to August and pupation occurs 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

Pine zale

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)

Main host(s)

Eastern white pine, jack pine, red pine, shore pine

Photos
  • Pine zale
  • Pine zale
  • Pine zale Dorsal view of mature larva (rusty brown morph), on lodgepole pine
  • Pine zale Dorso-lateral view of mature larva (rusty brown morph), on lodgepole pine
  • Pine zale Dorso-lateral view of mature larva (grey morph), on lodgepole pin
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