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Neodiprion mundus (Rohwer)

 - Penultimate instar larvae feeding on ponderosa pine needle
  • Latin name: Neodiprion mundus (Rohwer)
  • French name:
  • Order: Hymenoptera
  • Family: Diprionidae


British Columbia



Damage, symptoms and biology

Neodiprion mundus is a common and rarely destructive colonial defoliator.

Mature larva to 24 mm long. Head, unmarked black. Body, greyish green; light grey middorsal pinstripe; broad greenish addorsal stripes; light grey below lateral midline. Prepupal larvae similarly marked except brown. Seven pairs of abdominal prolegs.

This species overwinters in the egg stage. Larvae are present from late May to June. Mature larvae spin cocoons in July and adults emerge in late July to August. Eggs are laid in niches cut into the edge of a needle.

Life cycle (West of the Rockies)

Life cycle (West of the Rockies)
Stage/Month J F M A M J J A S O N D

Other information

Localized outbreaks were recorded in the Deadman River area from 1946 to 1951 and along the north arm of Okanagan Lake in 1964.

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)

Main host(s)

Ponderosa pine


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