Language selection


Xestia praevia (J.B. Smith)

  • Latin name: Xestia praevia (J.B. Smith)
  • French name:
  • Order: Lepidoptera
  • Family: Noctuidae


British Columbia

This species is generally distributed throughout the host range in the southern interior of British Columbia; it also occurs south to California.



Damage, symptoms and biology

Xestia praevia is a common innocuous solitary defoliator.

Mature larva up to 27 mm long. This species has two distinct colour morphs. The more common green morph has a green head with black spots. The body is green, with white middorsal and subdorsal stripes and a broad greenish white spiracular stripe. The less common brown morph has a creamy brown head with black bars on the vertices and black netting. The body is brown, with broken greyish middorsal and subdorsal stripes and a broad brownish white spiracular stripe.

This species probably overwinters as a partly grown larva. Larvae are present from May to early July, pupation occurs in July and adults emerge from July to August.

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 Xestia praevia is ponderosa pine.

Main host(s)

Ponderosa pine


Page details

Date modified: