WSU Extension


Caption: Pandora moth adult
Photo by: Unknown
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Pine : Pandora moth
(revision date: 4/23/2014)

Pandora moth larvae are brownish- to yellowish-green, spiny, and about one inch long at maturity. The larvae feed on the needles of pines, especially ponderosa, Jeffrey, and lodgepole. The stubs of eaten needles remain on the twigs and the crowns of infested trees are often thinned. The larvae may cause severe defoliation when there are large outbreaks. They travel in single file when moving to new feeding areas. The adult is a brown-gray moth with black markings on the wings. This is a sporadic pest of forest and landscape trees.
Management Options

Non-Chemical Management
  • Remove and destroy larvae by hand to control minor infestations.
  • It may be necessary to prune to improve the appearance of severely defoliated trees.
Select non-chemical management options as your first choice!

Chemical Management

None recommended

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Caption: Pandora moth adult
Photo by: Unknown