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Females release an airborne pheromone that is capable of attracting males from miles. Females lay eggs singly or groups of two on Larch at the base of the needles, or on the leaves and twigs of host plants. Eggs hatch within 8 to 19 days. Caterpillars are solitary feeders.

Cocoon Identification

© Rob Hannawacker

Cocoons are compact. They are spun close to the ground on the trunk of the tree or on the stem of a host plant. They are usually found near thick undergrowth.

Conservation Status

Resident – uncommon
Vermont not listed
Global G4

Distribution and Habitat

Found in suburban gardens to wooded habitats, with a preference for Tamarack forests and boggy forests.

Host Plants in Vermont



 Vermont Atlas of Life Records