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Macromoths of Northwest Forests and Woodlands

Neoalcis californiaria [Geometridae]

JPG-Neoalcis californiaria

Wingspan 3.6 cm. Forewing is mottled cream to dark brown with wavy dark median and basal lines. This geometrid is common and occurs west of the Cascade Mountains. Moths fly in late summer into fall. Caterpillars are generalist feeders on the foliage of flowering trees and shrubs, such as maple (Acer), alder (Alnus), oak (Quercus), rose (Rosa), and huckleberry (Vaccinium), and the foliage of many conifers, such as Douglas-fir (Pseudotsuga menziesii) and fir (Abies).

Similar species: among the species that have similar gray, brown, and white colors with wavy black lines, N. californiaria is characterized by its late flight period and overwintering caterpillars.

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