Macromoths of Northwest Forests and Woodlands
Synaxis cervinaria [Geometridae]
Wingspan 4.3 cm. Forewing is strongly falcate, red-brown to gray with narrow basal and median lines. This geometrid is common and widely distributed in western North America. Moths fly in spring to mid summer. Caterpillars are generalist feeders on the foliage of flowering trees and shrubs, such as alder (Alnus), madrone (Arbutus menziesii), manzanita (Arctostaphylos), bitterbrush (Purshia tridentata), and willow (Salix).
Similar species: Moths of other Synaxis species fly in fall; Prochoerodes forficaria (Geometridae) forewing is mottled gray with the median line abruptly curved at the wing apex, widely distributed, caterpillars are generalist feeders on the foliage of flowering trees and shrubs.
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