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Macromoths of Northwest Forests and Woodlands

Orthosia transparens [Noctuidae]


JPG-Orthosia transparens

Wingspan 3.7 cm. Forewing is falcate, light red to dark red-brown with a black reniform spot; hindwing is dark gray to black; males with filiform antennae. This noctuid is common in dry forests in the Pacific West. Moths fly in early spring. Caterpillars feed on the foliage of madrone (Arbutus menziesii) and rhododendron (Rhododendron).

Similar species: Orthosia pulchella forewing is gray, red or brown, often with a black median band, male antennae strongly pectinate, widely distributed in western North America, moths fly in early spring, caterpillars feed on the foliage of manzanita (Arctostaphylos); Orthosia mys hindwing is pink-white, moths fly in fall, caterpillars feed on foliage of manzanita (Arctostaphylos).


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