Nadata oregonensis

Nadata oregonensis can be distinguished from related species by its geographic range and association with western North American habitats. Within the genus Nadata, identification to species level requires examination of genitalia and wing pattern details. The species is smaller than Nadata gibbosa and lacks the pronounced gibbous thoracic tuft characteristic of that species.

Associated with forested and woodland habitats in western North America, particularly regions supporting oak and mixed hardwood vegetation.

North America, with records from the western United States including Oregon, Washington, and California. Distribution records indicate presence in Pacific coastal and interior western regions.

Larvae likely function as herbivores on woody vegetation, contributing to nutrient cycling and serving as prey for parasitoid wasps and other natural enemies. The genus Nadata is documented as a host for the thread-waisted wasp Ammophila procera, which provisions nests with paralyzed Nadata caterpillars.

No direct economic significance documented. Not known to be a pest species. Of interest to lepidopterists and naturalists documenting western North American moth fauna.

• Nadata gibbosaLarger species with more prominent thoracic tuft; occurs in eastern North America with range overlap in some areas; distinguished by size and thoracic morphology.
• Nadata nasoniSimilar western species; requires genitalic examination for reliable separation.

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