Eudryas brevipennis

Short-winged Pearly

Family: Noctuidae · Class: Insecta · Order: Lepidoptera

The Short-winged Pearly (Eudryas brevipennis) is a moth in the family Noctuidae, subfamily Agaristinae. This species belongs to a small genus containing only three species within North America. The common name "Short-winged Pearly" likely refers to distinctive wing characteristics, though detailed morphological descriptions are not well documented in the scientific literature. Eudryas brevipennis occurs in western North America, with documented records from California, Nevada, Oregon, and Washington. In California, the species has been recorded from multiple counties including Humboldt, Mono, and Santa Barbara counties. Elevation records indicate the species can be found from near sea level to approximately 6,000 feet (1,829 meters), as documented at Martis Creek Lake Campground in Nevada. The distribution appears to be concentrated in mountainous and forested regions of the Pacific Coast and Sierra Nevada. Habitat requirements for this species have not been thoroughly studied. Based on collection localities, the moth appears to inhabit diverse forest and woodland ecosystems, from coastal redwood forests in Humboldt County to montane environments in the Sierra Nevada. Collection sites include campgrounds and natural areas within national forests, suggesting an association with relatively undisturbed forest habitats. The species' presence across a broad elevation gradient indicates tolerance for varied climatic conditions. Behavioral and ecological information for Eudryas brevipennis remains limited. Adult flight records from lepidopterist surveys indicate activity from late summer through early fall, with specimens collected in August and September. Like other members of the subfamily Agaristinae, this species likely exhibits crepuscular or nocturnal activity patterns typical of noctuid moths. Host plant relationships have not been documented, representing a significant knowledge gap for this species. Larval ecology, including preferred food plants, development timing, and overwintering strategies, requires further investigation. Eudryas brevipennis appears on California's Special Animals List, maintained by the California Department of Fish and Wildlife's Natural Diversity Database (CNDDB). This designation indicates the species is tracked as part of California's "species at risk" or "special status species" program, though it carries no formal legal protection status. The species does not appear to have federal listing status under the Endangered Species Act. Population trends and conservation threats are not well documented, though habitat loss and fragmentation in western forest ecosystems could potentially impact local populations. Collection records suggest the species has a relatively restricted distribution within its range states, with most observations concentrated in specific mountainous regions. The apparent rarity of collection records may reflect either genuine scarcity or limited survey effort for this nocturnal species. Additional research is needed to assess population status, habitat requirements, and potential conservation needs for this poorly known western North American moth.

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, and more.