Stenocorus nubifer

Family: Cerambycidae · Class: Insecta · Order: Coleoptera

Stenocorus nubifer is a longhorn beetle (Cerambycidae) native to western North America. As a member of the genus Stenocorus, this species exhibits the characteristic elongated antennae and cylindrical body form typical of cerambycid beetles. Adult beetles possess the standard cerambycid body plan with well-developed mandibles and antennae that are often as long as or longer than the body length. The species occurs across portions of western North America, though specific distributional data for California populations remains limited in the scientific literature. Like other Stenocorus species, S. nubifer likely inhabits forested and woodland environments where suitable host plant material is available. The genus Stenocorus is typically associated with coniferous and mixed forests throughout its range. Habitat requirements for S. nubifer have not been extensively documented, but members of the genus Stenocorus generally prefer forested environments with adequate dead or dying wood for larval development. These beetles typically occur in areas with mature trees that provide the woody substrates necessary for reproduction and larval growth. Elevation preferences and specific microhabitat requirements for this species have not been well characterized in the available literature. Like other longhorn beetles, S. nubifer likely follows a holometabolous development pattern with egg, larval, pupal, and adult stages. Larvae are wood-boring and develop within dead or dying tree material, playing an important ecological role in forest decomposition processes. Adult emergence timing and seasonal activity patterns have not been specifically documented for this species. Males and females likely locate each other through chemical cues, as is common among cerambycid beetles. The conservation status of Stenocorus nubifer has not been formally assessed by major conservation organizations. According to NatureServe, the species currently has a Global Status ranking of GNR (Global Not Ranked), indicating insufficient data to assign a conservation rank (NatureServe 2025). This ranking reflects the limited scientific information available about the species' population trends, distribution, and ecological requirements. The species does not appear on federal or state endangered species lists, nor does it have special conservation designations in California as of December 2025. Scientific documentation for this species remains limited. The information presented here synthesizes available data from taxonomic databases and general knowledge of cerambycid beetle ecology. Detailed studies of S. nubifer's specific habitat requirements, host plant associations, life history, and population status are lacking. If you have additional verified information about this species' biology, distribution, or ecology, please contact us to help improve this species account.

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