California-channel-islands
Guides
Coelus
Dune Beetles
Coelus is a genus of darkling beetles (Tenebrionidae) endemic to coastal dune habitats along the Pacific Coast of North America. Species within this genus are restricted to sandy beach and dune ecosystems, with some members showing island endemism. The genus includes both mainland and Channel Island species, with documented phylogeographic structure among island populations. Coelus species are part of the tribe Coniontini within the subfamily Pimeliinae.
Coelus pacificus
Channel Islands Dune Beetle
Coelus pacificus is a darkling beetle (family Tenebrionidae) endemic to the California Channel Islands. It inhabits dune environments across multiple islands, with distinct phylogeographic structure separating northern island populations (Santa Cruz, Santa Rosa, San Miguel, San Nicolas) from southern populations (Santa Catalina, San Clemente). The species is morphologically similar to the mainland congener Coelus ciliatus but represents a valid, independently evolving lineage. Conservation concerns arise from its restricted insular distribution and vulnerability to habitat disturbance.
Eucosma clementeana
Eucosma clementeana is a tortricid moth described from San Clemente Island, California in 2010. As a recently described species in the large genus Eucosma, its biology and ecology remain poorly documented. The species belongs to the Olethreutinae subfamily, whose larvae are predominantly internal feeders on plant tissues. Its restricted type locality suggests potential island endemism, though its full range requires further survey.
Melanopleurus fuscosus
Melanopleurus fuscosus is a seed bug in the family Lygaeidae, described by Brailovsky in 1977. The species has been documented from Santa Cruz Island off the coast of California, with 211 observations recorded on iNaturalist. As a member of the Lygaeidae, it belongs to a family of true bugs commonly known as seed bugs, though specific biological details for this species remain limited in published literature.