Seasonal-specialist
Guides
Cicurina brevis
Cicurina brevis is a small araneomorph spider species distributed across northern North America. A 2024 study identified this species as a potential subnivium specialist, exhibiting higher population densities beneath seasonal snowpack in winter than during summer months. This seasonal activity pattern suggests adaptation to cold-weather environments, distinguishing it from typical summer-active forest floor spiders.
Hadromorphus inflatus
Hadromorphus inflatus is a species of click beetle (Elateridae) native to northeastern North America. The species was previously classified under the genus Porrhodites and has been identified as a potential subnivium specialist—an arthropod adapted to the air pocket beneath winter snowpack. Research suggests it dominates subnivium communities during winter months and is rare or inactive during summer, indicating a specialized cold-season life history.
Lesteva pallipes
Lesteva pallipes is a species of rove beetle (Staphylinidae) first described by J.L. LeConte in 1863. Research indicates this species may be a specialist of the subnivium—the air pocket beneath winter snowpack—where it remains active during winter months and is rare or inactive during summer. This apparent seasonal specialization makes it potentially vulnerable to climate change impacts on snowpack persistence.