Adult-overwintering
Guides
Stenosphenus
Stenosphenus is a genus of longhorn beetles (family Cerambycidae) first described by Haldeman in 1847. The genus contains approximately 22 described species distributed across North America from the eastern United States through Mexico and into Central America. Some species exhibit specialized host associations with particular tree genera, particularly hickories (Carya). At least one species, Stenosphenus notatus, is notable for overwintering as an adult—an uncommon life history strategy among eastern North American cerambycids.
Stenosphenus notatus
Stenosphenus notatus is a longhorned beetle (Cerambycidae) native to eastern North America. It is notable for its exceptionally early spring emergence, appearing during the first warm days of late March and disappearing before most other longhorned beetles become active. The species is closely associated with hickory trees (Carya), where larvae develop beneath the bark of dead limbs. Adults overwinter, an unusual life history strategy among eastern U.S. cerambycids.