Species Profile
Alameda Whipsnake
Species Details
Common NameAlameda Whipsnake
Scientific NameMasticophis Lateralis Euryxanthus
Federal Listing StatusThreatened
Federal Regulating AgencyU.S. Fish and Wildlife Service
State Listing StatusThreatened (CA)
State Regulating AgencyCalifornia Department of Fish and Game
- Ohlone Preserve Conservation Bank
- Pleasanton Ridge Conservation Bank

Species Range
Alameda whipsnakes are typically found in chaparral—northern coastal sage scrub and coastal sage. The Alameda whipsnake currently inhabits the inner coast range mostly in Contra Costa and Alameda counties, with additional occurrence records in San Joaquin and Santa Clara counties. The current distribution of the subspecies has been reduced to five separate areas with little or no interchange due to habitat loss, alteration, and fragmentation: Sobrante Ridge, Tilden/Wildcat Regional Parks to the Briones Hills, in Contra Costa County (Tilden-Briones population) Oakland Hills, Anthony Chabot area to Las Trampas Ridge, in Contra Costa County (Oakland-Las Trampas population) Hayward Hills, Palomares area to Pleasanton Ridge, in Alameda County (Hayward-Pleasanton Ridge population) Mount Diablo vicinity and the Black Hills, in Contra Costa County (Mount Diablo-Black Hills population) Wauhab Ridge, Del Valle area to the Cedar Mountain Ridge, in (Sunol-Cedar Mountain population).
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