Alameda striped racer (Masticophis lateralis euryxanthus) is commonly associated with small to large patches of chaparral or coastal scrub vegetation, interspersed with other native vegetation types and rock lands throughout Contra Costa County, most of Alameda County, and portions of northern Santa Clara and western San Joaquin counties. Chaparral and coastal scrub vegetation serve as the center of home ranges, provide for concealment from predators, and foraging opportunities. However, verified observations have been made up to 6.4 kilometers (4 miles) from coastal scrub and chaparral habitat.
Federal Status
THREATENED
- Draft Recovery Plan – 2002
- 5-Year Review – 2011
- Critical Habitat Designation – 2006
- USFWS Species Account
California Status
THREATENED
Survey Protocol
- Guidelines for Section 10(a)(1)(A) Permits Specific to the Alameda Whipsnake 2004
- Habitat Use and Management Considerations for the Threatened Alameda Whipsnake (Masticophis lateralis euryxanthus) in Central California
Home Range and Critical Habitat
Map Data Source: adapted from californiaherps.com and California Wildlife Habitat Relationship (CWHR), USFWS Critical Habitat Data Portal
Photo credits: header (cropped) and featured image – Derell Licht on Flickr