Species Profile
Environmental Conservation Online System

Blunt-Nosed Leopard lizard (Gambelia silus)

Kingdom: Animalia
Class: Reptilia
Order: Squamata
Family: Crotaphytidae

Listing Status:   

General Information

The blunt-nosed leopard lizard (Gambelia silus) is a relatively large lizard the Iguanidae family. It has a long, regenerative tail, long, powerful hind limbs, and a short, blunt snout. Adult males are slightly larger than females, ranging in size from 3.4 to 4.7 inches in length, excluding tail. Females are 3.4 to 4.4 inches long. Males weigh 1.3 to 1.5 ounces, females 0.8 to 1.2. Although blunt-nosed leopard lizards are darker than other leopard lizards, they exhibit tremendous variation in color and pattern on their backs. Their background color ranges from yellowish or light gray-brown to dark brown, depending on the surrounding soil color and vegetation. Their undersides are uniformly white. They have rows of dark spots across their backs, alternating with white, cream-colored or yellow bands.

Lead Region:  California/Nevada Region (Region 8)
Date Listed: Mar 11, 1967

  • States/US Territories in which the Blunt-Nosed Leopard lizard is known to occur:  California
  • USFWS Refuges in which the Blunt-Nosed Leopard lizard is known to occur:  GRASSLANDS WILDLIFE MANAGEMENT AREA , KERN NATIONAL WILDLIFE REFUGE , PIXLEY NATIONAL WILDLIFE REFUGE , SAN LUIS NATIONAL WILDLIFE REFUGE

» Federal Register Documents

Most Recent Federal Register Documents (Showing 2 of 2 )
Date Citation Page Title
03/22/2006 71 FR 14538 14542 Initiation of 5-Year Reviews of 56 Species in California and Nevada: Notice of review.
03/11/1967 32 FR 4001 Endangered Species List - 1967

» Recovery

Recovery Plan Information Search
Current Recovery Plan(s)
Date Title Plan Action Status Plan Status
09/30/1998 Recovery Plan for Upland Species of the San Joaquin Valley, California View Implementation Progress Final
Other Recovery Documents (Showing 1 of 1 )
Date Citation Page Title Document Type
03/22/2006 71 FR 14538 14542 Initiation of 5-Year Reviews of 56 Species in California and Nevada: Notice of review.
  • Notice 5-year Review

    • » Critical Habitat

    No critical habitat rules have been published for the Blunt-Nosed Leopard lizard.

    » Conservation Plans

    Habitat Conservation Plans (HCP) (learn more) (Showing 5 of 12 : view all)
    HCP Plan Summaries
    ARCO Coles Levvee (ARCO Western Energy)
    Cal. Dept. of Corrections Delano Prison
    Cal. Dept. of Corrections Statewide Electrified Fence Project
    Chevron Pipeline
    Coalinga Cogeneration

    » Petitions

    No petition findings have been published for the Blunt-Nosed Leopard lizard.

    » Life History

    No Life History information has been entered into this system for this species.

    » Other Resources

    NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

    ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

    Last updated: November 22, 2009