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Contact information
For information on Wisconsin's rare animals, contact:
Rich Staffen
Conservation Biologist
608-266-4340

Slender Glass Lizard (Ophisaurus attenuatus)


Overview

Overview

Slender glass lizards (Ophisaurus attenuatus), listed as Endangered in Wisconsin, prefer sandy oak savannas, sand prairies, old fields with sandy soils, and woodland edges around and within all of these habitats. Glass lizards overwinter in burrows they create by forcing their bodies through lose sandy soils. This lizard is active from mid-March through October 15. Breeding occurs in May, eggs are deposited from late June to early July and hatching occurs in August. See the species guidance document for avoidance measures and management guidance from the Natural Heritage Conservation Program.

State status

Status and Natural Heritage Inventory documented occurrences in Wisconsin

The table below provides information about the protected status - both state and federal - and the rank (S and G Ranks) for Slender Glass Lizard (Ophisaurus attenuatus). See the Working List Key for more information about abbreviations. Counties shaded blue have documented occurrences for this species in the Wisconsin Natural Heritage Inventory database. The map is provided as a general reference of where occurrences of this species meet NHI data standards and is not meant as a comprehensive map of all observations.

Note: Species recently added to the NHI Working List may temporarily have blank occurrence maps.


Documented locations of Ophisaurus attenuatus in the Natural Heritage Inventory Database as of July 2015.
Summary Information
State StatusEND
Federal Status in Wisconsinnone
State RankS1
Global RankG5
Tracked by NHIY
WWAP SGCN

Species guidance


This document contains identification and life history information for Slender Glass Lizard. It also describes how to screen projects for potential impact to this species, lists avoidance measures, and provides general management guidance.

Slender Glass Lizard Species Guidance [PDF]


Photos/Video

Photos


Slender Glass Lizard

Slender glass lizard (WI Endangered) inhabits sandy oak savannas and open woodlands.

Photo © A.B. Sheldon.

Slender Glass Lizard

Western Slender Glass Lizard hatching

Photo © A.B. Sheldon.

Slender Glass Lizard

Juvenile Western Slender Glass Lizard

Photo © A.B. Sheldon.

Slender Glass Lizard

Juvenile Western Slender Glass Lizard

Photo © A.B. Sheldon.

Slender Glass Lizard

Juvenile Western Slender Glass Lizard

Photo © A.B. Sheldon.

Slender Glass Lizard

Juvenile Western Slender Glass Lizard

Photo © A.B. Sheldon.

Slender Glass Lizard

Western Slender Glass Lizard

Photo © A.B. Sheldon.

Slender Glass Lizard

Western Slender Glass Lizard

Photo © A.B. Sheldon.

Slender Glass Lizard

Slender glass lizard in hand

Photo by Rich Staffen, WDNR.

Slender Glass Lizard

Slender glass lizard

Photo by Rori Paloski, WDNR.

Slender Glass Lizard

Photo © Andrew Badje.


Wildlife Action Plan

Wisconsin Wildlife Action Plan graphic

Natural community (habitat) associations

The table below lists the natural communities that are associated with Slender Glass Lizard. Only natural communities for which Slender Glass Lizard is "high" (score=3) or "moderate" (score=2) associated are shown. See the key to association scores for complete definitions. Please see the Wildlife Action Plan to learn how this information was developed.

Ecological landscape associations

The table below lists the ecological landscape association scores for Slender Glass Lizard. The scores correspond to the map (3=High, 2=Moderate, 1=Low, 0=None). For more information, please see the Wildlife Action Plan.

This map shows the probability of Slender Glass Lizard occurring in each of Wisconsin's Ecological Landscapes.  Actual scores can be found in the table to the left.


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Landscape-Community combinations of highest ecological priority*

Ecological priorities are the combinations of natural communities and ecological landscapes that provide Wisconsin's best opportunities to conserve important habitats for a given Species of Greatest Conservation Need. The 10 highest scoring combinations are considered ecological priorities and are listed below. More than 10 combinations are listed if multiple combinations tied for 10th place. For more information, please see the Wildlife Action Plan.


* Ecological priority score is a relative measure that is not meant for comparison between species. This score does not consider socio-economical factors that may dictate protection and/or management priorities differently than those determined solely by ecological analysis. Further, a low ecological priority score does not imply that management or preservation should not occur on a site if there are important reasons for doing so locally.

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Issues/threats and conservation actions

Conservation actions respond to issues or threats, which adversely affect species of greatest conservation need (SGCN) or their habitats. Besides actions such as restoring wetlands or planting resilient tree species in northern communities, research, surveys and monitoring are also among conservation actions described in the WWAP because lack of information can threaten our ability to successfully preserve and care for natural resources.

Threats/issues and conservations actions for rare animals

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Last revised: Thursday, May 04, 2017