Spider
Mermessus tridentatus (Emerton, 1882)

Taxonomy

Description

Diagnostic characters

Ecological class

Trogloxene

Realm

Terrestrial

Distribution

Range

Known from four counties across three states.

Continent

North America

Country

United States

States and provinces

Alabama, Illinois, Tennessee

Counties

Alabama

Calhoun

Illinois

Monroe, Pike

Tennessee

Overton

Conservation and management

NatureServe

GNR Unranked

National ranks

United States

NNR

Canada

N4 Apparently Secure

Subnational ranks

Indiana

SNR Unranked

West Virginia

SNR Unranked

Manitoba

SU Unrankable

British Columbia

SU Unrankable

Ontario

S4 Apparently Secure

Quebec

SNR Unranked

State and federal status

Not listed under the U.S. Endangered Species Act

References

• Lewis, J.J., Moss, P., Tecic, D. & Nelson, M.E. 2003. A conservation focused inventory of subterranean invertebrates of the southwestern Illinois karst. Journal of Cave and Karst Studies 65: 9–21.
• Lewis, J.J. 2005. A biological inventory of caves of the Cumberland Plateau. Tennessee Chapter Cave Program, The Nature Conservancy, Nashville, Tennessee, USA. 156 pp.
• Peck, S.B. 1989. The cave fauna of Alabama. Part I. The terrestrial invertebrates (excluding insects). National Speleological Society Bulletin 51: 11–33.
• Webb, D.W., Taylor, S.J. & Krejca, J.K. 1993. The biological resources of Illinois caves and other subterranean environments. Illinois Natural History Survey, Champaign, Illinois, USA. 143 pp.

How to cite this account

Data sources and funding are listed in the Acknowledgments.

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