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Cave Biology Data Portal
Subterranean biodiversity of North America and around the globe
AnimaliaArthropodaCrustaceaMalacostracaIsopodaArmadillidiidaeArmadillidium

Nosy Pill Woodlouse
Armadillidium nasatum Budde-Lund, 1885

Taxonomy

Kingdom Animalia
Phylum Arthropoda
Subphylum Crustacea
Class Malacostraca
Order Isopoda
Family Armadillidiidae
Genus Armadillidium
Species Armadillidium nasatum Budde-Lund, 1885

Description

Diagnostic characters

Ecological class
Troglophile
Realm
Terrestrial

Distribution

Range

Known from eight counties across five states.

Continent

North America

Country

United States

States and provinces

Arkansas, Illinois, Kentucky, Oklahoma, Tennessee

Counties

Arkansas
Marion, Montgomery
Illinois
Monroe, Pike
Kentucky
Larue, Pulaski
Oklahoma
Delaware
Tennessee
Overton

Conservation and management

NatureServe

GNR Unranked

G1G2G3G4G5

National ranks

United States
NNA

State and federal status

Not listed under the U.S. Endangered Species Act

References

  • Fenolio, D.B., Niemiller, M.L., Slay, M.E. & Carter, E.T. 2018. Biological inventories of caves in the Ozarks of northeastern Oklahoma: December 2018 field report. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 25 pp.
  • Fenolio, D.B., Slay, M.E. & Niemiller, M.L. 2023. Biological inventories of caves in the Ozarks of northeastern Oklahoma: December 2023 field report. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 24 pp.
  • Graening, G.O., Slay, M.E., Fenolio, D.B. & Robison, H.W. 2007. Annotated checklist of the Isopoda (subphylum Crustacea: class Malacostraca) of Arkansas and Oklahoma, with emphasis upon subterranean habitats. Proceedings of the Oklahoma Academy of Science 87: 1–14. https://ojs.library.okstate.edu/osu/index.php/OAS/article/view/5834/5457.
  • 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. 2004. Interstate 66 karst faunal study. Environmental Impact Statement. 17 pp.
  • 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.
  • Niemiller, M.L., Maxwell, E. & Higgs, J.P. 2024. A biological inventory of Sinking Spring Cave at Abraham Lincoln Birthplace National Historical Park, Larue County, Kentucky, USA. U.S. National Park Service, Hodgenville, Kentucky, USA. 21 pp.
  • 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

Armadillidium nasatum Budde-Lund, 1885. Cave Biology Data Portal, account SP-2211. https://cavebiology.org/species/armadillidium-nasatum/ (accessed 7 September 2026).

Data sources and funding are listed in the Acknowledgments.

Spotted something wrong on this page? Report a correction. Accounts are compiled from many sources and corrections from people who know the group are the most useful email we get.

Cave Biology Data Portal

Species accounts, distributions, and conservation status for the subterranean fauna of North America and around the globe, with resources for the cave and karst research community.

Text and data CC BY 4.0. Images all rights reserved unless stated.

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