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Subterranean biodiversity of North America and around the globe

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

Common Pill Woodlouse
Armadillidium vulgare (Latreille, 1804)

Taxonomy

Kingdom Animalia
Phylum Arthropoda
Subphylum Crustacea
Class Malacostraca
Order Isopoda
Family Armadillidiidae
Genus Armadillidium
Species Armadillidium vulgare (Latreille, 1804)

Description

Diagnostic characters

Ecological class
Troglophile
Realm
Terrestrial

Distribution

Range

Known from seven counties across six states.

Continent

North America

Country

United States

States and provinces

Alabama, Arkansas, Georgia, Illinois, Missouri, Tennessee

Counties

Alabama
Madison
Arkansas
Marion, Searcy
Georgia
Walker
Illinois
Hardin
Missouri
Perry
Tennessee
Van Buren

Conservation and management

NatureServe

GNR Unranked

G1G2G3G4G5

National ranks

Canada
NNA
United States
NNA

Subnational ranks

Saskatchewan
SNA Not Applicable
British Columbia
SNA Not Applicable
Tennessee
SNA Not Applicable
Wyoming
SNA Not Applicable
Missouri
SNA Not Applicable
Montana
SNA Not Applicable
Minnesota
SNA Not Applicable
Illinois
SNA Not Applicable

State and federal status

Not listed under the U.S. Endangered Species Act

References

  • 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.
  • Lawson, K.M., Schotz, A.R., Jenkins, A.J., Armbruster, J.W., Black, C., Callahan, M., Goertzen, L., Hansen, C., Stephen, C.D.R., Werneke, D., Mendonca, M. & Molina, E. 2021. Planning level survey of Redstone Arsenal for at-risk species and ecologically significant communities. Environmental Management Division, U.S. Army Garrison, Redstone Arsenal, Huntsville, Alabama, USA. 402 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.
  • Peck, S.B. & Lewis, J.J. 1978. Zoogeography and evolution of the subterranean invertebrate faunas of Illinois and southeastern Missouri. National Speleological Society Bulletin 40: 39–63.
  • Schultz, G.A. 1970. Descriptions of new subspecies of Ligidium elrodii (Packard) comb. nov. with notes on other isopod crustaceans from caves in North America (Oniscoidea). The American Midland Naturalist 84: 36–45. doi:10.2307/2423724
  • 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.
  • Zigler, K.S., Niemiller, M.L., Stephen, C.D.R., Ayala, B.N., Milne, M.A., Gladstone, N.S., Engel, A.S., Jensen, J.B., Camp, C.D., Ozier, J.C. & Cressler, A. 2020. Biodiversity from caves and other subterranean habitats of Georgia, USA. Journal of Cave and Karst Studies 82: 125–167. doi:10.4311/2019LSC0125

How to cite this account

Armadillidium vulgare (Latreille, 1804). Cave Biology Data Portal, account SP-2212. https://cavebiology.org/species/armadillidium-vulgare/ (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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