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

Spurred Ridgeback
Haplophthalmus danicus Budde-Lund in Meinert, 1880

Taxonomy

Kingdom Animalia
Phylum Arthropoda
Subphylum Crustacea
Class Malacostraca
Order Isopoda
Family Trichoniscidae
Genus Haplophthalmus
Species Haplophthalmus danicus Budde-Lund in Meinert, 1880

Description

Diagnostic characters

Ecological class
Troglophile
Realm
Terrestrial

Distribution

Range

Known from 17 counties across six states.

Continent

North America

Country

United States

States and provinces

Illinois, Indiana, Kentucky, New Mexico, Tennessee, Virginia

Counties

Illinois
Monroe
Indiana
Crawford
Kentucky
Barren, Edmonson, Hart, Pulaski
New Mexico
Eddy
Tennessee
Fentress, Franklin, Grundy, Knox, Marion, Montgomery, Warren
Virginia
Lee, Page, Rockingham

Conservation and management

State and federal status

Not listed under the U.S. Endangered Species Act

References

  • Banta, A.M. 1907. The fauna of Mayfield's Cave. Carnegie Institution of Washington Publication 67: 1–114. https://www.biodiversitylibrary.org/item/60987.
  • Barr, T.C. & Reddell, J.R. 1967. The arthropod cave fauna of the Carlsbad Caverns region, New Mexico. The Southwestern Naturalist 12: 253–273.
  • Barr, T.C., Jr. & Kuehne, R.A. 1971. Ecological studies in the Mammoth Cave system of Kentucky. II. The Ecosystem. Annales de Speleologie 26: 47–96. doi:10.5038/1827-806X.3.1.10
  • 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.
  • Lewis, J.J. & Lewis, S.L. 2007. A biological reconnaissance of selected caves in the Highland Rim area of central Tennessee. Tennessee Chapter Cave Program, The Nature Conservancy, Nashville, Tennessee, USA. 42 pp.
  • Lewis, J.J., Whitaker, J.O. & Krantz, G.W. 2010. A biological reconnaissance of the invertebrate fauna of twelve Tennessee caves with notes on the guanophilic mites of the genus Macrocheles. Journal of the Tennessee Academy of Science 85: 53–61.
  • Trumbore, L.E., Reynolds, R.J., Thomas, S.C., Orndorff, W., Cramphorn, B., Gladstone, N.S., Harden, C.W., Lewis, J.J., Milne, M.A., Ober, K.A., Shear, W.A., Stephen, C.D.R. & Zigler, K.S. 2024. Cave biodiversity of Cumberland Gap National Historical Park. Journal of Cave and Karst Studies 86: 13–24. doi:10.4311/2022LSC0116
  • Vandel, A. 1950. Isopodes terrestres recueillis par C. Bolivar et R. Jeannel (1928) et le Dr. Henrot (1946). Archives de Zoologie Experimentale et Generale 87: 183–210.
  • Vandel, A. 1965. Les Trichoniscidae cavernicoles (Isopoda Terrestria; Crustacea) de l'Amérique du Nord. Annales de Speleologie 20: 347–389.

How to cite this account

Haplophthalmus danicus Budde-Lund in Meinert, 1880. Cave Biology Data Portal, account SP-1749. https://cavebiology.org/species/haplophthalmus-danicus/ (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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