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

Buchanan's Cave Flatworm
Sphalloplana buchanani (Hyman, 1937)

Taxonomy

Kingdom Animalia
Phylum Platyhelminthes
Class Turbellaria
Order Tricladida
Family Kenkiidae
Genus Sphalloplana
Species Sphalloplana buchanani (Hyman, 1937)

Synonyms

  • Speophila buchanani Hyman, 1937 (prior combination, CoL)

Description

Diagnostic characters

Ecological class
Stygobiont
Realm
Aquatic
Troglomorphy
Troglomorphic
Maximum length
15 mm

Distribution

Type locality

Mammoth Cave, Edmonson Co. KY

Range

Known from two counties across three states across two karst regions.

Continent

North America

Country

United States

States and provinces

Kentucky, Maryland, Tennessee

Counties

Kentucky
Edmonson
Tennessee
Davidson

Karst regions

Appalachians, Interior Low Plateau

Specimens

Collections holding material

InstitutionLots
Naturalis Biodiversity Center 8
Yale Peabody Museum 2

10 cataloged lots in 2 collections. Compiled from GBIF and not an exhaustive census: many collections are not yet digitised, and holdings are added continually. Search GBIF for specimen records.

Download all 10 specimen records (CSV) Institution, catalog number, type status and preparation. No coordinates.

Conservation and management

NatureServe

G1G2 Critically Imperiled to Imperiled

G1▲G2▲G3G4G5

Global rank last reviewed 21 August 2002.

Subnational ranks

Kentucky
S1S2 Critically Imperiled to Imperiled
Maryland
SNR Unranked
Tennessee
S1 Critically Imperiled

Ranks looked up 23 August 2026. Conservation status changes, and a rank here is as current as that date and no more.

State and federal status

Not listed under the U.S. Endangered Species Act.

Other resources

Catalogue of Life
4YTTJ
GBIF
2502915
ITIS
54518
iNaturalist
171593

References

  • 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
  • Carpenter, J.H. 1970a. Systematics and ecology of cave planarians of the United States. University of Kentucky, Lexington, Kentucky, USA. 213 pp.
  • Harker, D.F., Jr. & Barr, T.C., Jr. 1980. Caves and associated fauna of the Western Kentucky coal field, Volume 2. Kentucky Nature Preserves Commission, Frankfurt, Kentucky, USA. 114 pp.
  • Kenk, R. 1977a. Freshwater tricads (Turbellaria) of North America, IX: The genus Sphalloplana. Smithsonian Contributions to Zoology 246: 1–38. https://repository.si.edu/bitstreams/d38e70a7-fb46–474c-9ea0-f202898980ba/download. details
  • Lewis, J.J. 1988. The systematics, zoogeography and life history of the troglobitic isopods of the Interior Plateaus of the eastern United States. University of Louisville, Louisville, Kentucky, USA. 281 pp.
  • Nicholas, G. 1960. Checklist of macroscopic troglobitic organisms of the United States. The American Midland Naturalist 64: 123–160. doi:10.2307/2422897

This account was last revised 28 August 2026. Conservation ranks were looked up 23 August 2026.

How to cite this account

Sphalloplana buchanani (Hyman, 1937). Cave Biology Data Portal, account SP-1419. https://cavebiology.org/species/sphalloplana-buchanani/ (accessed 18 October 2026).
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Data sources and funding are listed in the Acknowledgments.

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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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