Tight Coil
Helicodiscus notius Hubricht, 1962
Taxonomy
| Kingdom | Animalia |
|---|---|
| Phylum | Mollusca |
| Class | Gastropoda |
| Order | Stylommatophora |
| Family | Helicodiscidae |
| Genus | Helicodiscus |
| Species | Helicodiscus notius Hubricht, 1962 |
Synonyms
- Helicodiscus notius specus Hubricht, 1962 (subjective synonym, CoL)
Description
Diagnostic characters
- Ecological class
- Troglophile
- Realm
- Terrestrial
Distribution
Range
Known from 20 counties across six states.
Continent
North America
Country
United States
States and provinces
Alabama, Georgia, Illinois, Kentucky, Missouri, Tennessee
Counties
- Alabama
- Blount, DeKalb
- Georgia
- Grady
- Illinois
- Monroe
- Kentucky
- Barren, Edmonson, Hart
- Missouri
- Camden, Dade, Lawrence, Miller, Pettis, St. Louis, Washington
- Tennessee
- DeKalb, Franklin, Grundy, Roane, Sullivan, Warren
Conservation and management
NatureServe
G5 Secure
Global rank last reviewed 8 October 2002.
Subnational ranks
- Alabama
- SNR Unranked
- Arkansas
- SNR Unranked
- Florida
- SNR Unranked
- Georgia
- SNR Unranked
- Illinois
- SNR Unranked
- Indiana
- SNR Unranked
- Kansas
- SNR Unranked
- Kentucky
- S3 Vulnerable
- Louisiana
- SNR Unranked
- Maryland
- SNR Unranked
- Missouri
- SNR Unranked
- Mississippi
- SNR Unranked
- North Carolina
- S5 Secure
- Oklahoma
- SNR Unranked
- South Carolina
- SNR Unranked
- Tennessee
- S5 Secure
- Texas
- SU Unrankable
- Virginia
- S4 Apparently Secure
- West Virginia
- S5 Secure
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.
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
- Gladstone, N.S., Carter, E.T., McKinney, M.L. & Niemiller, M.L. 2018a. Status and distribution of the cave-obligate land snails in the Appalachians and Interior Low Plateau of the eastern United States. American Malacological Bulletin 36: 62–78.
- Hubricht, L. 1962. New species of Helicodiscus from the eastern United States. The Nautilus 75: 102–107. https://www.biodiversitylibrary.org/page/8283022. details
- Hubricht, L. 1964. Land snails from the caves of Kentucky, Tennessee and Alabama. National Speleological Society Bulletin 26: 33–36.
- Hubricht, L. 1973. The land snails of Tennessee. Sterkiana 49: 11–17.
- Lewis, J.J. 2005a. A biological inventory of caves of the Cumberland Plateau. Tennessee Chapter Cave Program, The Nature Conservancy, Nashville, Tennessee, USA. 156 pp.
- 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.
- Niemiller, M.L. & Zigler, K.S. 2013. Patterns of cave biodiversity and endemism in the Appalachians and Interior Plateau of Tennessee, USA. PLOS One 8: e64177. doi:10.1371/journal.pone.0064177
- Niemiller, M.L., Zigler, K.S., Hinkle, A., Stephen, C.D.R., Cramphorn, B., Higgs, J., Mann, N., Miller, B.T., Niemiller, K.D.K., Smallwood, K. & Hardy, J. 2023b. The Crystal-Wonder Cave System: a new hotspot of subterranean biodiversity in the southern Cumberland Plateau of south-central Tennessee, USA. Diversity 15: 801. doi:10.3390/d15070801
- Peck, S.B. 1989. The cave fauna of Alabama. Part I. The terrestrial invertebrates (excluding insects). National Speleological Society Bulletin 51: 11–33.
- 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
This account was last revised 6 September 2026. Conservation ranks were looked up 23 August 2026.
How to cite this account
Helicodiscus notius Hubricht, 1962. Cave Biology Data Portal, account SP-1447. https://cavebiology.org/species/helicodiscus-notius/ (accessed 22 October 2026).
Data sources and funding are listed in the Acknowledgments.
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