Jackson County Cave Amphipod
Crangonyx manubrium Cannizzaro & Sawicki in Cannizzaro, Balding, Lazo-Wasem & Sawicki, 2019
Taxonomy
| Kingdom | Animalia |
|---|---|
| Phylum | Arthropoda |
| Subphylum | Crustacea |
| Class | Malacostraca |
| Order | Amphipoda |
| Family | Crangonyctidae |
| Genus | Crangonyx |
| Species | Crangonyx manubrium Cannizzaro & Sawicki in Cannizzaro, Balding, Lazo-Wasem & Sawicki, 2019 |
Description
Diagnostic characters
- Ecological class
- Stygobiont
- Realm
- Aquatic
- Troglomorphy
- Troglomorphic
Distribution
Range
Known from two counties in Florida in the Florida Lime Sinks karst region.
Continent
North America
Country
United States
States and provinces
Florida
Counties
- Florida
- Jackson, Jackson Co. (FL)
Karst regions
Florida Lime Sinks
Genetics
Molecular resources
| Marker | Molecule | Sequences | Length | Exemplar |
|---|---|---|---|---|
| 18S | nuclear | 61 | 303-2198 bp | PQ522353.1 |
| 28S | nuclear | 61 | 305-859 bp | MK020445.1 |
| COI | mitochondrial | 1 | 577-577 bp | MN443949.1 |
123 sequences, retrieved 23 August 2026. Counts change as sequences are deposited. Search GenBank.
Download all 123 sequence records (CSV) Accession, marker, molecule type, length, GenBank definition and a direct link.
Specimens
Type material
- Holotype
- YPM IZ 104727 · Yale Peabody Museum
- Allotype
- YPM IZ 104728 · Yale Peabody Museum
- Paratype ×17
- Canadian Museum of Nature
- Paratype ×2
- Yale Peabody Museum
- Type ×4
- Yale Peabody Museum
Collections holding material
| Institution | Lots |
|---|---|
| Canadian Museum of Nature | 21 |
| Yale Peabody Museum | 8 |
| National Museum of Natural History, Smithsonian Institution | 3 |
32 cataloged lots in 3 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 32 specimen records (CSV) Institution, catalog number, type status and preparation. No coordinates.
Conservation and management
NatureServe
G1G2 Critically Imperiled to Imperiled
Global rank last reviewed 2 October 2019.
Subnational ranks
- Florida
- 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
References
- Cannizzaro, A.G., Balding, D., Lazo-Wasem, E.A. & Sawicki, T.R. 2019a. Morphological and molecular analyses reveal a new species of stygobitic amphipod in the genus Crangonyx (Crustacea: Crangonyctidae) from Jackson County, Florida, with a redescription of Crangonyx floridanus and notes on its taxonomy and biogeography. Journal of Natural History 53: 425–473. doi:10.1080/00222933.2019.1584341
- Cannizzaro, A.G., Balding, D., Lazo-Wasem, E.A. & Sawicki, T.R. 2020. A new species rises from beneath Florida: molecular phylogenetic analyses reveal cryptic diversity among the metapopulation of Crangonyx hobbsi Shoemaker, 1941 (Amphipoda: Crangonyctidae). Organisms Diversity & Evolution 20: 387–404. doi:10.1007/s13127-020-00433-4
- Cannizzaro, A.G., Balding, D., Stine, M. & Sawicki, T.R. 2019b. A new syntopic species of Stygobromus Cope, 1872 (Amphipoda: Crangonyctidae) from groundwaters in Georgia and Florida, USA, with notes on S. floridanus Holsinger & Sawicki, 2016. Journal of Crustacean Biology 39: 407–418. doi:10.1093/jcbiol/ruz034
- Poucher, S. 2022. Wildlife of Florida's Springs. An Illustrated Guide to over 150 Species. Pineapple Press, Palm Beach, Florida, USA. 196 pp. ISBN 9780000000000.
- Sisco, J.M. & Sawicki, T.R. 2023. Molecular and morphological analyses reveal a new hypogean species of amphipod in the genus Crangonyx Bate, 1859 (Crustacea: Crangonyctidae) within the floridanus species complex, from Suwannee County, Florida. Journal of Natural History 57: 21–24. doi:10.1080/00222933.2023.2247155
This account was last revised 28 August 2026. Conservation ranks were looked up 23 August 2026.
How to cite this account
Data sources and funding are listed in the Acknowledgments.
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