Caseolus galeatus (R. T. Lowe, 1862)
Taxonomy & Nomenclature
Synonym/s: Helix calva galeata R. T. Lowe, 1862 (original combination); Caseolus calvus galeatus (R. T. Lowe, 1862); Lemniscia galeata (Lowe, 1862)
Conservation Status
Missing (Teixeira, 2025) or Extinct (WCMC, 1992:208)
Last record: 1867 or before (Paiva, 1867; Teixeira, 2025); 1870's (WCMC, 1992:208)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution & Habitat
Deserta Grande (Desertas Islands) & Madeira, both Madeiran Archipelago
Biology & Ecology
Hypodigm
Media
References
Bank, R. A., Groh, K. and Ripken, T. E. (2002). Catalogue and Bibliography of the non-marine Mollusca of Macronesia, pp. 89-235. In: Falkner, M., Grah, K. and Speight, M. C. D. (eds.). Collecteana Malacologica. 10 + 550 + 96 pp., 83 Text–Figs, 14 Tab., 23 Maps, 20 b/w Text–Pls, 48 col. pls
Cameron, Robert A. D., Teixeira, Dinarte, Pokryszko, Beata, Silva, Isamberto and Groh, Klaus. (2021). An annotated checklist of the extant and Quaternary land molluscs of the Desertas Islands, Madeiran Archipelago. Journal of Conchology 44(1): 53-70.
Cook, L. M., Goodfriend, G. A. and Cameron, R. A. D. (1993). Changes in the land snail fauna of eastern Madeira during the Quaternary. Philosophical Transactions of the Royal Society, London series B 339(1287): 83-103.
Cuttelod, A., Seddon, M. and Neubert, E. (2011). European Red List of Non-marine Molluscs. Publications Office of the European Union, Luxembourg.
Fontaine, B., Bouchet, P., Van Achterberg, K., Alonso-Zarazaga, M.A., Araujo, R., Asche, M., Aspöck, U. Audisio, P., Aukema, B., Bailly, N., Balsamo, M., Bank, R.A., Barnard, P., Belfiore, C., Bogdanowicz, W., Bongers, T., Boxshall, G., Burckhardt, D., Camicas, J.-L., Chylarecki, P., Crucitti, P., Deharveng,L., Dubois, A., Enghoff, H., Faubel, A., Fochetti, R., Gargominy, O., Gibson, D., Gibson, R., Soledad Gómez López, M., Goujet, D., Harvey, M.S., Heller, K.-G., Van Helsdingen, P., Hoch, H., De Jong, H., De Jong, Y., Karsholt, O., Los, W., Lundqvist, L., Magowski, W., Manconi, R., Martens, J. Massard, J.A., Massard-Geimer, G., Mcinnes, S.J., Mendes, L.F., Mey, E., Michelsen, V., Minelli, A., Nielsen, C., Nieto Nafría, J.M., Van Nieukerken, E.J., Noyes, J., Pape, T., Pohl, H., De Prins, W., Ramos, M., Ricci, C., Roselaar, C., Rota, E., Schmidt-Rhaesa, A., Segers, H., Zur Strassen, R., Szeptycki, A., Thibaud, J.-M., Thomas, A., Timm, T., Van Tol, J., Vervoort, W. and Willmann, R. (2007). The European Union’s 2010 target: Putting rare species in focus. Biological Conservation 139(1-2): 167-185. http://dx.doi.org/10.1016/j.biocon.2007.06.012
Mollusc Specialist Group. (2000). Caseolus galeatus [as Lemniscia galeata]. The IUCN Red List of Threatened Species 2000: e.T11484A3283766. Accessed on 09 August 2026.
MolluscaBase eds. (2021). MolluscaBase. Caseolus galeatus (R. T. Lowe, 1862). Accessed at: http://www.molluscabase.org/aphia.php?p=taxdetails&id=1502391 on 2022-03-07
Paiva, C. de. (1867). Monographia Molluscorum terrestrium fluvialium, lacustrium insularum Maderensium. Memorias da Academia Real de Lisboa, Cl. Sci. math. phys. nat. 4(1): 1-168 pl. 1-2.
Pilsbry, H. A. (1893). Manual of Conchology (Second series: Pulmonata). Philadelphia.
Seddon, M. B. (2008). The landsnails of Madeira. An illustrated compendium of the landsnails and slugs of the Madeiran archipelago. Studies in Biodiversity and Systematics of Terrestrial Organisms from the National Museum of Wales. Biotir Reports 2: 1-204.
Seddon, M. B. (2011). Lemniscia galeata. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. (http://www.iucnredlist.org). Downloaded on 17 July 2013.
Teixeira, D. (2025). Caseolus galeatus. The IUCN Red List of Threatened Species 2025: e.T11484A220122255. https://dx.doi.org/10.2305/IUCN.UK.2025-2.RLTS.T11484A220122255.en. Accessed on 08 August 2026.
WCMC (World Conservation Monitoring Centre). (1992). Global Biodiversity: Status of the Earth's living resources. London: Chapman & Hall. xx + 594 pp.
Wollaston, T. V. (1878). Testacea Atlantica or the land and freshwater shells of Azores, Madeiras, Salvages, Canaries, Cape Verdes, and Saint Helena. London: L. Reeve & Company.