Leiostyla cassida (Lowe, 1831)
Taxonomy & Nomenclature
Synonyms: Helix cassida R. T. Lowe, 1831; Scarabella cassida (R. T. Lowe, 1831)
Conservation Status
Missing or Extinct (WCMC, 1992:207)
Last record: 1870; 1870's (WCMC, 1992:207)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution & Habitat
Madeira
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Lowe, R. T. (1831). Primitiae faunae et florae Maderae et Portus Sancti; sive species quaedam novae vel hactenus minus rite cognitae animalium et plantarum in his insulis degentium breviter descriptae. Transactions of the Cambridge Philosophical Society 4(1): 1-70, pl. 1-6.
Other references:
Borges, P. A. V., et al. (eds.). (2008). Listagem dos fungos, flora e fauna terrestres dos arquipélagos da Madeira e Selvagens. Governo da Madeira, Funchal.
Cowie, Robert H., Régnier, Claire, Fontaine, Benoît, and Bouchet, Philippe. (2017). Measuring the Sixth Extinction: what do mollusks tell us? The Nautilus 131(1): 3-41.
Cuttelod, A., Seddon, M. and Neubert, E. (2011). European Red List of Non-marine Molluscs. Publications Office of the European Union, Luxembourg.
Fernández-Palacios, José María, Fructuoso, Melania, Illera, Juan Carlos, Rando, Juan Carlos, de Nascimento, Lea, Fernández-Palacios, Enrique, Patiño, Jairo, Otto, Rüdiger, Castilla-Beltrán, Álvaro, González, Esther Martín, Orihuela-Rivero, Raúl, Alcover, Josep Antoni, Whittaker, Robert J. (2025). A synthesis of terrestrial species extinctions in the Macaronesian Islands and their correspondence with human occupancy. PNAS Nexus 4(8): pgaf215. https://doi.org/10.1093/pnasnexus/pgaf215 [Supplementary data (.docx)]
MolluscaBase eds. (2026). MolluscaBase. Leiostyla cassida (R. T. Lowe, 1831). Accessed at: https://molluscabase.org/aphia.php?p=taxdetails&id=1050378 on 2026-02-19
Seddon, M. B. (2008). An illustrated compendium ofthe landsnails and slugs of the Madeiran archipelago. Studies in Biodiversity and Systematics of Terrestrial Organisms from the National Museum of Wales. Biotir Reports.
Seddon, M. B. (2013). Leiostyla cassida. The IUCN Red List of Threatened Species. Version 2014.3. (http://www.iucnredlist.org). Downloaded on 11 January 2015.
Walden, H. W. (1983). Systematic and biogeographical studies of the terrestrial Gastropoda of Madeira. With an annotated Check-list. Annales Zoologica Fennica 20: 255-275.
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, aderiras, Salvages, Canaries, Cape Verdes and Saint Helena. London; Reeve.
https://extinctanimals.proboards.com/thread/10771/leiostyla-cassida