Leiostyla tesselata (Morelet, 1860)
Mosaic chrysalis-snail
Taxonomy & Nomenclature
Synonym/s: Pupa tesselata Morelet, 1860
Conservation Status
Missing (de Frias Martins et al., 2025)
Last record: 1996 (de Frias Martins et al., 2025)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution & Habitat
Santa Maria, Azores, Macaronesia
Anatomy & Morphology
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Morelet, A. (1860). Iles Açores. Notice sur l'histoire naturelle des Açores suivi d'une description des mollusques terrestres de cet archipel. Baillère et fils, Paris. 1-214 [+ 2], 5 pls.
Other references:
Backhuys, W. (1975). Land and Fresh-water Molluscs of the Azores. Backhuys & Meesters, Amsterdam.
de Frias Martins, A. M. (2011). Leiostyla tesselata (errata version published in 2025). The IUCN Red List of Threatened Species 2011: e.T170897A277176350. Accessed on 10 August 2026.
de Frias Martins, A. M., Cameron, R. and Teixeira, D. (2025). Leiostyla tesselata. The IUCN Red List of Threatened Species 2025: e.T170897A220270153. https://dx.doi.org/10.2305/IUCN.UK.2025-2.RLTS.T170897A220270153.en. Accessed on 08 August 2026.
Drouët, H. (1861). Elements de la faune Açoréens. J.-B. Baillière, París.
Martins, A. M. F. (2021). Mollusca. In: Vieira, V., Borges, P.A.V. and Frias Martins, A.M (eds), Terrestrial Fauna of the Azores - A Field Guide, pp. 272. Letras Lavadas Edições, Ponta Delgada.
Martins, A. M. F. (2023). Revision of the Lauriidae Steenberg, 1925 (Gastropoda: Stylommatophora: Pupilloidea) on the Azores Islands, with the description of seven new species. Açoreana 11(4): 673-750.
Martins, A. M. F., Backeljau, T., da Cunha, R. M. T. and Brito, C. P. (1991). Moluscos terrestres da Ilha de Santa Maria. Lista preliminar. Relatórios e Comunicações do Departamento de Biologia. Santa Maria e Formigas 19: 53-59.
Martins, A. M. F., Henriques, D. V. and Cameron, R. A. D. (2023). The Azores endemic snails are disappearing! Whose is to blame? Açoreana 11(4): 653-672.
MolluscaBase eds. (2026). MolluscaBase. Leiostyla tesselata (Morelet, 1860). Accessed at: https://molluscabase.org/aphia.php?p=taxdetails&id=1050345 on 2026-07-18