Leptaxis simia hyaena (Lowe, 1852)



Taxonomy & Nomenclature

Synonym/s: Helix hyaena R. T. Lowe, 1852 (original combination)


Conservation Status

Rediscovered (see below for justification)


Listed as extinct by (Fontaine et al., 2007), but living individuals have recently been found on Bugio and Deserta Grande (Cameron et al., 2021), with the species "flourishing" on both islands (Dinarte Teixeira, pers. comm. 19 May 2022).



Bugio & Deserta Grande, both Desertas Islands, Madeiran Archipelago


Biology & Ecology










Original scientific description:

Lowe, R. T. (1852). Brief diagnostic notices of new Maderan land shells. The Annals and Magazine of Natural History. (2) 9 (50): 112-120; (2) 9 (52): 275-279.

Other references:

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.

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.

MolluscaBase eds. (2021). MolluscaBase. Leptaxis simia hyaena (R. T. Lowe, 1852). Accessed at: on 2022-03-07


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