Caseolus bowdichianus (Férussac, 1832)
Taxonomy & Nomenclature
Synonyms: Helix (Helicogena) bowdichiana A. Férussac, 1832; Helicomela bowdichiana (Férussac, 1832); Helicomela bowdichiana (Férussac, 1819) [incorrect year]; Helix vargasiana L. Pfeiffer, 1849
Conservation Status
Extinct (Fernández-Palacios et al., 2025; MolluscaBase eds., 2025)
Last record: 1550-1580 AD (Fernández-Palacios et al., 2025)
Distribution & Habitat
Deserta Grande (Desertas Islands), Madeira & Porto Santo, all Madeiran Archipelago
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Férussac, A. E. J. P. F. d'Audebard de. (1819-1832). Histoire naturelle générale et particulière des mollusques terrestres et fluviatiles tant des espèces que l'on trouve aujourd'hui vivantes, que des dépouilles fossiles de celles qui n'existent plus; classés d'après les caractères essentiels que présentent ces animaux et leurs coquilles. J.-B. Bailliere, Paris. Tome deuxième, première partie. Livraison 1: [3 pp. = dedication], i-xvi (= Préface) (6-III-1819); livr. 2: 1-16 (5-VI-1819); livr. 3: 17-56 (10-VII-1819); livr. 4: 57-72 (18-IX-1819); livr. 5: 73-96 (4-XII-1819); livr. 7: 97-128 (17-VI-1820); livr. 9: xvi pp. (= Explication des planches du premier volume) (6-IV-1821); livr. 17: v pp. (= Explication des planches supplémentaires et de celles qui ne font pas partie du premier volume) (2-XI-1822); livr. 19/21: 96a-z, 96α-λ (27-IX-1823); livr. 22/27: iv pp. (= Explication des planches des livraisons XXII, XXIII, XXIV, XXV, XXVI et XXVII) (4-VIII-1832). – Paris (J.-B. Baillière). Note: continued by G.-P. Deshayes (1839-1851). Explication des planches not included in BHL copy.
Other references:
Brozzo, Alissa et al. (2020). Molecular phylogeny and trait evolution of Madeiran land snails: radiation of the Geomitrini (Stylommatophora: Helicoidea: Geomitridae). Cladistics 36: 594-616.
Cameron, Robert A. D., Cook, Laurence, M., Goodfriend, Glenn A. and Seddon, Mary B. (2006). Fossil land snail faunas of Porto Santo, Madeiran Archipelago: change and stasis in Pleistocene to recent times. Malacologia 49(1): 25-59. http://dx.doi.org/10.4002/1543-8120-49.1.25
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.
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)]
Goodfriend, Glenn A., Cameron, R. A. D. and Cook, L. M. (1994). Fossil evidence of recent human impact on the land snail fauna of Madeira. Journal of Biogeography 21(3): 309320. https://doi.org/10.2307/2845532
MolluscaBase eds. (2022). MolluscaBase. Caseolus bowdichianus (A. Férussac, 1832) †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1055996 on 2022-03-05
MolluscaBase eds. (2025). MolluscaBase. Helicomela bowdichiana (A. Férussac, 1832) †. Accessed at: https://molluscabase.org/aphia.php?p=taxdetails&id=1502384 on 2025-09-12
Pfeiffer, L. (1849). Nachträge zu L. Pfeiffer Monographia Heliceorum. Zeitschrift für Malakozoologie. Cassel (Theodor Fischer). 6 (4): 66-79 [30 November 1849]; 6 (6): 81-95 [30 November 1849]; 6 (7): 106-112 [31 Dezember 1849].
Seddon, M. B. (2008). The landsnails of Madeira. The illustrated compendium of the landsnails and slugs of the Madeiran archipelago. Biotir Reports [Studies in biodiversity and systematics of terrestrial organisms], 2: i-viii, 1-196. [p. 67]
Teixeira, Dinarte, Pokryszko, B. M., Cameron, Robert A. D., Silva, Isamberto and Groh, Klaus. (2019). Taxonomic revision of the late-Pleistocene/Holocene land-mollusc fauna (Gastropoda: Eupulmonata) of the Desertas Islands, Madeiran Archipelago, with the description of 6 new species and 2 new subspecies. Archiv für Molluskenkunde 148(2): 137-159. https://doi.org/10.1127/arch.moll/148/137-159
Waldén, Henrik W. (1983). Systematic and biogeographical studies of the terrestrial Gastropoda of Madeira. With an annotated Check-list. Annales Zoologica Fennica 20: 255-275.