Naesiotus achatellinus (Forbes, 1850)



Taxonomy & Nomenclature

Synonym/s: Bulimulus achatellinus Forbes, 1850 (original combination)


Conservation Status


Last record: 1983 or before

IUCN RedList status: Critically Endangered (Possibly Extinct)



San Cristobal, Galápagos Islands, Ecuador


Biology & Ecology




Holotype: NHMUK 1855.4.5.25



BMNH 1850.4.23.12 (Breure & Coppois, 1978:165)

BMNH 1850.4.23.13 (Breure & Coppois, 1978:165)

BMNH 1855.4.5.25 (Breure & Coppois, 1978:165)






Original scientific description:

Forbes, E. (1850). On the species of mollusca collected during the surveying voyages of the Herald and Pandora, by Capt. Kellett, R.N., C.B., and Lieut. Wood, R.N. Proceedings of the Zoological Society of London: 53-56.


Other references:

Breure, Abraham S. H. and Ablett, J. (2014). Annotated type catalogue of the Bulimulidae (Mollusca, Gastropoda, Orthalicoidea) in the Natural History Museum, London. ZooKeys 392: 1-367.

Breure, Abraham S. H. and Borrero, F. J. (2008). An annotated checklist of the land snail family Orthalicidae (Gastropoda: Pulmonata: Orthalicoidea) in Ecuador, with notes on the distribution of the mainland species. Zootaxa 1768: 1-40.

Breure, Abraham S. H. and Coppois, Guy. (1978). Notes On the Genus Naesiotus Albers, 1850 (Mollusca, Gastropoda, Bulimulidae). Netherlands Journal of Zoology 28(2): 161-192.

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.

Dall, W. H. (1896). Insular land-shell faunas, especially as illustrated by the data obtained by Dr. G. Baur in the Galapagos Islands. Proceedings of the Academy of Natural Sciences of Philadelphia [1896]: 395-460.

IUCN. (2003). 2003 IUCN Red List of Threatened Species. Downloaded on 18 November 2003.

Köhler, F. (2007). Annotated type catalogue of the Bulimulinae (Pulmonata, Orthalicoidea, Bulimulidae) in the Museum für Naturkunde Berlin. Mitteilungen aus dem Museum für Naturkunde in Berlin – Zoologische Reihe 83(2): 125-159.

MolluscaBase eds. (2021). MolluscaBase. Naesiotus achatellinus (Forbes, 1850). Accessed at: on 2022-03-31

Parent, Christine. (2003). Bulimulus achatellinus. The IUCN Red List of Threatened Species 2003: e.T43983A10836398. Downloaded on 14 May 2018.

Parent, Christine and Coppois, Guy. (2009). On the Snails’ Trail: Evolution and Speciation Among a Vanishing Tribe, pp. 74-81. In: De Roy, T. (ed.). Galápagos: Preserving Darwin’s Legacy. Richmond Hill, Ontario: Firefly Books.

Siberglied, R. (1972). The little fire ant Wasmannia auropunctata, a serious pest in the Galapagos Islands. Noticias de Galápagos 19-20: 13-15.


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