Innesoconcha miranda (Iredale, 1944)



Taxonomy & Nomenclature

Synonyms: Annacharis miranda Iredale, 1944 (protonym/basionym); Melloconcha miranda (Iredale, 1944)


Conservation Status

Missing; "probably extinct" (Hyman et al., 2022)

Last record: 9 November 1913 (Hyman et al., 2022)


"Innesoconcha miranda is known only from its holotype, which was collected from the summit of Mount Gower in 1914 [given as 1913/9 November 1913 elsewhere in the publication]. After > 100 years without a single observation, this species should be considered extinct...It is probable that this species is extinct. It might have been affected by the introduction of rats in 1918. Alternatively, I. miranda might already have been in decline when it was first described, possibly resulting from the introduction of mice, which were well established by 1870 (Etheridge, 1889)."

(Hyman et al., 2022)



summit of Mount Gower, Lord Howe Island, New South Wales, Australia


Biology & Ecology




Holotype: AM C.39175 (Hyman et al., 2022)






Original scientific description:

Iredale, Tom. (1944). The land Mollusca of Lord Howe Island. The Australian Zoologist 10(3): 299-334.


Other references:

Hyman Isabel T., Caiza, Jennifer and Köhler, Frank. (2022). Dissecting an island radiation: systematic revision of endemic land snails on Lord Howe Island (Gastropoda: Stylommatophora: Microcystidae). Zoological Journal of the Linnean Society.

Hyman Isabel T. and Köhler, Frank. (2020). A Field Guide to the Land Snails of Lord Howe Island. Australian Museum. 159 pp.

MolluscaBase eds. (2021). MolluscaBase. Melloconcha miranda (Iredale, 1944). Accessed at: on 2021-05-29

Smith, B. J. (1992). Non-marine Mollusca. In: Houston WWK, ed. Zoological catalogue of Australia, Vol. 8. Canberra: Australian Government Publishing Service, 1–408.


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