Innesoconcha segna Iredale, 1944

Pale glass-snail



Taxonomy & Nomenclature



Conservation Status

Missing (Hyman & Köhler, 2020); "probably extinct" (Hyman et al., 2022)

Last record: 1888 (Hyman et al., 2022)


"Two of these 11 species, Innesoconcha miranda and I. segna, are considered extinct because they have not been found in the last seven decades or during thorough surveys conducted by us since 2018...It has only ever been observed in extremely low numbers, with two live specimens collected in 1888, three shells in 1912 and eight shells in 2002."

(Hyman et al., 2022)



Lord Howe Island, New South Wales, Australia


"This species is known only from the type locality, Boat Harbour and nearby Rocky Run Creek"

(Hyman et al., 2022)


Biology & Ecology

"No habitat data are known, but it is likely to be arboreal, as are most of its congeners."

(Hyman et al., 2022) 



A total of 13 speciemns are known (Hyman et al., 2022).


Holotype/possibly holotype: AM C.114789 (Hyman et al., 2022)


Other specimens:

AM C.390873

AM C.390876






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.

Köhler, Frank and Hyman, Isabel. (2018). The Australian Museum Lord Howe Island Expedition 2017—land snail fauna. Technical Reports of the Australian Museum, Online 26: 45-51.

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


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