Charopinesta sema

Charopinesta sema
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Family:	Punctidae
Genus:	Charopinesta
Species:	C. sema
Binomial name
	Charopinesta sema; (Iredale, 1944)
	Location of Lord Howe Island

Charopinesta sema, also known as the Blackburn Island pinhead snail, is a species of land snail that is endemic to Australia's Lord Howe Island group in the Tasman Sea.^[2]

Description

The depressedly turbinate to discoidal shell of the mature snail is 1.1 mm in height, with a diameter of 1.8 mm, and a low, stepped spire. It is pale golden in colour. The whorls are rounded, with deeply impressed sutures and moderately spaced radial ribs. It has a roundedly lunate aperture and widely open umbilicus. ^[2]

Distribution and habitat

This extremely rare snail is known from a single empty shell from Blackburn Island. It may be extinct.^[2]

References

^ Iredale, Tom (1944). "The land Mollusca of Lord Howe Island". Australian Zoologist. 10 (3): 299–334.
^ ^a ^b ^c Hyman, Isabel; Köhler, Frank (2020). A Field Guide to the Land Snails of Lord Howe Island. Sydney: Australian Museum. ISBN 978-0-9750476-8-2.

MolluscaBase eds (2021). "Charopinesta sema Iredale, 1944". MolluscaBase. Flanders Marine Institute. Retrieved 2021-08-12. {{cite web}}: |author= has generic name (help)

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[iredale44-1] Iredale, Tom (1944). "The land Mollusca of Lord Howe Island". Australian Zoologist. 10 (3): 299–334.

[h&k-2] Hyman, Isabel; Köhler, Frank (2020). A Field Guide to the Land Snails of Lord Howe Island. Sydney: Australian Museum. ISBN 978-0-9750476-8-2.

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