Pernastela howensis

Pernastela howensis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Family:	Punctidae
Genus:	Pernastela
Species:	P. howensis
Binomial name
	Pernastela howensis; Iredale, 1944
	Location of Lord Howe Island

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

Description

The trochoidal shell of the mature snail is 1.8–2.1 mm in height, with a diameter of 3–3.3 mm, and a raised spire. It is cream to pale golden-brown in colour. The whorls are shouldered and sutures impressed, with widely spaced radial ribs. It has an roundly lunate aperture, flattened on the upper side by the reflected lip, and a moderately wide umbilicus. The animal is unknown.^[2]

Distribution and habitat

The snail is known only from three worn shells collected from the summit of Mount Gower in 1912, and 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). "Pernastela howensis Iredale, 1944". MolluscaBase. Flanders Marine Institute. Retrieved 2021-08-16. {{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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