Allenella planorum

Allenella planorum
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Heterobranchia
Order:	Stylommatophora
Family:	Punctidae
Genus:	Allenella
Species:	A. planorum
Binomial name
	Allenella planorum; (Iredale, 1944)[1]
	Location of Lord Howe Island
Synonyms
	Allentula planorum (Iredale, 1944); Allenella formalis planorum Iredale, 1944;

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

Description

The turbinate shell of the mature snail is 2.3 mm in height, with a diameter of 3.4 mm, and a low conical spire. It is amber to light bronze in colour. The whorls are rounded above and below an angular periphery, with impressed sutures and closely spaced radial ribs. It has an ovately lunate aperture and narrowly open umbilicus.[2]

Distribution and habitat

The snail is most common in the North Beach and settlement areas of the island, with scattered records from elsewhere.[2]

References

Iredale, Tom (1944). "The land Mollusca of Lord Howe Island". Australian Zoologist. 10 (3): 299–334.
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). "Allenella planorum Iredale, 1944". MolluscaBase. Flanders Marine Institute. Retrieved 2021-08-09. {{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.