Allenella planorum, also known as the angular pinhead snail, is a species of land snail in the family Punctidae.[2][3] It is endemic to Australia's Lord Howe Island in the Tasman Sea.[3][4]
| Allenella planorum | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Punctidae |
| Genus: | Allenella |
| Species: | A. planorum
|
| Binomial name | |
| Allenella planorum | |
| |
| Location of Lord Howe Island | |
| Synonyms[2] | |
| |
Description
editThe 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.[4]
Distribution and habitat
editThe snail is most common in the North Beach and settlement areas of the island, with scattered records from elsewhere.[4]
References
edit- ^ Iredale, Tom (1944). "The land Mollusca of Lord Howe Island". Australian Zoologist. 10 (3): 299–334.
- ^ a b MolluscaBase, ed. (2021). "Allenella planorum Iredale, 1944". MolluscaBase. Flanders Marine Institute. Retrieved 14 August 2024.
- ^ a b "Species Allenella planorum Iredale, 1944". Australian Faunal Directory. Department of Climate Change, Energy, the Environment and Water. Retrieved 14 August 2024.
- ^ 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.