Pernastela gnoma
Pernastela gnoma, also known as the dwarf pinhead snail, is a tiny species of land snail that is endemic to Australia's Lord Howe Island in the Tasman Sea.[2]
| Pernastela gnoma | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Order: | Stylommatophora |
| Family: | Punctidae |
| Genus: | Pernastela |
| Species: | P. gnoma |
| Binomial name | |
| Pernastela gnoma | |
 | |
| Location of Lord Howe Island | |
Description
The trochoidal shell of the mature snail is 0.8 mm in height, with a diameter of 1.2–1.3 mm, and a moderate spire. It is golden-brown in colour. The whorls are shouldered and sutures impressed, with moderately spaced radial ribs. It has an ovately lunate aperture and a narrow umbilicus.[2]
Distribution and habitat
The snail is common and widespread across the island, inhabiting plant litter.[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). "Pernastela gnoma Iredale, 1944". MolluscaBase. Flanders Marine Institute. Retrieved 2021-08-16.
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