Biology:Palaina levicostulata
| Palaina levicostulata | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Architaenioglossa |
| Superfamily: | Cyclophoroidea |
| Family: | Diplommatinidae |
| Genus: | Palaina |
| Species: | P. levicostulata
|
| Binomial name | |
| Palaina levicostulata Iredale, 1944[1]
| |
| |
| Location of Lord Howe Island | |
Palaina levicostulata, also known as the fine-ribbed staircase snail, is a species of staircase snail that is endemic to Australia 's Lord Howe Island in the Tasman Sea.
Description
The conical pupiform shell of adult snails is 4.9–5.1 mm in height, with a diameter of 2.4–2.6 mm and a conical spire. It is very pale to dark golden-brown in colour, sometimes with a white peripheral band on the final whorl. It has fine, closely spaced, axal ribs. The umbilicus is closed. The circular aperture has a strongly reflected lip and an operculum is present. The animal has a white body with dark grey cephalic tentacles and black eyes.[2]
Habitat
The snail is most common in the Settlement region, with a few records from elsewhere on the island.[2]
References
- ↑ Iredale, Tom (1944). "The land Mollusca of Lord Howe Island". Australian Zoologist 10 (3): 299–334. https://www.biodiversitylibrary.org/part/50170.
- ↑ 2.0 2.1 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.
Wikidata ☰ Q106097454 entry
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