Palaina levicostulata

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Palaina levicostulata
Scientific classification OOjs UI icon edit-ltr.svg
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]
Lord Howe Island.PNG
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.

Contents

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]

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References

  1. ↑ Iredale, Tom (1944). "The land Mollusca of Lord Howe Island". Australian Zoologist. 10 (3): 299–334.
  2. 1 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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