Semilaoma costata

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Semilaoma costata
Lord Howe Island.PNG
Computerized Image of Lord Howe Island
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Order: Stylommatophora
Family: Punctidae
Genus: Semilaoma
Species:
S. costata
Binomial name
Semilaoma costata
Shea & Griffiths, 2010 [1]
Lord Howe Island.PNG
Location of Lord Howe Island

Semilaoma costata, also known as the coarse-ribbed pinhead snail, is a tiny species of land snail that is endemic to Australia's Lord Howe Island in the Tasman Sea. [2]

Contents

Description

The subdiscoidal shell of the mature snail is 0.7–0.8 mm in height, with a diameter of 1.3–1.5 mm, and a low to flat spire. It is pale yellow to white in colour. The whorls are rounded to shouldered. The sutures are impressed, with moderately closely-spaced radial ribs. It has an ovately lunate aperture, and a moderately wide umbilicus. The animal is unknown. [2]

Distribution and habitat

The snail is common and widespread in the North Bay and settlement areas of the island, living in plant litter. [2]

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References

  1. ↑ Stanisic, J; Shea, M; Potter, D; Griffiths, O (2010). Australian land snails. Volume 1. A field guide to eastern Australian species. Brisbane: Queensland Museum.
  2. 1 2 3 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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