Palaina capillacea

Palaina capillacea, also known as the strong-bladed staircase snail, is a species of staircase snail that is endemic to Australia's Lord Howe Island in the Tasman Sea.

Palaina capillacea
Specimen of Palaina capillacea at Naturalis Biodiversity Center
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Caenogastropoda
informal group Architaenioglossa
Superfamily:
Cyclophoroidea
Family:
Diplommatinidae
Genus:
Palaina
Species:
P. capillacea
Binomial name
Palaina capillacea
(Pfeiff., 1855)
Location of Lord Howe Island
Synonyms
  • Diplommatina capillacea Pfeiff., 1855
  • Palaina capillacea definita Iredale, 1944
  • Palaina howeinsulae Iredale, 1944
  • Palaina nicholsae Iredale, 1944

Description

The pupiform shell of adult snails is 3.8–4.1 mm in height, with a diameter of 1.9–2.1 mm and a conical spire. It is white in colour, with impressed sutures. It has bold, closely spaced, axal ribs. The umbilicus is closed. The circular aperture has a flared lip and an operculum is present. The animal has a white body with dark grey cephalic tentacles and black eyes.[1]

Habitat

The snail is common and widespread throughout the island.[1]

References
  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.
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