Allopeas sykesi

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Allopeas sykesi
Allopeas sykesi 001.jpg
Shell of Allopeas sykesi (holotype)
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Suborder: Achatinina
Superfamily: Achatinoidea
Family: Achatinidae
Genus: Allopeas
Species:
A. sykesi
Binomial name
Allopeas sykesi
(Pilsbry, 1906)
Synonyms

Opeas sykesiPilsbry, 1906

Allopeas sykesi is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae. [1]

Contents

Description

The length of the shell attains 12.9 mm, its diameter 3.5 mm.

(Original description) The shell is perforate, resembling Allopeas gracile in its sculptural pattern but with significantly shorter, more compactly coiled whorls, resulting in a greater number of whorls in shells of equivalent length.

The spire tapers straight and uniformly to a small protoconch. The shell typically consists of 8.5 to 10 whorls, with the initial 1.5 embryonic whorls being smooth except for a subtle subsutural radial striation. This striation becomes more pronounced in the post-embryonic whorls, creating a fine, irregularly developed crenulation along the suture, which then smooths out on the lower whorls.

The later whorls are somewhat flattened, and the suture is well-defined and impressed. The aperture is vertical and considerably shorter than in Allopeas gracile. The outer lip is weakly arcuate, with a slight forward arch, while the basal margin is well-rounded. The columella is relatively straight, with its edge reflexed. [2]

Distribution

This species occurs in Sri Lanka. [3]

Related Research Articles

<i>Allopeas</i> Genus of gastropods

Allopeas, common name the "awl snails", is a genus of small, tropical, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Achatinidae.

<i>Ringicella ringens</i> Species of gastropod

Ringicella ringens is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Odontostomidae.

<i>Pontiothauma minus</i> Species of gastropod

Pontiothauma minus is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.

<i>Eostrobilops hirasei</i> Species of gastropod

Eostrobilops hirasei is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Strobilopsidae.

<i>Allopeas gracile</i> Species of gastropod

Allopeas gracile, common name the graceful awlsnail, is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

<i>Allopeas micra</i> Species of gastropod

Allopeas micra is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

<i>Longchaeus insularum</i> Species of sea snail

Longchaeus insularum is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.

<i>Umbonium sagittatum</i> Species of gastropod

Umbonium sagittatum is a species of very small sea snail, a marine gastropod mollusc or micromollusc in the family Trochidae, the top snails.

<i>Conasprella imitator</i> Extinct species of gastropod

Conasprella imitator is an extinct species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails and their allies.

<i>Allopeas acmella</i> Species of gastropod

Allopeas acmella is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

<i>Allopeas brevispira</i> Species of gastropod

Allopeas brevispira is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

Allopeas hedeius is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

<i>Allopeas heudei</i> Species of gastropod

Allopeas heudei is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

<i>Allopeas satsumense</i> Species of gastropod

Allopeas satsumense is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

<i>Allopeas latebricola</i> Species of gastropod

Allopeas latebricola is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

Allopeas mariae is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

<i>Allopeas prestoni</i> Species of gastropod

Allopeas prestoni is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

<i>Allopeas pusillum</i> Species of gastropod

Allopeas pusillum is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

<i>Allopeas recisa</i> Species of gastropod

Allopeas recisa is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

<i>Allopeas subula</i> Species of gastropod

Allopeas subula is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

References

  1. ↑ Allopeas sykesi (Pilsbry, 1906) . 27 August 2024. Retrieved through: World Register of Marine Species .
  2. ↑ Pilsbry, H.A. (1906–1907). Manual of conchology, structural and systematic, with illustrations of the species. Ser. 2, Pulmonata. Vol. 18: Achatinidae: Stenogyrinae and Coeliaxinae. Philadelphia: Conchological Department, Academy of Natural Sciences. Retrieved 27 August 2024.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  3. ↑ Gbif.org: Allopeas sykesi
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