Renea singularis

Renea singularis
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Caenogastropoda
informal group Architaenioglossa
Superfamily: Cyclophoroidea
Family: Aciculidae
Genus: Renea
Species: R. singularis
Binomial name
Renea singularis
Pollonera, 1905

Renea singularis is a species of land snail with an operculum, a terrestrial gastropod mollusk in the family Aciculidae.[1] It was described by Pollonera in 1905. The common name is needle snail.[2]

Distribution

This species is endemic to France. It has a very narrow distribution, being found only in the Alpes-Maritimes, in the Loup and Siagne valleys.[3] Because of its limited distribution and rarity within its range it is considered threatened. The IUCN red list of endangered species lists it as vulnerable.[4]

Description

These snails are between 3 and 4 mm long and 1.1 to 1.3 mm wide. Their elongated shells are light brown with fine ribbing (60-70 ribs with a penultimate whorl). The apertural margin in lateral view is oblique / and (-shaped, with an exaggerated sinulus, and a P-like opening at the suture in the last quarter of the last whorl. There is no cervical callus. The apertural margin can be thick.[3]

R. singularis is possibly the end of an evolutionary line that begins with an almost straight apertural margin (in lateral view) towards a much more oblique and protruded margin with the needle snail having the longest sinulus along the suture.[3]

References

  1. 1 2 Bouchet P. & Seddon M. B. (1996). Renea singularis. 2006 IUCN Red List of Threatened Species. Downloaded on 7 August 2007.
  2. ↑ Conchology Inc http://www.conchology.be/?t=68&u=824619&g=fd769883d258b1abcd889fd40a63f641&q=99b5128779de6c5043dc19891a988bcc retrieved 12 June 2015
  3. 1 2 3 Goettingen University AnimalBase http://www.animalbase.uni-goettingen.de/zooweb/servlet/AnimalBase/home/species?id=2827 retrieved 12 June 2015
  4. ↑ http://www.iucnredlist.org/details/19430/0
This article is issued from Wikipedia - version of the 6/12/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.