Renea moutonii singularis
| Renea moutonii singularis | |
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| Species: | R. singularis
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| Renea singularis Pollonera, 1905
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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
- ^ a b Bouchet P. & Seddon M. B. (1996). Renea singularis. 2006 IUCN Red List of Threatened Species. Downloaded on 7 August 2007.
- ^ Conchology Inc http://www.conchology.be/?t=68&u=824619&g=fd769883d258b1abcd889fd40a63f641&q=99b5128779de6c5043dc19891a988bcc retrieved 12 June 2015
- ^ a b c Goettingen University AnimalBase http://www.animalbase.uni-goettingen.de/zooweb/servlet/AnimalBase/home/species?id=2827 retrieved 12 June 2015
- ^ http://www.iucnredlist.org/details/19430/0