Renea moutonii singularis

Renea moutonii singularis
Shell of Renea moutonii singularis (specimen at MNHN, Paris)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Architaenioglossa
Superfamily: Cyclophoroidea
Family: Aciculidae
Genus: Renea
Species:
Subspecies:
R. m. singularis
Trinomial name
Renea moutonii singularis
Pollonera, 1905
Synonyms
  • Caziotia singularis Pollonera, 1905 ·(basionym)
  • Renea (Caziotia) singularis (Pollonera, 1905) (unaccepted combination and rank)
  • Renea singularis (Pollonera, 1905)
  • Renea singularis singularis (Pollonera, 1905)

Renea moutonii singularis is a subspecies 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 subspecies 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.[1]

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]

Renea moutonii 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. ^ a b c Bouchet, P.; Seddon, M.B. (1996). "Renea moutonii ssp. singularis". IUCN Red List of Threatened Species. 1996: e.T19430A8890560. doi:10.2305/IUCN.UK.1996.RLTS.T19430A8890560.en. Retrieved 12 January 2020.
  2. ^ Conchology Inc http://www.conchology.be/?t=68&u=824619&g=fd769883d258b1abcd889fd40a63f641&q=99b5128779de6c5043dc19891a988bcc retrieved 12 June 2015
  3. ^ a b c Goettingen University AnimalBase http://www.animalbase.uni-goettingen.de/zooweb/servlet/AnimalBase/home/species?id=2827 retrieved 12 June 2015
  • Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16, 2017