Platyla dupuyi

from Wikipedia, the free encyclopedia
Platyla dupuyi
Systematics
Superordinate : Caenogastropoda
Order : Architaenioglossa
Superfamily : Cyclophoroidea
Family : Mulm needles (Aciculidae)
Genre : Platyla
Type : Platyla dupuyi
Scientific name
Platyla dupuyi
( Paladilhe , 1868)

Platyla dupuyi is a land-living snail from the family of Mulmnadeln (Aciculidae) in the order of Architaenioglossa ("old bandworm").

features

The right-hand wound, tapered cases are 3.0 to 3.6 mm high and 1.1 to 1.25 mm wide. They have 5.5 to 6 slightly curved turns. The penultimate passage already rises to the mouth; the last handle is less than half the total height of the case. The passageways are neither folded nor have a suture thread below the seam . In the frontal view, the muzzle is crooked pear-shaped. In the side view, the basal edge of the mouth recedes somewhat, a sinulus is missing. The edge of the mouth is enlarged. The height of the mouth is 0.95 to 1.05 mm, the width 0.65 to 0.70 mm. The parietal callus is clearly formed, an angularis is present. In contrast, the umbilical callus is only weakly developed; it can be traced to the middle of the parietal allus. A neck bulge is completely absent or there is only a very slight basal thickening of the housing. The housing is yellow-brown, the surface is very shiny.

Similar species

Platyla dupuyi is most similar to the species Platyla curtii , whose range is around 500 km to the east. Platyla dupuyi is larger and has no noticeable neck bulge. Other medium-sized Platyla species also have a clear neck bulge. Platyla curtii also has less flattened walkways and the last walkway is more than half the total height. The housing of Platyla polita is larger and slimmer with 6 to 6.5 turns.

Geographical distribution, occurrence and way of life

The distribution area of ​​the species extends, albeit very fragmentarily, from Lorraine, the Jura and Savoy over the Massif Central to the French Pyrenees . The only Spanish occurrence ( Valle de Arán ) is north of the main ridge of the Pyrenees and therefore belongs to the North Pyrenees zoogeographically. An isolated occurrence is located near the Loire estuary in western France. The animals live in the deciduous forest on well-overgrown scree slopes.

Taxonomy

The taxon was first introduced into scientific literature in 1868 by Alcide Paladilhe as Acme dupuyi . Boeters et al. (1989) placed them in the genus Platyla . It is the type species of the genus Platyla Moquin-Tandon, 1856.

supporting documents

literature

  • Hans D. Boeters, Edmund Gittenberger, Péter Subai: The Aciculidae (Mollusca, Gastropoda, Prosobranchia) . Zoologische Verhandelingen, 252: pp. 1-234, Leiden 1989. PDF
  • Michael P. Kerney, RAD Cameron & Jürgen H. Jungbluth: The land snails of Northern and Central Europe. 384 pp., Paul Parey, Hamburg & Berlin 1983 ISBN 3-490-17918-8 (p. 90)
  • Francisco W. Welter-Schultes: European non-marine molluscs, a guide for species identification = identification book for European land and freshwater mollusks. A1-A3 S., 679 S., Q1-Q78 S., Göttingen, Planet Poster Ed., 2012 ISBN 3-933922-75-5 , ISBN 978-3-933922-75-5

Individual evidence

  1. ↑ Alcide Paladilhe: Nouvelles miscellanées malacologiques. Monograph du genre Acme. Revue et Magasin de Zoologie pure et appliquée et de Sériciculture Comparée, 2nd série, 20: pp. 225–245, 273–283, 321–330, Paris 1868 online at www.biodiversitylibrary.org (p. 274).

On-line

Web links