Tudorella

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Tudorella
Tudorella ferruginea (Lamarck, 1822)

Tudorella ferruginea (Lamarck, 1822)

Systematics
Superordinate : Caenogastropoda
Order : Sorbeoconcha
Subordination : Hypsogastropoda
Superfamily : Littorinoidea
Family : Land snails (Pomatiidae)
Genre : Tudorella
Scientific name
Tudorella
P. Fischer , 1885
Tudorella sulcata (Draparnaud, 1805)

Tudorella is a genus of land-living snails from the family of terrestrial snails (Pomatiidae) in the order of the Sorbeoconcha . The oldest species comes from the Miocene of France.

features

The cases of the representatives of the genus Tudorella reach about 12 to 22 mm in height and 10 to 16 mm in width. They have 5 to 6 moderately to well arched turns, which are separated from each other by a flat to moderately deep seam. The housings are elongated-conical in shape with a blunt apex. The last turn reaches 5/8 to 3/4 of the total height of the case. The sculpture consists of a net-like pattern that often weakens on the end turn. There are around 20 to 30 spiral strips in total. The Protoconch shows a microsculpture made of microscopic pits. The mouth opening is egg-shaped, rounded at the base and approximately angled in the upper corner. The hem of the mouth is simple and hardly expanded. In all species of the genus, the bodies of the females are on average slightly larger than the bodies of the males.

The operculum is egg-shaped and calcified. It only has 1¼ to three turns. The windings turn counterclockwise. The nucleus is close to the edge. The operculum sits deep to moderately deep in the mouth.

Geographical distribution

The recent species of the genus Tudorella live in the coastal regions of the western Mediterranean and North Africa; in North Africa to about 80 km from the coast. Most of the time they live there, buried deep in the ground or in the leaf litter under limestone rocks. They are only active in damp weather.

Taxonomy

The taxon was proposed by Paul Henri Fischer in 1885 in the work "Manuel de conchyliologie et de paleontologie conchyliologique" as a cesarean section of Cyclostoma . The name Tudorella appears in this work without a definition, only with the mention of a species, Cyclostoma ferruginea Lamarck. According to the International Rules for Zoological Nomenclature , this was a valid proposal at the time, Tudorella Fischer, 1885 is available. The number of species in the genus Tudorella is still somewhat uncertain. Three types are generally recognized. Pfenninger et al. (2010), however, assume eight recent species, two of which are still undescribed. A population from southern Portugal that has not yet been described in detail in the literature could, according to F. Welter Schultes, be another still undescribed species.

Tudorella sulcata pachya (Pallary, 1936) from eastern Morocco has almost completely disappeared from the literature (and has not been considered in the more recent works) . The subspecies (or species?) Is characterized by very large cases up to 27 mm in height.

supporting documents

literature

  • Markus Pfenninger, Errol Véla, Ruth Jesse, Miren Arantzazu Elejalde, Fabio Liberto, Frédéric Magnin, Alberto Martínez-Ortí; Temporal speciation pattern in the western Mediterranean genus Tudorella P. Fischer, 1885 (Gastropoda, Pomatiidae) supports the Tyrrhenian vicariance hypothesis. Molecular Phylogenetics and Evolution, 54: 427-436, 2010 doi : 10.1016 / j.ympev.2009.09.024
  • Alberto Martínez-Ortí, Miren Arantzazu Elejalde, María José Madeira, Benjamín Gómez Moliner: Morphological and DNA-based taxonomy of Tudorella P. Fischer, 1885 (Caenogastropoda: Pomatiidae). Journal of Conchology, 39 (5): 553-568, 2008 PDF
  • Wilhelm Wenz: Gastropoda extramarina tertiaria. In: C. Diener (Ed.): Fossilium catalogus , 1 Animalium, 17 + 23: 1–1862, Berlin 1923 Online at www.biodiversitylibrary.org (pp. 1819ff.).
  • Wilhelm Wenz: Gastropoda. Part I: General Part and Prosobranchia. In: Handbuch der Paläozoologie Volume 6, 948 p., Berlin, Verlag von Gebrüder Borntraeger, 1938 (p. 535)

On-line

Individual evidence

  1. ↑ Paul-Henri Fischer, P. Oehlert, SP Woodward: Manuel de conchyliologie et de paleontologie conchyliologique ou histoire naturelle des mollusques vivants et fossils suivi d'un appendice sur les brachipodes. Avec 23 planches contenant 600 figures et 1138 gravures dans le texte. Pp. I-XXIV, 1-1369, pl. 1–23, 1 map, Paris, Savy 1880-1887 (part 8: pp. 689–784 published in January 1885) online at www.biodiversitylibrary.org (p. 747 ).
  2. ↑ Animal Base: Picture summary of Tudorella-sulcata_26.jpg
  3. ^ Paul Pallary: Deuxième complément à la faune malacologique de la Berbérie. Journal de Conchyliologie, 80 (1): 5-65, 1936
  4. ^ Forum Francophone des Collectionneurs de Coquillages Actuels: Tudorella sulcata

Web links

Commons : Tudorella  - collection of images, videos and audio files