Erepta

from Wikipedia, the free encyclopedia
Erepta
Two cases by Erepta stylodon in the Naturalis Museum.

Two cases by Erepta stylodon in the Naturalis Museum .

Systematics
Order : Lung snails (pulmonata)
Subordination : Land snails (Stylommatophora)
Superfamily : Helicarionoidea
Family : Helicarionidae
Subfamily : Helicarioninae
Genre : Erepta
Scientific name
Erepta
Albers , 1850
Empty case of Erepta setiliris from Réunion.

Erepta is a genus of land snails in the family Helicarionidae . Their distribution area extends to Mauritius and Réunion . The genus includes three recent and four extinct species.

features

The case height is 6 to 9 mm, the case diameter 9 to 10 mm. The housing is pressed-conical, rather thin, translucent and has an almost conical contour of the tip. There are five to six moderately arched turns. The end turn is straight and rounded. The housing color is grain-colored. Sometimes the cases have a darker band over the periphery of the deal. The embryonic turns have distinct, regular spiral bands. The later turns have fine, irregular radial stripes with microscopic, smooth spiral lines.

Systematics

Erepta was established in 1850 by Johann Christoph Albers as a subgenus of the genus Stylodonta . The type species is Helix stylodon (Pfeiffer, 1842) . In 1908, Erepta was raised to an independent genus by Henry Haversham Godwin-Austen . Erepta has been in different families throughout its taxonomic history. In 1908 Godwin-Austen established the new subfamily Ereptinae within the family Zonitidae . Louis Germain transferred Erepta as a subgenus of the genus Microstylodonta to the family Ariophantidae in 1921 . In the following period Erepta came into the family Helicarionidae , before it was again placed in the family Ariophantidae in 2002. The currently accepted system is based on Philippe Bouchet and Jean-Pierre Rocroi, who synonymized the subfamilies Ereptinae and Helicarioninae in 2005.

The following types are known:

The species Pseudophasis nevilli was also in the genus Erepta for a long time before Anatolij A. Schileyko raised Germain's subgenus Pseudophasis from 1918 to the monotypical genus and transferred Erepta nevilli into it.

status

Ereptila wendystrahmi , Erepta chloritiformis , Erepta pyramidalis and Erepta thiriouxi are only known to be subfossilized and are considered to be extinct. Erepta stylodon is critically endangered and occurs in an area of ​​only 10 hectares on the Montagne Brise Fer in Mauritius. Erepta odontina occurs in forests on the mountains of Le Pouce, Black River Peak, Montagne Savanne, Pieter Both and Montagne Cocotte and is considered endangered. Erepta setiliris is extinct on Mauritius, but survives on Réunion. Their status is classified as critically endangered.

literature

  • Anatolij A. Schileyko: Treatise on recent terrestrial pulmonate molluscs. Part 9, Helicarionidae, Gymnarionidae, Rhysotinidae, Ariophantidae. Ruthenica, Supplement 2, 2002, p. 1236.
  • Owen Lee Griffiths, Francois Benjamin Vincent Florens: A Field Guide to the Non-Marine Molluscs of the Mascarene Islands: (Mauritius, Rodrigues and Reunion) and the Northern Dependencies of Mauritius , Bioculture Press, Mauritius, 2006, pp. 122-124

Individual evidence

  1. ↑ a b Johann Christoph Albers: The helices systematically arranged according to natural relationship , 1850, p. 109.
  2. ^ A b Henry Haversham Godwin-Austen: On the animals of genera and species of Mascarene land-mollusca belonging to the family Zonitidæ, collected by Monsieur E. Dupont. The Annals and magazine of natural history; zoology, botany, and geology, Volume 2, Series 8, 1908, pp. 422-436
  3. ^ Louis Germain: Faune malacologique terrestre et fluviatile des Iles Mascareignes. Angers, Imprimerie F. Gaultier et A. Thébert, 1921, pp. 123-128.
  4. ↑ Anatolij A. Schileyko: Treatise on recent terrestrial pulmonate molluscs. Part 9, Helicarionidae, Gymnarionidae, Rhysotinidae, Ariophantidae. Ruthenica, Supplement 2, 2002, p. 1236.
  5. ^ Philippe Bouchet, Jean-Pierre Rocroi: Part 2. Working classification of the Gastropoda. Malacologia, 47: 239-283, Ann Arbor 2005 ISSN 0076-2997
  6. ^ Ludwig Pfeiffer: Symbolae ad historiam heliceorum , Volume 2, 1842, p. 40
  7. ↑ Arthur Morelet: Testacea Africae insularis a CI. Vesco collecta et from A. Morelet descripta. Revue et magasin de zoologie pure et appliquée, Series 2, Volume 3, 1851, pp. 218-221
  8. ^ William Henry Benson: XIII. - Descriptions of several new Land Shells from the Mauritius. The Annals and Magazine of Natural History, Volume 3, Series 3, 1859, pp. 98-100
  9. ↑ Louis Germain: Sur la classification de quelques Mollusques Pulmonés des îles Mascareignes et description d'espèces nouvelles de cet archipelago, Bulletin du Muséum national d'histoire naturelle, Volume 24, 1918, p. 523.
  10. ^ Owen Lee Griffiths: Nine new species of Mascarene land snails (Mollusca: Gastropoda), Molluscan Research, Volume 20 (2), 2000, pp. 37-50
  11. ↑ a b Owen Lee Griffiths, FB Vincent Florens: Ten new species of Mascarene land snails (Mollusca: Gastropoda) and their conservation status Molluscan Research, 2004, 24, 161–177
  12. ↑ Louis Germain: Sur la classification de quelques Mollusques Pulmonés des îles Mascareignes et description d'espèces nouvelles de cet archipelago, Bulletin du Muséum national d'histoire naturelle, Volume 24, 1918, p. 520.
  13. ↑ Anatolij A. Schileyko: Treatise on recent terrestrial pulmonate molluscs. Part 9, Helicarionidae, Gymnarionidae, Rhysotinidae, Ariophantidae. Ruthenica, Supplement 2, 2002, p. 1239.