Diaper snails

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Diaper snails
Bellied diaper snail (Vertigo moulinsiana (Dupuy, 1849))

Bellied diaper snail ( Vertigo moulinsiana (Dupuy, 1849))

Systematics
Subclass : Orthogastropoda
Superordinate : Heterobranchia
Order : Lung snails (pulmonata)
Subordination : Land snails (Stylommatophora)
Superfamily : Pupilloidea
Family : Diaper snails
Scientific name
Vertiginidae
Fitzinger , 1833

The diaper snails (Vertiginidae) are a family from the suborder of the land snails (Stylommatophora). They are mostly small forms ("micromollusks"). The oldest representatives are known from the Lower Cretaceous .

features

The housings are usually very small (a few millimeters) and ovoid to cylindrical. They are smooth to heavily ribbed. The mouth is almost always somewhat narrowed by protrusions ("teeth", lamellae or calli ), which are often typical of genera or species. The mouth edges are simple or bent, e.g. T. also slightly thickened. The animals have only a pair of tentacles (exception Gastrocoptinae) on which the eyes sit; the front tentacles are largely reduced. The navel is usually very narrow and open. In the hermaphroditic genital apparatus, the penis and epiphallus are often very clearly separated from each other. The inner wall of the penis has elongated, smooth folds. The prostate consists of a few acini and sits at the base of the albumin gland. The penile appendix is ​​only present in the Nesopupinae. The penis retractor is unbranched. The stem of the spermathec has no diverticula.

Teeth of the mouth 1-6 folds or plicae: 1 = basal 2 = infrapalatal, 3 = lower palatal fold 4 = interpalatal 5 = upper palatal fold 6 = suprapalatal 7-9 lamellae: 7 = infracolumellar, 8 = columellar, 9 = supracolumellar 10 -13 lamellae: 10 = infraparietal, 11 = parietal, 12 = angular twin, 13 = parallel (according to Manual of Conchology, Pulmonata, vol. 25, S.VII)

Occurrence and way of life

The spread of the family is cosmopolitan. They occur in dry and moist habitats.

Systematics

The family of diaper snails (Vertiginidae) are one of 13 families of the superfamily Pupilloidea . The family is divided into three subfamilies Vertigininae Fitzinger, 1833 (with the tribe Vertiginini and Truncatellinini), Gastrocoptinae Pilsbry, 1918 and Nesopupinae Steenberg, 1925. Some authors consider the Gastrocoptinae and Truncatellinini to be separate families.

supporting documents

literature

  • Rosina Fechter, Gerhard Falkner: Mollusks. (Steinbach's natural guide 10). Mosaik-Verlag, Munich 1990, ISBN 3-570-03414-3 .
  • Michael P. Kerney, RAD Cameron, Jürgen H. Jungbluth: The land snails of Northern and Central Europe. Paul Parey, Hamburg / Berlin 1983, ISBN 3-490-17918-8 .
  • Victor Millard: Classification of the Mollusca. A Classification of World Wide Mollusca . Rhine Road, South Africa 1997, ISBN 0-620-21261-6 .
  • Christopher M. Wade, Peter B. Mordan, Fred Naggs: Evolutionary relationships among the Pulmonate land snails and slugs (Pulmonata, Stylommatophora). In: Biological Journal of the Linnean Society. 87, Oxford 2006, ISSN  0024-4066 , pp. 593-610.
  • Anatolij A. Schileyko: Treatise on Recent Terrestrial Pulmonate Molluscs. Part 2: Gastrocoptidae, Hypselostomatidae, Vertiginidae, Truncatellinidae, Pachnodidae, Enidae, Sagdidae. In: Ruthenica. Supplement 2 (2), Moscow 1998, ISSN  0136-0027 , pp. 129-261.
  • Adolf Zilch: Gastropoda. Part 2: Euthyneura. In: Handbuch der Paläozoologie. Volume 6, Verlag von Gebrüder Borntraeger, Berlin 1960, pp. 1-834.

Individual evidence

  1. ↑ after Bouchet & Rocroi (2005)
  2. ↑ Schileyko, 1998.
  3. ↑ Shinji Isaji: Terrestrial and Freshwater Pulmonate Gastropods from the Early Cretaceous Kuwajima Formation, Tetori Group, Japan. In: Paleontological Research. 14 (4), 2010, pp. 233-243, doi : 10.2517 / 1342-8144-14.4.233 .

Web links

Commons : Vertiginidae  - Collection of images, videos and audio files