Euconulidae

Euconulidae is a taxonomic family of minute, air-breathing land snails, terrestrial pulmonate gastropod mollusks or micromollusks. This land snail family is closely allied to the Zonitidae, the glass snails.

Euconulidae
Drawing of a live Euconulus fulvus and its shell
Scientific classification
Kingdom:
Phylum:
Class:
(unranked):
Superfamily:
Trochomorphoidea
Family:
Euconulidae

Baker, 1928

Taxonomy

The family Euconulidae was originally placed within the superfamily Gastrodontoidea according to the taxonomy of the Gastropoda (Bouchet & Rocroi, 2005).[1] Since 2017, its classification has been revised and it now belongs to the superfamily Trochomorphoidea [2]

Distribution

The distribution of the Euconulidae includes the Nearctic, the western-Palearctic, the eastern-Palearctic, the Neotropical zone, the Ethiopian zone, Malagasy, south-eastern Asia, Australia, Polynesia and Hawaii.[3]

Shell description

These minute snails have a shell which is roundly conical and broad-based, like the shape of an old-fashioned European woven bee hive or skep. For this reason these snails are sometimes known as "hive snails".

The shells of most Euconulidae are only about 3 mm in size, amber-colored and translucent.

Anatomy

In this family, the number of haploid chromosomes lies between 26 and 30 (according to the values in this table).[4]

Genera

Subfamilies and genera in the family Euconulidae include:

Euconulinae

  • Afroconulus Van Mol & van Bruggen, 1971[5]
  • Afroguppya de Winter & Bruggen, 1992[5]
  • Afropunctum F. Haas, 1934[5]
  • Cancelloconus I. Rensch, 1932[5]
  • Coneuplecta Möllendorff, 1893[5]
  • Diepenheimia Preston, 1913[5]
  • Discoconulus Reinhardt, 1883[5]
  • Dryachloa F. G. Thompson & H. G. Lee, 1980[5]
  • Euconulus Reinhardt, 1883 - type genus of the family Euconulidae[1]
  • Guppya Mörch, 1867[5]
  • Habroconus Crosse & P. Fischer, 1872[5]
  • Kororia H. B. Baker, 1941[5]
  • Louisia Godwin-Austen, 1908[5]
  • Luchuconulus Pilsbry, 1928[5]
  • Palaua H.B. Baker, 1941[5]
  • Papuarion Van Mol, 1973[5]
  • Parasitala Thiele, 1931[5]
  • Sabalimax Tillier & Bouchet, 1989[5]
  • Serostena Iredale, 1941[5]
  • Turrisitala Iredale, 1933[5]
  • Velifera W.G. Binney, 1879[5]

Microcystinae

Cladogram

The following cladogram shows the phylogenic relationships of this family with the other families within the limacoid clade:[3]

 limacoid clade 
 Staffordioidea 

Staffordiidae

 Dyakioidea 

Dyakiidae

 Gastrodontoidea 

Pristilomatidae

Chronidae

Euconulidae

Trochomorphidae

Gastrodontidae

Oxychilidae

 Parmacelloidea 

Trigonochlamydidae

Parmacellidae

Milacidae

 Zonitoidea 

Zonitidae

 Helicarionoidea 

Helicarionidae

Ariophantidae

Urocyclidae

 Limacoidea 

Vitrinidae

Boettgerillidae

Limacidae

Agriolimacidae

References

  1. Bouchet, Philippe; Rocroi, Jean-Pierre; Frýda, Jiri; Hausdorf, Bernard; Ponder, Winston; Valdés, Ángel & Warén, Anders (2005). "Classification and nomenclator of gastropod families". Malacologia. Hackenheim, Germany: ConchBooks. 47 (1–2): 1–397. ISBN 3-925919-72-4. ISSN 0076-2997.
  2. Bouchet P., Rocroi J.P., Hausdorf B., Kaim A., Kano Y., Nützel A., Parkhaev P., Schrödl M. & Strong E.E. (2017). Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia. 61(1-2): 1-526
  3. Hausdorf B. (2000). "Biogeography of the Limacoidea sensu lato (Gastropoda: Stylommatophora): Vicariance Events and Long-Distance Dispersal". Journal of Biogeography 27(2): 379-390. doi:10.1046/j.1365-2699.2000.00403.x, JSTOR.
  4. Barker G. M.: Gastropods on Land: Phylogeny, Diversity and Adaptive Morphology. in Barker G. M. (ed.): The biology of terrestrial molluscs. CABI Publishing, Oxon, UK, 2001, ISBN 0-85199-318-4. 1-146, cited pages: 139 and 142.
  5. MolluscaBase (2018). Euconulinae H.B. Baker, 1928. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=994926 on 2018-09-14
  6. Bouchet P. & Abdou A. (2001). "Recent Extinct Land Snails (Euconulidae) from the Gambier Islands with Remarkable Apertural Barriers". Pacific Science 55(2): 121-127. doi:10.1353/psc.2001.0011.
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