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):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Sigmurethra
clade limacoid clade
Superfamily:
Family:
Euconulidae

Baker, 1928

Taxonomy

The family Euconulidae was placed within the superfamily Gastrodontoidea according to the taxonomy of the Gastropoda (Bouchet & Rocroi, 2005).[1]

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.[2]

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).[3]

Genera

Subfamilies and genera in the family Euconulidae include:

Euconulinae

  • Afroconulus Van Mol & van Bruggen, 1971[4]
  • Afroguppya de Winter & Bruggen, 1992[4]
  • Afropunctum F. Haas, 1934[4]
  • Cancelloconus I. Rensch, 1932[4]
  • Coneuplecta Möllendorff, 1893[4]
  • Diepenheimia Preston, 1913[4]
  • Discoconulus Reinhardt, 1883[4]
  • Dryachloa F. G. Thompson & H. G. Lee, 1980[4]
  • Euconulus Reinhardt, 1883 - type genus of the family Euconulidae[1]
  • Guppya Mörch, 1867[4]
  • Habroconus Crosse & P. Fischer, 1872[4]
  • Kororia H. B. Baker, 1941[4]
  • Louisia Godwin-Austen, 1908[4]
  • Luchuconulus Pilsbry, 1928[4]
  • Palaua H.B. Baker, 1941[4]
  • Papuarion Van Mol, 1973[4]
  • Parasitala Thiele, 1931[4]
  • Sabalimax Tillier & Bouchet, 1989[4]
  • Serostena Iredale, 1941[4]
  • Turrisitala Iredale, 1933[4]
  • Velifera W.G. Binney, 1879[4]

Microcystinae

Cladogram

The following cladogram shows the phylogenic relationships of this family with the other families within the limacoid clade:[2]

 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

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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. 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.
  3. 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.
  4. 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
  5. 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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