Camaenidae

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Camaenidae
Snail Camp Gully Creek.jpg
A live individual of Meridolum gulosum
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Order: Stylommatophora
Superfamily: Helicoidea
Family: Camaenidae
Pilsbry, 1895 [1]
Type genus
Camaena
Albers, 1850
Genera

See text

Synonyms
  • Bradybaenidae Pilsbry, 1934 (1898)
  • Crassispirinae McLean, 1971
  • Zonulispirinae McLean, 1971

Camaenidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea, the typical snails and their allies. This is one of the most diverse families in the clade Stylommatophora.

These snails occur in a wide variety of habitats in the tropics of Eastern Asia and Australasia. [2]

A large American group, which is mainly represented by species from the Caribbean, has, until recently, also been subsumed under the Camaenidae. However, latest molecular phylogenetic studies showed that these species represent a different family, the Pleurodontidae. [3] [4]

This molecular study also implies that the Bradybaeninae, previously treated as a distinct family within the Helicoidea, is a junior synonym of the Camaenidae.

Anatomy

Camaenid shells are often quite large (25–50 mm), but a number of species also have small shells (<5 mm). Shells reveal a remarkable diversity in shape and colour, which is partly linked with their lifestyle. For instance, arboreal species tend to have large and conical shells, whereas terrestrial species often have rather flat shells. The shells of some taxa can be vividly coloured, showing banding or other conspicuous patterns, but others are plain and uniform.

This family is defined by a missing diverticulum and a missing stimulatory organ. It is suggested that the family Camaenidae as currently delimited is a polyphyletic taxon. There are no synapomorphies uniting this diverse family. The American group is closely related to the families Helicidae and Helminthoglyptidae, while the Australasian group is a closely related to the Bradybaenidae. [5]

In order to retain the Camaenidae as a monophyletic clade, the Neotropical Pleurodontidae will need to be removed as an independent family and the Bradybaenidae will need to be included. This taxonomic decision is currently pending a formal suggestion and wider acceptance among systematists, however.

In this family, the number of haploid chromosomes lies between 26 and 30 (according to the values in this table). [6]

Subfamilies

Division into subfamilies has been suggested, however, given the unresolved relationships on the family level, the subfamilial treatments must be considered hypothetical. They do not reflect the results of comprehensive phylogenetic analyses and are not corroborated by current molecular data.

The following three subfamilies have been recognized in the taxonomy of Bouchet & Rocroi (2005) (as based on a suggestion of Alan Solem)

A different taxonomy of the Caemenidae was used by Schileyko (1998–2003). [10]

The new taxonomy of the gastropods, published in 2017 and accepted by WoRMS, gives the following subfamilies: [11]

As of March 2023, WoRMS accepts four subfamilies: [12]

Genera

Currently, the following genera are accepted within the family Camaenidae: [13] [14]

Taxa with main occurrence in South-East Asia

Taxa with main occurrence in Papua New Guinea to Solomon Islands

Australian genera In Australia, the Camaenidae comprise 131 currently recognized genera, most of which are endemic to the continent.

Related Research Articles

<span class="mw-page-title-main">Pulmonata</span> Informal group of gastropods

Pulmonata or pulmonates is an informal group of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includes many land and freshwater families, and several marine families.

<span class="mw-page-title-main">Stylommatophora</span> Order of gastropods

Stylommatophora is an order of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This taxon includes most land snails and slugs. Stylommatophorans lack an operculum, but some close their shell apertures with temporary "operculum" (epiphragm) made of calcified mucus. They have two pairs of retractile tentacles, the upper pair of which bears eyes on the tentacle tips. All stylommatophorans are hermaphrodites.

<span class="mw-page-title-main">Bradybaeninae</span> Subfamily of gastropods

Bradybaeninae is a taxonomic subfamily of medium-sized to small land snails, terrestrial pulmonate gastropod mollusks in the family Camaenidae, superfamily Helicoidea.

<span class="mw-page-title-main">Helicoidea</span> Superfamily of gastropods

Helicoidea is a taxonomic superfamily of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora.

Amplirhagada is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Camaenidae. This genus is endemic to the Kimberley region in northwesternmost Western Australia, where it represents the most species-rich genus of land snails.

Youwanjela wilsoni is a species of air-breathing land snail, terrestrial pulmonate gastropod mollusks in the family Camaenidae.

<i>Rhagada</i> Genus of gastropods

Rhagada is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Hadrinae of the family Camaenidae.

Torresitrachia is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Camaenidae.

Westraltrachia is a genus of land snails in the family Camaenidae.

<span class="mw-page-title-main">Sagdidae</span> Family of gastropods

Sagdidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks with highest diversity in the Greater Antilles. It has been classified in its own superfamily Sagdoidea and as a member of the superfamily Helicoidea. Some species of Sagdidae are ovoviviparous.

<span class="mw-page-title-main">Charopidae</span> Family of gastropods

Charopidae is a taxonomic family of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Punctoidea.

<span class="mw-page-title-main">Helicarionidae</span> Family of land snails

Helicarionidae is a family of air-breathing land snails or semi-slugs, terrestrial pulmonate gastropod mollusks in the superfamily Helicarionoidea.

<span class="mw-page-title-main">Orthalicidae</span> Family of gastropods

Orthalicidae are a family of tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks are classified in the subfamily Orthalicoidea of the order Stylommatophora.

<span class="mw-page-title-main">Pleurodontidae</span> Family of gastropods

Pleurodontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.

<span class="mw-page-title-main">Bothriembryontidae</span> Family of gastropods

Bothriembryontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Orthalicoidea.

<span class="mw-page-title-main">Orthalicoidea</span> Superfamily of gastropods

The Orthalicoidea are a superfamily of air-breathing land snails, terrestrial gastropod mollusks in the infraorder Orthalicoidei of the suborder Helicina

George Alan Solem, known professionally as Alan Solem, was an American malacologist, a biologist who studied mollusks.

Basedowena is a genus of air-breathing land snails in the subfamily Hadrinae of the family Camaenidae.

References

  1. ↑ Pilsbry H. A. (1895). Manual of Conchology, structural and systematic, with illustrations of the species. Second series: Pulmonata. Helicidae – Volume VII. 9(33a): xxxii.
  2. ↑ Cuezzo M. G. (2003). "Phylogenetic analysis of the Camaenidae (Mollusca: Stylommatophora) with special emphasis on the American taxa". Zoological Journal of the Linnean Society 138(4): 449-476. doi : 10.1046/j.1096-3642.2003.00061.x.
  3. ↑ Wade, C.M., Hudelot, C., Davison, A., Naggs, F., Mordan, P.B. Molecular phylogeny of the helicoid land snails (Pulmonata: Stylommatophora: Helicoidea), with special emphasis on the Camaenidae. Journal of Molluscan Studies 73: 411-415.
  4. ↑ Bouchet, P., Rocroi, J.P. Classification and Nomenclator of gastropod families. Malacologia 47: 1-397.
  5. ↑ Scott B. 1996. Phylogenetic relationships of the Camaenidae (Pulmonata: Stylommatophora: Helicoidea). Journal of Molluscan Studies, 62: 65-73. Abstract
  6. ↑ 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.
  7. ↑ Kobelt W. (1902). Systematisches Conchilien-Cabinet, ed. 2, Bd. 1, Abt 13, Theil 2: 1033.
  8. ↑ Iredale T. (1938). The Australian Zoologist 9(2): 112.
  9. ↑ Solem A. (1992). Records of the South Australian Museum, Monograph series 2: 161.
  10. ↑ Schileyko A. A. (1998-2003). Treatise on Recent terrestrial pulmonate molluscs. Ruthenica supplement 2.
  11. ↑ Revised Classification, Nomenclator and Typification of Gastropod and Monoplacophoran Families; Malacologia 61(1-2):1-526. 2017
  12. ↑ "WoRMS - World Register of Marine Species - Camaenidae Pilsbry, 1895". www.marinespecies.org. Retrieved 15 March 2023.
  13. 1 2 3 4 5 Köhler F. (2010). "Three new species and two new genera of land snails from the Bonaparte Archipelago in the Kimberley, Western Australia (Pulmonata, Camaenidae)". Molluscan Research30(1): 1-16.
  14. ↑ ITIS
  15. ↑ Haas, F. (1933). "Zur Systematik der chinesischen "Helicodonten"". Archiv für Molluskenkunde. 65 (4/5): 230–231.
  16. ↑ Páll-Gergely B. & Asami T. (2014). "Additional information on the distribution, anatomy and systematics of living and fossil Chinese Plectopylidae (Gastropoda: Pulmonata)". Genus 25(3): 527-564. PDF.
  17. ↑ Maassen W. J. M. (2009). "Remarks on the genus Chloritis in Sulawesi, Indonesia, with the descriptions of two new species (Gastropoda: Pulmonata: Camaenidae)". Zoologische Mededelingen 83 HTM Archived 16 January 2014 at the Wayback Machine .
  18. ↑ Zhang, Guoyi; Naggs, Fred; Peter, Andrus; Christopher M, Wade (2024). "Phylogenetic insights into the terrestrial snails Helicoidei (Gastropoda: Stylommatophora) with special emphasis on the Camaenidae". Zoological Journal of the Linnean Society. doi: 10.1093/zoolinnean/zlae027 .
  19. ↑ Zhang, Guoyi; Liu, Zhongshu; Qi, Feng; Qaunyu, Zhang (2024). "Systematics and biogeography of the genera Pseudiberus Ancey, 1887 and Platypetasus Pilsbry, 1895 (Stylommatophora: Camaenidae), with the description of Pseudiberus shanheicus n. sp". Journal of Conchology. doi:10.61733/jconch/4510.
  20. ↑ Stanisic, J. 1996. New land snails from boggomoss environments in the Dawson Valley, southeastern Queensland (Eupulmonata: Charopidae and Camaenidae). Memoirs of the Queensland Museum 39: 343-354
  21. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Stanisic, J., Shea, M., Potter, D. and Griffiths, O. 2010. Australian Land Snails – Volume 1: A field guide to eastern Australian species. Bioculture Press, Mauritius, 591 pp.
  22. 1 2 Iredale, T. 1933. Systematic notes on Australian land shells. Records of the Australian Museum 19: 37-59
  23. ↑ Iredale, T. 1938. A basic list of the land Mollusca of Australia. Pt III. Australian Zoologist 9: 83-124
  24. ↑ Solem, A. 1992. Camaenid land snails from southern and eastern South Australia, excluding Kangaroo Island. Pt 1. Systematics, distribution and variation. Records of the South Australian Museum Monograph Series 2: 1-338
  25. ↑ Köhler, F. 2011. Australocosmica, a new genus of land snails from the Kimberley, Western Australia (Eupulmonata, Camaenidae). Malacologia, 53(2): 199−216
  26. ↑ Pilsbry, H.A. 1890. in Tryon, G.W. & Pilsbry, H.A. Manual of Conchology. Philadelphia : Conchological Section, Academy of Natural Sciences Ser. 2 Vol. 6 324 pp.
  27. ↑ Iredale, T. 1937. An annotated check list of the land shells of South and Central Australia. South Australian Naturalist 18: 6-59
  28. ↑ Thiele, J. 1931. Handbuch der Systematischen Weichtierkunde. Jena : Gustav Fischer pp. 377-778
  29. ↑ Stanisic J. (24 August) 2009. Crikey steveirwini gen. et sp. nov. from montane habitats in the Wet Tropics of northeastern Queensland, Australia (Gastropoda: Eupulmonata: Camaenidae). Zootaxa 2206: 62–68. abstract.
  30. 1 2 Köhler, F. 2011. The camaenid species of the Kimberley Islands, Western Australia (Stylommatophora: Helicoidea). Malacologia, 54(1-2): 203–406
  31. 1 2 3 4 Clark, S. 2009. A review of the land snail genus Meridolum (Gastropoda: Camaenidae) from central New South Wales, Australia. Molluscan Research, 29:61-120.
  32. ↑ Zhang, W.-H. & Shea, M. (2008). A new genus and species of land snail of the family Camaenidae from New South Wales. Molluscan Research, 28: 123-132.
  33. ↑ Köhler, F. & Shea, M. (2012). Youwanjela, a new genus of land snail from the Kimberley, Western Australia (Eupulmonata, Camaenidae). Zoosystematics and Evolution, 88: 25-31.

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