Choanomphalus maacki
an apertural view of the shell of Choanomphalus maacki maacki
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Hygrophila
Superfamily:
Planorboidea
Family:
Planorbidae
Subfamily:
Planorbinae
Tribe:
Planorbini
Genus:
Choanomphalus
Species:
C. maacki
Binomial name
Choanomphalus maacki
Gerstfeldt, 1859[2]
Synonyms[3]

of C. maacki maacki:

of C. maacki andrussowianus:

  • Choanomphalus elatospiralis B. Dybowski & Grochmalicki, 1925
  • Choanomphalus andrussovianus B. Dybowski & Grochmalicki, 1925

of C. maacki elatior:

  • Choanomphalus korotnevi elatior Lindholm, 1909

Choanomphalus maacki is a species of freshwater air-breathing snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails, or planorbids.

Choanomphalus maacki is the type species of the genus Choanomphalus.[3]

Subspecies

  • Choanomphalus maacki maacki Gerstfeldt, 1859[3]
  • Choanomphalus maacki andrussowianus (Lindholm, 1909)[3][6]
  • Choanomphalus maacki elatior Lindholm, 1909[3][6]

However, IUCN Red List 2013 lists these three as synonyms.[1]

Distribution

This species is found in Lake Baikal, Russia.[1] Its natural habitats are freshwater lakes and river mouths.[1]

Description

The width of the shell is 5–6 mm.[7] The height of the shell is 2.5–3.0 mm.[7]

Apical view of the shell.
Umbilical view of the shell.

References

  1. 1 2 3 4 Vinarski, M.; Sitnikova, T. (2012). "Choanomphalus maacki". IUCN Red List of Threatened Species. 2012: e.T188932A1915849. doi:10.2305/IUCN.UK.2012-1.RLTS.T188932A1915849.en. Retrieved 18 November 2021.
  2. ↑ (in German) Gerstfeldt G. (1859). "Ueber Land- und Süsswasser-Mollusken Sibiriens und Amur-Gebietes". Mémoires des Savants étrangers 9: 507-548.
  3. 1 2 3 4 5 Kantor Yu I., Vinarski M. V., Schileyko A. A. & Sysoev A. V. (published online on March 2, 2010). "Catalogue of the continental mollusks of Russia and adjacent territories". Version 2.3.1.
  4. ↑ (in German) Dybowski W. (1901). "Beschreibung neuer Choanomphalus-Arten". Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft 33(8): 119–125.
  5. ↑ (in Polish) Dybowski B. & Grochmalicki J. (1925). "Przyczynki doo znajomości mięczaków jeziora Bajkalskiego. (Contributions à la connaissance des Mollusques du lac Baical)". Wladislaviidae nom. fam. Kosmos (Lwow), 50: 819–881.
  6. 1 2 (in German) Lindholm W. A. (1909). "Die Mollusken des Baikal-Sees (Gastropoda et Pelecypoda) systematisch und zoogeographisch bearb". Wissenschaftliche Ergebnisse einer zoologische Expedition nach dem Baikal-See unter Leitung des Prof. Alexis Korotneff i. d. J. 1900–1902, 4. Kiew und Berlin, Fridländer und Sohn: 1–104. page 10, plate 2, fig. 28–30; page 13, plate 2, fig. 25–27.
  7. 1 2 (in French) Bourguignat J. R. (1860). "Monographie du genre Choanomphalus". Revue et Magasin de Zoologie, série 2, 12: 527–531. plate 23.

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