Choanomphalus amauronius explained

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

Subspecies

• Choanomphalus amauronius amauronius Bourguignat, 1860^[1]
• Choanomphalus amauronius angulatus (B. Dybowski & Grochmalicki, 1925)^{[1] [2]}
• Choanomphalus amauronius westerlundianus Lindholm, 1909^{[1] [3]} The subspecific name westerlundianus is in honor of Swedish malacologist Carl Agardh Westerlund.^[3]

Distribution

This species is found in Lake Baikal, Russia and in Angara River.^[1]

Description

The width of the shell is 5–6 mm. The height of the shell is 4 mm.

Notes and References

1. 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.
2. 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. page 878, figs. 29–31.
3. 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 20–21, plate 2, fig. 1, 3.