Rhodacmea

Rhodacmea
Two views of a shell of Rhodacmea filosa
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Superorder:	Hygrophila
Family:	Planorbidae
Genus:	Rhodacmea Walker, 1917 [1]
Diversity [2]
3 species

Rhodacmea is a genus of small freshwater snails or limpets, aquatic gastropod mollusks in the family Planorbidae, the ram's horn snails and their allies. ^[2]

Rhodacmea is the type genus of the subfamily Rhodacmeinae. ^[3]

Anatomy

These animals have a pallial lung, as do all pulmonate snails, but they also have a false gill or "pseudobranch". This serves as a gill, which is necessary as, in their non-tidal habitat, these limpets never reach the surface for air.

Species

Species in the genus Rhodacmea include:

• Rhodacmea elatior (Anthony, 1855) – domed ancylid ^[4]
• Rhodacmea filosa (Conrad, 1834) – wicker ancylid, ^[5] type species ^[1]
• Rhodacmea hinkleyi (Walker, 1908) ^[2]

References

1. Walker B. (1917). "A revision of the classification of the North American patelliform Ancylidae with descriptions of new species". The Nautilus 31(1): 1-10. page 5. plate 1-plate 3.
2. Ó Foighil D., Li J., Lee T., Johnson P., Evans R. & Burch J. B. (2011). "Conservation Genetics of a Critically Endangered Limpet Genus and Rediscovery of an Extinct Species". PLoS ONE 6(5): e20496. doi : 10.1371/journal.pone.0020496 .
3. Bouchet, Philippe; Rocroi, Jean-Pierre; Frýda, Jiri; Hausdorf, Bernard; Ponder, Winston; Valdés, Ángel & Warén, Anders (2005). "Classification and nomenclator of gastropod families". Malacologia . 47 (1–2). Hackenheim, Germany: ConchBooks: 1–397. ISBN   3-925919-72-4. ISSN   0076-2997.
4. Bogan, A.E. (1996). "Rhodacmea elatior". IUCN Red List of Threatened Species . 1996 e.T19669A9002012. doi: 10.2305/IUCN.UK.1996.RLTS.T19669A9002012.en .
5. Cordeiro, J. (2012). "Rhodacmea filosa". IUCN Red List of Threatened Species . 2012 e.T19670A2475285. doi: 10.2305/IUCN.UK.2012-1.RLTS.T19670A2475285.en .