Amerianna papyracea
| Amerianna papyracea | |
|---|---|
 | |
| From its original 1874 description | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Superorder: | Hygrophila |
| Family: | Planorbidae |
| Genus: | Amerianna |
| Species: | A. papyracea |
| Binomial name | |
| Amerianna papyracea (G. B. Sowerby II, 1874)[1] | |
| Synonyms[2] | |
| |
Amerianna papyracea, or the paper physa, is a species of freshwater snail in the family Planorbidae. It is endemic to New Guinea and one small island just off the coast.
Taxonomy
Amerianna papyracea was first described by George Brettingham Sowerby II in 1874, though it was originally given the name Physa papyracea.[1][2] It was not given a type locality, meaning the location of its discovery is unknown.[1]
Description
Amerianna papyracea has a nearly cylindrical shell with a short spire. The columella (central axis of the shell) possesses a twisting structure called a plait, though it is barely noticeable. Very small lines called striae may be present. The shell is notably very thin.[1]
Distribution and habitat
This species is endemic to the island of New Guinea,[2][3] with one additional location in Lake Wisdom on the nearby Long Island. Within this lake, individuals were found on algae-covered rocks, usually at depths of 0 to 6 m (0 to 20 ft).[4]
References
- 1 2 3 4 Sowerby, G. B. (1874). Conchologia Iconica: Illustrations of the shells of molluscous animals. L. Reeve & Co. p. 634. doi:10.5962/bhl.title.8129. LCCN 50044613. OCLC 2304849.
- 1 2 3 Köhler, Frank (2020). Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O (eds.). "Amerianna papyracea (G. B. Sowerby II, 1874)". MolluscaBase. World Register of Marine Species. Retrieved 12 July 2026.
- ↑ Starmühlner, von Ferdinand (1976). "Beiträge zur Kenntnis der Süßwasser-Gastropoden pazifischer Inseln" (PDF). Annals of the Natural History Museum Vienna (in German). 80: 610–612, 642. Archived from the original (PDF) on 29 August 2024 – via Zobodat.
- ↑ Ball, E.; Glucksman, J. (1978). "Limnological studies of Lake Wisdom, a large New Guinea caldera lake with a simple fauna". Freshwater biology. 8: 463. doi:10.1111/j.1365-2427.1978.tb01468.x – via Wiley Online Library.