Pomacea scalaris

Pomacea scalaris is a species of freshwater snail of the Ampullariidae ("apple snails") family. It was described by Alcide d'Orbigny in 1835.^[1][2] It is found in Bolivia, Paraguay, Argentina, Brasil, and Uruguay.^[3] It is invasive in Taiwan. First documented in 1989, it was possibly introduced alongside Pomacea canaliculata illegally brought to the country for aquaculture.^[4]

Pomacea scalaris
Five views of a shell of P. scalaris form Argentina
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Architaenioglossa
Family:	Ampullariidae
Subfamily:	Pomaceinae
Genus:	Pomacea
Species:	P. scalaris
Binomial name
Pomacea scalaris (d'Orbigny, 1835)[1][2]
Synonyms
Ampullaria scalaris d'Orbigny, 1835 (original combination) Ampullaria angulata Jay, 1836 Ampullaria angulata Deshayes, 1850 (invalid: junior homonym of Ampullaria angulata Jay, 1836) Pomacea (Pomacea) scalaris (d'Orbigny, 1835)· accepted, alternate representation

Pomacea scalaris can grow to a shell length of at least 31 mm (1.2 in).^[4]

References

1. "Ampullaria scalaris d'Orbigny, 1835". Global Biodiversity Information Facility. Retrieved 2 October 2020.
2. 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. (2025). "Pomacea scalaris (d'Orbigny, 1835)". MolluscaBase. World Register of Marine Species. Retrieved 21 January 2025.
3. Cowie, R. H. & Thiengo, S. C. (2003). "The apple snails of the Americas (Mollusca: Gastropoda: Ampullariidae: Asolene, Felipponea, Marisa, Pomacea, Pomella): A nomenclatural and type catalog". Malacologia. 45 (1): 41–100.
4. Wu, Jing Ying; Wu, Yu Ting; Li, Min Ching; Chiu, Yuh Wen; Liu, Ming Yie & Liu, Li Lian (2011). "Reproduction and juvenile growth of the invasive apple snails Pomacea canaliculata and P. scalaris (Gastropoda: Ampullariidae) in Taiwan" (PDF). Zoological Studies. 50 (1): 61–68.

External links

• Simone, L. R. L. (2006). Land and Freshwater Molluscs of Brazil. Editora Grafíca Bernardi, FAPESP. São Paulo, 390 pp.
• MNHN, Paris: syntype