''Polypylis hemisphaerula'' is a species of
gastropods
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. ...
belonging to the family
Planorbidae
Planorbidae, common name the ramshorn snails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod molluscs. Unlike most molluscs, the blood of ram's horn snails contains iron-based hemoglobin inste ...
.
The species is found in Japan and Southeastern Asia.
References
{{Taxonbar, from=Q10914914
Planorbidae
Gastropods described in 1842