Pila pesmei

Pila pesmei
Conservation status
Least Concern  (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Architaenioglossa
Family:	Ampullariidae
Genus:	Pila
Species:	P. pesmei
Binomial name
Pila pesmei (Morlet, 1889)
Synonyms
Ampullaria beginiMorlet, 1889 (junior synonym) Ampullaria pesmeiMorlet, 1889 (original combination) Ampullaria turbinis var. erythrochilaDautzenberg & H. Fischer, 1906 Pachylabra pesmei(Morlet, 1889) superseded combination

Pila pesmei is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails. ^[1]

Description

The height of the shell attains 30 mm, its diameter 20 mm.

(Originally described in Latin) The shell is narrowly rimmed, turbinate, and globose, appearing bluish-pink and shining. It is marked with somewhat rugose, irregular growth striae and very delicate spiral striae, and it is adorned with narrow, chestnut, sometimes confluent spiral zones. The spire is obtuse.

The shell comprises 4.5 convex whorls. These are slightly depressed above and separated by a subcanaliculate suture. The first two whorls are smooth and depressed; the body whorl equals two-thirds of the shell's length. The umbilicus is narrow, with the columellar margin partly covered. The aperture is oval-oblong, slightly angular at the base, and appears yellowish-orange internally, brown-zoned. The margins are joined by a thick, yellowish callus. The columellar margin is somewhat rectilinear and slightly reflexed externally. The outer lip is arched, yellowish, and simple. ^[2]

Distribution

This species occurs in Cambodia, Myanmar and Thailand.

References

1. Pila pesmei(Morlet, 1889) . 3 June 2025. Retrieved through: World Register of Marine Species .
2. This is an extremely variable species, primarily distinguished from others in this genus by the thick, yellow or orange lip of its peristome. Morlet, L. (1889). "Catalogue des coquilles recueillies, par M. Pavie, dans le Cambodge et le Royaume de Siam, et description d'espèces nouvelles". Journal de Conchyliologie. 37 (2): 185. Retrieved 3 June 2025. This article incorporates text from this source, which is in the public domain .

External links

• Dautzenberg, P. & Fischer, H. (1906). "Liste des Mollusques récoltés par M. H. Mansuy en Indo-Chine et au Yunnan et decription d'espèces nouvelles". Journal de Conchyliologie. 53 (4): 428. Retrieved 3 June 2025.
• Ng, T. H.; Annate, S.; Jeratthitikul, E.; Sutcharit, C.; Limpanont, Y.; Panha, S. (2020). "Disappearing apple snails (Caenogastropoda: Ampullariidae) of Thailand: a comprehensive update of their taxonomic status and distribution". Journal of Molluscan Studies.
• Brandt, R.A.M. (1974). "The non-marine aquatic Mollusca of Thailand" (PDF). Archiv für Molluskenkunde. 105 (i–iv): 51.
• MNHN - Museum national d'Histoire naturelle: image