Alcadia microstoma

Alcadia microstoma
	Shell of Alcadia microstoma (specimen at Naturalis Biodiversity Center)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Neritimorpha
Order:	Cycloneritida
Family:	Helicinidae
Genus:	Alcadia
Species:	A. microstoma
Binomial name
	Alcadia microstoma; (C. B. Adams, 1851)
Synonyms
	Alcadia (Palliata) microstoma (C. B. Adams, 1851) alternative representation; Helicina (Alcadia) microstoma C. B. Adams, 1851 superseded combination; Helicina microstoma C. B. Adams, 1851 (original combination);

Alcadia microstoma is a species of an operculate land snail, terrestrial gastropod mollusk in the family Helicinidae.^[1]

Description

(Original description) The shell is globose-conic and moderately thickened, with a brown coloration that shades off to a smoky white along the suture and the periphery of the body whorl. It features rather light growth striae, interspersed with a few spiral series of punctures. The apex is obtuse, and the spire's outlines are variably curvilinear. The shell has slightly fewer than five moderately convex whorls with a well-impressed suture. The body whorl is subplanulate beneath. The aperture is semi-elliptical, compressed above and below, and laterally dilated. The outer lip is sinuate, well-expanded, and reflected except at the extremities, with a slit that is rather wide but not very deep. ^[2]

Distribution

This species occurs in Jamaica.^[1]

References

^ ^a ^b ^c Alcadia microstoma (C. B. Adams, 1851). 30 July 2024. Retrieved through: World Register of Marine Species.
^ Adams, C.B. (1851). "Descriptions of new species and varieties of shells, which inhabit Jamaica". Contributions to Conchology. 8: 129–140. Retrieved 31 July 2024. This article incorporates text from this source, which is in the public domain.

External links

Wagner, A.J. (1907–1911). Die Familie der Helicinidae. In: Küster, H. C. & Kobelt, W., Eds., Systematisches Conchylien-Cabinet von Martini und Chemnitz, Neue Folge. Ersten Bandes, achtzehnte Abtheilung, zweiter Theil. Nürnberg: Bauer & Raspe. p. 51.
Conchology.be: image

[WoRMS-1] Alcadia microstoma (C. B. Adams, 1851). 30 July 2024. Retrieved through: World Register of Marine Species.

[2] Adams, C.B. (1851). "Descriptions of new species and varieties of shells, which inhabit Jamaica". Contributions to Conchology. 8: 129–140. Retrieved 31 July 2024. This article incorporates text from this source, which is in the public domain.

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