Vertigo dedecora

Vertigo dedecora is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae.^[1][2]

Vertigo dedecora
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Family:	Vertiginidae
Subfamily:	Vertigininae
Genus:	Vertigo
Species:	V. dedecora
Binomial name
Vertigo dedecora {Pilsbry, 1902}
Synonyms
Nesopupa dedecora Pilsbry, 1902 · unaccepted (original combination) Nesopupa tamagonari Pilsbry, Hirase, 1904 Ptychalaea dedecora (Pilsbry, 1902) Vertigo (Vertilla) dedecora (Pilsbry, 1902) · alternate representation

This species is vulnerable.

Was erroneously placed in genus Ptychalaea.

Description

The length of the shell attains 1.6 mm, its diameter 1 mm.

(Original description) The shell is exceedingly small, obesely oval, dark red-brown and faintly striate. It contains 4¾ convex whorls. The body whorl swells in a very conspicuous crest some distance behind the aperture, and is grooved at the position of the upper palatal fold. The aperture is squarish and well rounded below. The brown outer lip is expanded. The parietal lamella is long and strong;. The angular lamella is well developed and not united with the parietal. The small columellar lamella is deeply placed. The basal is fold small, close to the columella. The lower palatal fold is very small and deeply situated. The upper palatal is large and prominent All the teeth are whitish.^[3]

Distribution

This species is endemic to Japan.