''Vertigo bollesiana'',

common name In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often contrast ...

the delicate vertigo snail, is a species of air-breathing

land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as ...

, a terrestrial

pulmonate Pulmonata or pulmonates, is an informal group (previously an order, and before that a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includ ...

gastropod 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. T ...

mollusk in the family Vertiginidae, the whorl snails. MolluscaBase eds. (2023). MolluscaBase. Vertigo bollesiana (E. S. Morse, 1865). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1328487 on 2023-02-08

Description

(Original description) The shell is minutely perforate, cylindrical ovate, delicately striated, subtranslucent. The apex obtuse. The suture is well defined. The shell contains four subconvex

whorl A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral ...

s. The aperture is suborbicular, somewhat flattened on its outer edge. It contains five teeth, one prominent and rather curved on the parietal margin, two similar in form, the lower one the smaller, on the columellar margin, and two slightly elevated lamelliform teeth within and at the base. The peristome is subreflected and thickened.

Radula The radula (, ; plural radulae or radulas) is an anatomical structure used by molluscs for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food ...

: Lingual formula 88,-12-1-12 . The central and lateral plates are notched at the outer posterior corners. The central plate is square, widening posteriorly, armed with three minute denticles with the central one largest. The laterals have two minute denticles apart with the outer denticle nearly obsolete. The uncine is scarcely notched. Animal: The dorsal portion of body is light gray, the disk nearly white. The buccal plate is of the same width throughout, slightly rounded at the ends. The cutting edge has no projections and is finely striated. Morse, E. S. (1865). Descriptions of new species of Pupadae. Annals of the Lyceum of Natural History of New York. 8: 207-212
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Distribution

This species can be found under dead leaves and on bark in hard wood groves throughout Maine; also in New Hampshire, Massachusetts, New York and Norfolk, Virginia.

References

* Nekola, J.C.; Chiba, S.; Coles, B.F.; Drost, C.A.; Proschwitz, T. von; Horsák, M. (2018). A phylogenetic overview of the genus Vertigo O. F. Müller, 1773 (Gastropoda: Pulmonata: Pupillidae: Vertigininae). Malacologia. 62(1): 21–161.

External links

Sterki, V. (1890). On some northern Pupidae, with descriptions of new species. The Nautilus. 3(11): 123-126
{{Commons category bollesiana Gastropods described in 1865