''Ruthvenia'' is a genus 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 ...
s,
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
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...
s in the family
Charopidae. These snails are restricted to
South India
South India, also known as Dakshina Bharata or Peninsular India, consists of the peninsular southern part of India. It encompasses the Indian states of Andhra Pradesh, Karnataka, Kerala, Tamil Nadu, and Telangana, as well as the union territo ...
and
Sri Lanka
Sri Lanka (, ; si, ශ්රී ලංකා, Śrī Laṅkā, translit-std=ISO (); ta, இலங்கை, Ilaṅkai, translit-std=ISO ()), formerly known as Ceylon and officially the Democratic Socialist Republic of Sri Lanka, is an ...
.
Six species are recognized.
Description
Shell is trochoid to lentiform with compressed structure. Shell color varies from light-comeous to colorless. There are 1 or 2 cord-like keels on last whirl. Aperture narrow with slightly oblique shape. Umbilicus funnel-like and broad.
Species
* ''
Ruthvenia biciliata''
(Pfeiffer 1854)
* ''
Ruthvenia bicincta''
(Bavay & Dautzenberg, 1912)
* ''
Ruthvenia caliginosa''
(Sykes 1898)
* ''
Ruthvenia clathratula''
(L. Pfeiffer, 1850)
* ''
Ruthvenia clathratuloides''
(Gude, 1897)
* ''
Ruthvenia retifera''
(L. Pfeiffer, 1845)
References
{{Charopidae-stub