Round rocksnail
| Leptoxis ampla | |
|---|---|
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| Lectotype of Leptoxis ampla (MCZ 161803) | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Caenogastropoda clade Sorbeoconcha |
| Superfamily: | Cerithioidea |
| Family: | Pleuroceridae |
| Genus: | Leptoxis |
| Species: | L. ampla |
| Binomial name | |
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Leptoxis ampla (Anthony, 1855) |
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| Synonyms | |
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Anculosa ampla Anthony, 1855 (original combination) |
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Anculosa ampla Anthony, 1855 (original combination)
Leptoxis ampla, common name the round rocksnail, is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae.
This species is endemic to the United States, specifically the state of Alabama. The snail has been listed as threatened on the United States Fish and Wildlife Service list of endangered species since 28 October 1998.
Leptoxis ampla is a vulnerable species according to the IUCN Red list.
The round rocksnail is a pleurocerid snail and its shell grows to about 20 mm (0.8 in) in length. The shell is subglobose, with an ovately rounded aperture. The body whorl is shouldered at the suture, and may be ornamented with folds or plicae. Color may be yellow, dark brown, or olive green, usually with four entire or broken bands.
Lydeard et al. (1997) found slight differences in DNA sequencing between the painted rocksnail and the round rocksnail, and considered them to be sister species. Following analysis by allozyme electrophoresis on these same species, Dillon speculated that the two species represented isolated populations belonging to a single species. The two species are geographically separated, with the painted rocksnail inhabiting Coosa River tributaries, and the round rocksnail inhabiting the Cahaba River drainage. Both species are currently recognized by the malacological community.
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Wikipedia