Sierraia
Encyclopedia
Sierraia is a genus
of freshwater snail
s with an operculum
, aquatic
prosobranch gastropod mollusks in the family Bithyniidae
.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of freshwater snail
Freshwater snail
A freshwater snail is one kind of freshwater mollusc, the other kind being freshwater clams and mussels, i.e. freshwater bivalves. Specifically a freshwater snail is a gastropod that lives in a watery non-marine habitat. The majority of freshwater gastropods have a shell, with very few exceptions....
s with an operculum
Operculum (gastropod)
The operculum, meaning little lid, is a corneous or calcareous anatomical structure which exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails...
, aquatic
Aquatic animal
An aquatic animal is an animal, either vertebrate or invertebrate, which lives in water for most or all of its life. It may breathe air or extract its oxygen from that dissolved in water through specialised organs called gills, or directly through its skin. Natural environments and the animals that...
prosobranch gastropod mollusks in the family Bithyniidae
Bithyniidae
Bithyniidae is a family of small freshwater snails with an operculum, aquatic gastropod molluscs in the clade Littorinimorpha.Their minute shell is often colored. They are characterized by a calcareous operculum, a lobe on the upper surface of the neck. The ctenidium, the respiratory gill-comb, is...
.
Species
Species in the genus Sierraia include:- Sierraia expansilabrum Brown, 1988 - vulnerable, from Sierra Leone
- Sierraia leonensis Connolly, 1929 - vulnerable, from Sierra Leone
- Sierraia outambensis Brown, 1988 - critically endangered, from Sierra Leone
- Sierraia whitei Brown, 1988 - least concern, from Sierra Leone