Hygrophila (gastropod)
Hygrophila | |
---|---|
The larger of the two snails is Lymnaea stagnalis, family Lymnaeidae | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Heterobranchia |
Infraclass: | Euthyneura |
Superorder: | Hygrophila Férussac, 1822 |
Superfamilies | |
See text | |
Synonyms[1] | |
Basommatophora |
Hygrophila is a
The families in this clade are basically air-breathing freshwater snails including freshwater limpets. The three families with the greatest number of species are the Lymnaeidae (pond snails), the Planorbidae (ramshorn snails) and the Physidae (pouch or bubble snails). These are found in ponds, creeks, ditches, and shallow lakes nearly worldwide.
The snails in this clade have their eyes located at the base of their tentacles, rather than at the tips, as in the true land snails Stylommatophora. They have shells that are thin, translucent, and relatively colorless, and they lack an operculum.
Taxonomy
1997 taxonomy
In the older taxonomy of the Gastropoda (Ponder & Lindberg, 1997) these families were placed in the suborder Basommatophora.
2005 taxonomy
Hygrophila has been a clade in the informal group Basommatophora within the Pulmonata.[3]
Clade Hygrophila:
- Superfamily Chilinoidea Dall, 1870
- Family ChilinidaeDall, 1870
- Family LatiidaeHutton, 1882
- Family
- Superfamily AcroloxoideaThiele, 1931
- Family Acroloxidae Thiele, 1931
- Superfamily Lymnaeoidea Rafinesque, 1815
- Family Lymnaeidae Rafinesque, 1815
- Superfamily Planorboidea Rafinesque, 1815
- Family Planorbidae Rafinesque, 1815
- Family Physidae Fitzinger, 1833
Note: what was previously the family
2010 taxonomy
Basommatophora (
2020 taxonomy
A comprehensive molecular phylogenetic analysis of Hygrophila based on 3112 sites of the large subunit and 5.8S ribosomal RNA genes resulted in a proposal of a new taxonomic revision of the group.[4]
- Chilinoidea Dall, 1870
- Lymnaeoidea Rafinesque, 1815
- Synonyms
- Acroloxoidea Thiele, 1931: synonym of Lymnaeoidea Rafinesque, 1815
- Planorboidea Rafinesque, 1815: synonym of Lymnaeoidea Rafinesque, 1815
References
- ^ a b MolluscaBase eds. (2020). MolluscaBase. Hygrophila. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=382243 on 2020-12-14
- ^ .
- ISSN 0076-2997.
- .