Pomatiopsidae
Pomatiopsidae is a family of small, mainly freshwater snails, that have gills and an operculum, aquatic gastropod mollusks in the superfamily Truncatelloidea.
Pomatiopsidae are well known as intermediate hosts of Asian schistosomes.
Distribution
Species in the family Pomatiopsidae occur worldwide. The generic diversity of Pomatiopsinae is particularly high in the Japanese Archipelago, where four of the eight genera, including two endemics, are recorded. The subfamily Triculinae radiated as aquatic snails in freshwater habitats in Southeast Asia.File:Pomatiopsidae map.svg|left|thumb|upright=3.0|Approximate distribution map of Pomatiopsidae.
Notes: Distribution of Tomichia includes also Central Africa,
Cecina has eight species.
Description
The American malacologist William Stimpson first defined this taxon as Pomatiopsinae in 1865. Stimpson's diagnosis reads as follows:Subfamilies
The family Pomatiopsidae consists of 2 subfamilies that follows classification by Davis :- Subfamily Pomatiopsinae Stimpson, 1865 - synonyms: Hemibiinae Heude, 1890; Tomichiinae Wenz, 1938; Coxiellidae Iredale, 1943; Oncomelaniidae Salisbury & Edwards, 1961; Cecininae Starobogatov, 1983
- Subfamily Triculinae Annandale, 1924
- * tribe Triculuni Annandale, 1924 - synonym: Delavayidae Annandale, 1924
- * tribe Jullieniini Davis, 1979
- * tribe Lacunopsini Davis, 1979
- * tribe Pachydrobiini Davis & Kang, 1990
Genera
Genera within the family Pomatiopsidae include:- Spiripockia Simone, 2012
- Blanfordia Adams, 1863
- Cecina A. Adams, 1861
- Coxiella E. A. Smith, 1894: belongs in the family Tomichiidae
- Floridiscrobs Pilsbry and McGinty, 1949
- Fukuia Abbott & Hunter, 1949
- Hemibia Heude, 1890
- † Paraprososthenia Annandale, 1919
- Saduniella Brandt, 1970 - with the only species Saduniella planispira Brandt, 1970
- Lacunopsis Deshayes, 1876 - type genus of the tribe Lacunopsini
- Gammatricula Davis & Liu in Davis, Liu & Chen, 1990
- Halewisia Davis, 1979 - with the only species Halewisia expansa
- Jinghongia Davis in Davis & Kang, 1990
- Neotricula Davis in Davis, Subba Rao & Hoagland, 1986
- Pachydrobia Crosse & P. Fischer, 1876 - type genus of the tribe Pachydrobiini
- Robertsiella Davis & Greer, 1980
- Wuconchona Kang, 1983
- Rehderiella Brandt, 1974 - type genus of the taxon Rehderiellinae
Ecology
Pomatiopsidae invaded freshwater habitats from marine ones in one or in two independent lineages. They also invaded terrestrial habitats from freshwater habitats in two independent lineages.
| Genus | Number of species | Habitat |
| Blanfordia | 3 | terrestrial |
| Cecina | 8 | littoral of the sea |
| Coxiella | 10 | saline lakes |
| Fukuia | 3 | terrestrial and freshwater, amphibious, often arboreal |
| "Fukuia" ooyagii - unassigned to genus | 1 | freshwater |
| Hemibia | ?? | ?? |
| Idiopyrgus | 1-3 species | freshwater |
| Oncomelania | 2 | freshwater, marshy ground, seasonally amphibious |
| Pomatiopsis | 4 | marshy ground, amphibious |
| Tomichia | 11 | freshwater, brackish, saline lakes |
| Delavaya | ? | ? |
| Fenouilia | ? | freshwater |
| Lithoglyphopsis | ? | ? |
| Tricula | 15-20+ | freshwater |
| Hubendickia | 16 | ? |
| Hydrorissoia | 7 | ? |
| Jullienia | 10 | ? |
| Karelainia | 4 | ? |
| Kunmingia | ? | ? |
| Neoprososthenia | ? | ? |
| Pachydrobiella | 1 | ? |
| † Paraprososthenia | fossil, freshwater lake beds | |
| Saduniella | 1 | ? |
| Lacunopsis | 12 | ? |
| Gammatricula | 4 | ? |
| Halewisia | 1 | ? |
| Jinghongia | ? | ? |
| Neotricula | 2 | freshwater |
| Pachydrobia | 10 | ? |
| Robertsiella | 3 | freshwater, streams |
| Wuconchona | ? | ? |
| Rehderiella | ? | ? |
| Spiripockia | 1 | cavernicolous |