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.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, 2012Subfamily PomatiopsinaeBlanfordia Adams, 1863Cecina A. Adams, 1861Coxiella E. A. Smith, 1894: belongs in the family Tomichiidae Floridiscrobs Pilsbry and McGinty, 1949 Fukuia Abbott & Hunter, 1949Hemibia Heude, 1890
- † Paraprososthenia Annandale, 1919Saduniella Brandt, 1970 - with the only species Saduniella planispira Brandt, 1970
tribe PachydrobiiniGammatricula Davis & Liu in Davis, Liu & Chen, 1990Halewisia Davis, 1979 - with the only species Halewisia expansa Jinghongia Davis in Davis & Kang, 1990Neotricula Davis in Davis, Subba Rao & Hoagland, 1986Pachydrobia Crosse & P. Fischer, 1876 - type genus of the tribe PachydrobiiniRobertsiella Davis & Greer, 1980Wuconchona Kang, 1983
Rehderiellinae is not allocated to a subfamilyRehderiella Brandt, 1974 - type genus of the taxon Rehderiellinae
Ecology
The Pomatiopsidae have various life habits: aquatic, amphibious, littoral, halophilic, cavernicolous and even terrestrial. Terrestrial taxa occur only on the Japanese Archipelago located in East Asia. Tomichia and Coxiella include several halophilic species occurring on saline lakes.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 |