Pomatiopsidae is a family of small, mainly freshwater snails, (some also occur in other habitats) that have gills and an operculum, aquatic gastropod mollusks in the superfamily Truncatelloidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).
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 W. (1865). "Researches upon the Hydrobiinae and allied forms chiefly made upon materials in the museum of the Smithsonian Institution". Smithsonian Miscellaneous Collections 7(201): 1-59. page 4. Stimpson's diagnosis reads as follows:
Subfamilies The family Pomatiopsidae consists of 2 subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005) that follows classification by Davis (1979):Davis G. M. (1979). "The origin and evolution of the gastropod family Pomatiopsidae, with emphasis on the Mekong river Triculinae". Academy of natural Sciences of Philadelphia, Monograph 20: 1-120. . Subfamily Pomatiopsinae Stimpson, 1865 - synonyms: Hemibiinae Heude, 1890; Tomichiinae Wenz, 1938;Wenz W. A. (1938). Handbuch der Paläozoologie 6(1): 51, 63. Coxiellidae Iredale, 1943;Iredale T. (1943). The Australian Zoologist 10(2): 209. Oncomelaniidae Salisbury & Edwards, 1961; Cecininae Starobogatov, 1983 Subfamily Triculinae Annandale, 1924Annandale N. (1924). "Studies on Schistosomiasis japonica. Appendix A. The molluscan hosts of the human blood fluke in China and Japan, and species liable to be confused with them". American Journal of Hygiene, Monographic Series 3: 269-294, plate 26. page 276. tribe Triculuni Annandale, 1924 - synonym: Delavayidae Annandale, 1924Annandale N. (1924). Journal and Proceedings, Asiatic Society of Bengal new series 19(9): 403. tribe Jullieniini Davis, 1979 tribe Lacunopsini Davis, 1979 tribe Pachydrobiini Davis & Kang, 1990Davis G. M. & Kang Z.-B. (1990). "The genus Wuconchona of China (Gastropoda: Pomatiopsidae: Triculinae): anatomy, systematics, cladistics, and transmission of Schistosoma". Proceedings of the Academy of Natural Sciences of Philadelphia 142: 119-142.
Family-group name Rehderiellinae Brandt, 1974Brandt R. A. (1974). "The non-marine aquatic Mollusca of Thailand". Archiv für Molluskenkunde 105(1-4): 423 pp., 30 plates. page 70. is also in Pomatiopsidae, but it is not allocated in detail.
Genera Genera within the family Pomatiopsidae include:
Spiripockia Simone, 2012 (not allocated to a subfamily)
Subfamily Pomatiopsinae Blanfordia Adams, 1863 Cecina A. Adams, 1861WoRMS (2010). Cecina A. Adams, 1861. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=397033 on 2011-04-04 Coxiella E. A. Smith, 1894: belongs in the family Tomichiidae Floridiscrobs Pilsbry and McGinty, 1949 Fukuia Abbott & Hunter, 1949 Hemibia Heude, 1890 (species type: Oncomelania hupensis Gredler, 1881 Idiopyrgus Pilsbry, 1911Malek E. A. (1983). "The South American hydrobioid genus Idiopyrgus Pilsbry, 1911". The Nautilus 97(1): 16-20. - synonym: Aquidauania Davis, 1979: belongs in the family Tomichiidae Oncomelania Gredler, 1881 Pomatiopsis Tryon, 1862 - the type genus of the family Pomatiopsidae Tomichia Benson, 1851:Rosenberg, G. (2010). Tomichia Benson, 1851. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=405098 on 2011-04-04 belongs in the family Tomichiidae
Subfamily Triculinae - there are over 20 genera in Triculinae
tribe Triculuni Delavaya Heude, 1889 Fenouilia Heude, 1889 Lithoglyphopsis Thiele, 1928Davis G. M., Wilke T., Zhang Y., Xu X.-J., Qiu C.-P., Spolsky C., Qiu D.-C., Li Y., Xia M.-Y. & Feng Z. (1999). "Snail-Schistosoma, Paragonimus interactions in China: population ecology, genetic diversity, coevolution and emerging diseases". Malacologia 41(2): 355-377. Tricula Benson, 1843 - type genus of the tribe Triculuni
tribe Jullieniini Hubendickia Brandt, 1968 Hydrorissoia Bavay, 1895 Jullienia Crosse & P. Fischer, 1876 - type genus of the tribe Jullieniini Karelainia Davis, 1979 Kunmingia Davis & Kuo in Davis, 1981 Neoprososthenia Davis & Kuo in Davis, Kuo, Hoagland, Chen, Yang & Chen, 1984 Pachydrobiella Thiele, 1928 - with the only species Pachydrobiella brevis (Bavay, 1895) † Paraprososthenia Annandale, 1919 Saduniella Brandt, 1970 - with the only species Saduniella planispira Brandt, 1970
tribe Lacunopsini Lacunopsis Deshayes, 1876 - type genus of the tribe Lacunopsini
tribe Pachydrobiini Gammatricula Davis & Liu in Davis, Liu & Chen, 1990Wilke T., Davis G. M., Gong X. & Liu H. X. (2000). "Erhaia (Gastropoda: Rissooidea): phylogenetic relationships and the question of Paragonimus coevolution in Asia". American Journal of Tropical Medicine and Hygiene 62(4): 453-459. PDF . Halewisia Davis, 1979 - with the only species Halewisia expansa (Brandt, 1970) 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
Rehderiellinae is not allocated to a subfamily Rehderiella 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 (Blanfordia). 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.
+ Overview of diversity and habitat of genera in Pomatiopsidae: Genus Number of species Habitat Blanfordia 3 terrestrial Cecina 8 littoral of the sea Coxiella 10 (one of them extinct) 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 (at least) freshwater Pachydrobia 10 ? Robertsiella 3 freshwater, streams Wuconchona ? ? Rehderiella ? ? Spiripockia 1 cavernicolous
References This article incorporates public domain text from the reference and CC-BY-2.0 from the reference
External links
Stimpson W. (1865). "Researches upon the Hydrobiinae and allied forms chiefly made upon materials in the museum of the Smithsonian Institution". Smithsonian Miscellaneous Collections 7(201): 1-59. page 4 Davis G. M., Chen C.-E., Wu C., Kuang T.-F., Xing X.-G., Li L., Liu W.-J. & Yan Y.-L. (1992). "The Pomatiopsidae of Hunan, China (Gastropoda, Rissoacea)". Malacologia 34(1-2): 143-342.