Cerastidae
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| Wenz , 1923 |
The Cerastidae (syn. Pachnodidae ) are a family of land-living snails from the suborder of the land snails (Stylommatophora). It currently comprises around 130 species living in the tropics and subtropics.
features
The casings are right-hand wound and conical, the cone is of medium height, more rarely the casings are upwardly conical. The size ranges from about 1 cm to just over 5 cm. The cases are usually white to light brown in color and have up to five darker bands or a zigzag pattern. The mouth is mostly toothless, only in the genus Passamaella there is a columellar tooth and a tooth-like depression in the palate area of the housing (palatal area). The mouth edge is often simple, seldom turned over, but mostly not thickened. The shell can be thin or thick. The surface is often smooth or only slightly ornamented with strips of growth, more rarely also strong ribs. In the male part of the genital apparatus, the flagellum is missing , as is a blind sack on the epihallus (caecum). The penis usually has a short, conical or worm-shaped process. The vagina is more or less swollen and usually lined with a spongy tissue. The sperm library is short and mostly sessile. If there is a stalk, it is without a diverticulum .
Geographical distribution, occurrence and way of life
The species in the family live in the tropical and subtropical regions of sub-Saharan Africa, southern Arabia, Socotra, the Seychelles, Madagascar, India, Sri Lanka, Thailand, northern Australia, and New Guinea. The original occurrence on St. Helena is uncertain.
Systematics
Schileyko (1998) and other authors used the name Pachnodidae for this family, since the type genus Cerastidae, Cerastus Martens in Albers, was allegedly preoccupied in 1860 by Cerastus Dejean in 1821. However, this name is a nomen nudum and nomenclature is not available. With that, however, Cerastus Martens in Albers, 1860 and the surname Cerastidae based on it is the valid name for this taxon . The family currently includes the following genera:
- Family Cerastidae Wenz, 1923
- Genus Achatinelloides Nevill, 1878
- Genus Altenaia Zilch, 1972
- Genus Amimopina Solem, 1964
- Genus Apoecus Moellendorff, 1902
- Genus Archeorachis Schileyko, 1998
- Genus Cerastus Martens in Albers, 1860
- Genus Conulinus Martens, 1895
- Genus Eduardia Gude, 1914
- Genus Euryptyxis Fischer, 1883
- Genus Hoqia Neubert, 2005
- Genus Limicena Connolly, 1925
- Genus Microscintilla Neubert 2002
- Genus Nesiocerastus Van Mol & Coppois, 1980
- Genus Nesobia Ancey, 1887
- Genus Pachnodus Albers, 1860
- Genus Paracerastus Thiele, 1933
- Genus Passamaella Pfeiffer, 1877
- Genus Pleurorhachis Connolly, 1939
- Genus Polychordia Connolly, 1941
- Genus Rachis Albers, 1850
- Genus Rachispeculum Iredale, 1933
- Genus Rhachidina Thiele, 1911
- Genus Rhachistia Connolly, 1925
- Genus Soqena Neubert, 2005
- Genus Zebrinopsis Thiele, 1931
swell
Individual evidence
- ↑ Sutcharit, Chirasak, Fred Naggs & Somsak Panha 2010: A first record of the family Cerastidae in Thailand, with a description of a new species (Pulmonata: Orthurethra: Cerastidae). The Raffles Bulletin of Zoology 58 (2): 251–258 PDF ( Memento of the original from February 10, 2012 in the Internet Archive ) Info: The archive link was automatically inserted and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ^ W. Kobelt and O. von Möllendorff: Catalog of the family Buliminidae. News bulletin of the German Malacological Society, 35: 36-60, Frankfurt / M. 1902 Online at archive.org
- ↑ Eike Neubert: The continental malacofauna of Arabia and adjacent areas, IV. Revision of the family Cerastidae in the Soqotran Archipelago, I: The genus Passamaella L. Pfeiffer 1877, with description of a new genus and species. (Gastropoda: Pulmonata: Cerastidae). Archives for molluscology: International Journal of Malacology, 134 (1): 1-21, 2005 doi : 10.1127 / arch.moll / 0003-9284 / 134 / 001-021
- ↑ Eike Neubert: The continental malacofauna of Arabia and adjacent areas, V. Revision of the family Cerastidae in the Soqotran Archipelago, II: The genera Achatinelloides G. Nevill 1878 and Microscintilla Neubert 2002, with description of a new genus and species (Gastropoda: Pulmonata: Cerastidae). Archives for molluscology: International Journal of Malacology, 134 (2): 223-259, 2005 doi : 10.1127 / arch.moll / 0003-9284 / 134 / 223-259
literature
- Philippe Bouchet & Jean-Pierre Rocroi: Part 2. Working classification of the Gastropoda . Malacologia, 47: 239-283, Ann Arbor 2005 ISSN 0076-2997
- Anatolij A. Schileyko: Treatise on Recent Terrestrial Pulmonate Molluscs. Part 2. Gastrocoptidae, Hypselostomatidae, Vertiginidae, Truncatellinidae, Pachnodidae, Enidae, Sagdidae. Ruthenica, Supplement 2 (2): 129-261, Moscow 1998 ISSN 0136-0027
