Sagdidae
| Sagdidae | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name of the superfamily | ||||||||||||
| Sagdoidea | ||||||||||||
| Pilsbry , 1894 | ||||||||||||
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| Sagdidae | ||||||||||||
| Pilsbry , 1894 |
The Sagdidae are a family of snails from the suborder of land snails (Stylommatophora). It is the only family of the superfamily Sagdoidea Pilsbry, 1894. The almost 80 species are geographically restricted to the Caribbean islands with a few exceptions.
features
The housings are flattened-conical, spherical to very flattened and lens-shaped. Some forms have housings with very thin shells and the housing tends to be reduced. The mouth edges are usually simple, rarely turned over slightly or somewhat thickened. The cases are mostly sparsely ornamented. The jaws are aulacognath, d. H. almost smooth with a few pits. One or more attachments attach to the penis in the hermaphroditic genital apparatus. An epiphallus is present; T. several flagella formed. The stem of the sperm library is relatively long.
Geographical distribution and way of life
The family or superfamily is based on the Caribbean islands. A genus also occurs in northern South America. Schileyko (1998) considers it possible that the genus Xenodiscula Pilsbry, 1919, does not belong to the Sagdidae, but to the superfamily Zonitoidea. Other genera with a few species also occur in southern Florida and possibly in Central America. They are exclusively herbivores that live mainly on the ground.
Systematics
According to the system of Bouchet & Rocroi (2005), the superfamily Sagdoidea contains only one, the eponymous family Sagdidae with four subfamilies. Schileyko (1998) ruled out a monotypical partial subordination ("infraorder"). Sagdoinei Schileyko & Starobogatov, 1988, hierarchically above the superfamily.
- Superfamily Sagdoidea Pilsbry, 1894
- Sagdidae family Pilsbry, 1894
- Subfamily Sagdinae Pilsbry, 1894
- Genus Hyalosagda Martens in Albers, 1860
- Genus Stauroglypta Baker, 1935
- Genus Meiophysema Baker, 1935
- Genus Proserpinula Martens in Albers, 1860
- Genus Volvidens Henderson, 1914
- Genus Xenodiscula Pilsbry, 1919
- Genus Corneosagda Muratov & Schileyko, 1998
- Genus Sagda Beck, 1937
- Genus Odontosagda Martens, 1860
- Genus Zaphysema Pilsbry, 1894
- Genus Aerotrochus Pilsbry, 1926
- Microsagda Baker genus , 1935
- Genus Lacteoluna Pilsbry, 1926
- Genus Vilitas Pilsbry, 1926
- Genus Hojeda Baker, 1926
- Genus Strialuna Pilsbry, 1926
- Subfamily Platysuccineinae Baker, 1940
- Genus Platysuccinea Ancey, 1881
- Subfamily Aquebaninae Baker, 1940
- Genus Aquebana Pilsbry, 1926
- Genus Exsuavitas Baker, 1939
- Genus Itzamna Pilsbry, 1926
- Yunqueinae Baker subfamily, 1961
- Genus Yunquea Baker, 1940
- Subfamily Sagdinae Pilsbry, 1894
- Sagdidae family Pilsbry, 1894
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 1. Achatinellidae, Amastridae, Orculidae, Strobilopsidae, Spelaeodiscidae, Valloniidae, Cochlicopidae, Pupillidae, Chondrinidae, Pyramidulidae . Ruthenica, Supplement 2 (1): 1-127, Moscow 1998 ISSN 0136-0027
