- Source: Achatinellidae
Achatinellidae is a family of tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Pupilloidea.
Taxonomy
It was previously the only family in the superfamily Achatinelloidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). It is now classified under the superfamily Pupilloidea.
The family Achatinellidae represents a diverse adaptive radiation. All species of tree-snail in Hawaii are believed to have come from a single ancestral snail. How that ancestral snail made the 3,800 kilometres (2,400 mi) trip across the ocean is unknown. A longstanding theory is that a bird carried a notably smaller ancestor across the ocean and dropped it on the islands, as bird mediated dispersal has been documented in other snail species. Alternative theories include that it floating across the ocean on a mat of debris, or that it island hopped across the Pacific in a combination of the theories.
Subfamilies in the family Achatinellidae include:
Achatinellinae Gulick, 1873 - synonym: Helicterinae Pease, 1870 (inv.)
Auriculellinae Odhner, 1921
Elasmatininae Iredale, 1937
tribe Elasmatinini Iredale, 1937 - synonyms: Strobilidae Zilch, 1959 (n.a.); Pitysinae Cooke & Kondo, 1961
tribe Antonellini Cooke & Kondo, 1961
tribe Tubuaiini Cooke & Kondo, 1961
Pacificellinae Steenberg, 1925
tribe Pacificellini Steenberg, 1925 - synonym: Tornatellinoptini Cooke & Kondo, 1961
tribe Lamellideini Cooke & Kondo, 1961
Tekoulininae Solem, 1972
Tornatellidinae Cooke & Kondo, 1961
tribe Tornatellidini Cooke & Kondo, 1961
tribe Tornatellariini Cooke & Kondo, 1961
Tornatellininae Sykes, 1900
tribe Tornatellinini Sykes, 1900
tribe Elasmiatini Kuroda & Habe, 1949
Anatomy
In this family, the number of haploid chromosomes lies between 16 and 25 (according to the values in the table).
Distribution
This family of snails occurs widely in the Pacific islands. They are at their most diverse in the Hawaiian group.
Genera
Genera in the family Achatinellidae include:
Achatinellinae
Achatinella Swainson, 1828 - type genus of the subfamily Achatinellinae
Partulina Pfeiffer, 1854
Perdicella Pease, 1870
Newcombia Pfeiffer, 1854
Auriculellinae
Auriculella Pfeiffer, 1854 - type genus of the subfamily Auriculellinae
Elasmatininae
tribe Elasmatinini
tribe Antonellini
tribe Tubuaiini
Tubuaia
Pacificellinae
tribe Pacificellini
Tornatellinops Pilsbry & Cooke, 1915
tribe Lamellideini
Lamellidea Pilsbry, 1910
Tekoulininae
Tekoulina Solem, 1972
Tornatellidinae
tribe Tornatellidini
Tornatellides Pilsbry, 1910 - type genus of the tribe Tornatellidini
tribe Tornatellariini
Tornatellaria Pilsbry, 1910 - type genus of the tribe Tornatellariini
Tornatellininae
tribe Tornatellinini
Tornatellina L. Pfeiffer, 1842 - type genus the tribe Tornatellinini
tribe Elasmiatini
Elasmias Pilsbry, 1910 - type genus of the tribe Elasmiatini
unsorted
Gulickia Cooke, 1915
† Hotumatua Kirch, Christensen & Steadman, 2009 - Hotumatua anakenana Kirch, Christensen & Steadman, 2009
Tornatellinops Pilsbry, 1915
Tornelasmias Iredale, 1944
References
External links
Media related to Achatinellidae at Wikimedia Commons