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Parthenina
''Parthenina'' is a genus of very small sea snails, pyramidellid gastropod mollusks or micromollusks. 〔 Gofas, S.; Bouchet, P. (2015). Parthenina Bucquoy, Dautzenberg & Dollfus, 1883. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=565557 on 2015-04-03 〕
This genus is currently placed in the subfamily Chrysallidinae of the family Odostomiidae. The name ''Parthenia'' was created by Lowe in 1840 for the species in this group, but had to be replaced since it was preoccupied by a name for a group of dipterans described by Roubineau-Desvoidy in 1830.
==Shell description==
In the original description Bucquoy, Dautzenberg & Dollfus (1833)〔 states (in English translation) that ''Partnenina'' is a type of ''Odostomia'' with a mesh-like surface or with longitudinal ridges. Between these ridges there are series of spiral ridges. Many of the European species in the genus have for a long time been wrongly placed in the genus ''Chrysallida'', but Schander et al. (2003) showed that they should indeed be placed in the genus ''Parthenina''. This separation was followed by Pimenta et al. (2009) for Brazilian species.
The synonymy with ''Besla'' Dall & Bartsch, 1904 proposed by Micali et al. (2012) is debatable. The type species of ''Besla'' has a protoconch axis at 90° with that of teleoconch ("type A protoconch") whereas that of ''Parthenina'' is tilted nearly 180° ("type C"); this important character suggests that they are unrelated and that their teleoconch sculpture may be convergent 〔Micali P., Nofroni I. & Perna E. (2012) Parthenina alesii n. sp. from Eastern Mediterranean, and notes on Parthenina dantarti (Peñas & Rolán in Peñas, Rolán & Ballesteros, 2008) (Gastropoda: Heterobranchia: Pyramidellidae). Bollettino Malacologico 48(1): 69-72.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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