Kingdom Animalia Clade Heterobranchia Clade Panpulmonata Scientific name Besla Rank Genus | Phylum Mollusca Clade Euthyneura Superfamily Pyramidelloidea Higher classification Pyramidellidae | |
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Similar Pyramidellidae, Parthenina, Pyramidella, Gastropods, Chrysallida | ||
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Besla is a small genus of miniature sea snails, pyramidellid gastropod mollusks in the family Pyramidellidae within the tribe Chrysallidini (sensu taxonomy by Bouchet & Roctroi, 2005).
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Taxonomy
The synonymy of Parthenina Bucquoy, Dautzenberg & Dollfus, 1883 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 .
Life habits
Very little is known about the biology of the members of this genus. As is true of most members of the Pyramidellidae sensu lato, they are most likely to be ectoparasites.
Species
There are twelve known species within the genus Besla, these include: