Besla
From Wikipedia, the free encyclopedia
| Besla | |
|---|---|
 | |
| Apertural view of the shell of Besla convexa | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subcohort: | Panpulmonata |
| Superfamily: | Pyramidelloidea |
| Family: | Pyramidellidae |
| Genus: | Besla Dall & Bartsch, 1904 |
| Type species | |
| Odostomia convexa Carpenter, 1857 | |
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).[1]
The synonymy of Parthenina (Bucquoy, Dautzenberg & Dolfus, 1883) with Besla (Doll & 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 at nearly 180° (Type C); therefore, these divergent characteristics suggest that Besla and Parthenina are unrelated and that their teleoconch sculpture may be convergent.[2]
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.