Acteocina fusiformis A. Adams, 1850

Qi, Lu, Xu, Biyang, Kong, Lingfeng & Li, Qi, 2023, Checklist of the micromolluscs in the intertidal zone of the Yellow Sea and Bohai Sea, China, Biodiversity Data Journal 11, pp. 105444-105444 : 105444

Acteocina fusiformis A. Adams, 1850

Native status

Found on sandy and mud bottoms in intertidal seagrass bed.

Distribution

Bohai Sea in China, Japan, South African.

Notes

Shell cylindrical or fusiform, spire conspicuous, apex papillated, suture channelled, columella callous, with a single fold in the genus Acteocina Gray, 1847 ( Adams 1850). The division of the genus Acteocina is problematic in systematics. Okutani (2017) divided it into the family Cylichnidae , but it was divided into Tornatinidae in WoRMS.

Diagnosis

Shell minute (2.5 ± 0.15 mm in length, 0.9 ± 0.08 mm in width), cylindrical to fusiform, thick, solid, with fine and indistinct spiral grooves (Fig. 13 ). Surface white, smooth, slightly corroded. Whorls about 3, spire small, body whorl was slightly constricted on the upper part. Shoulder acutely angulated. Protoconch prominently projecting. Suture oblique. Columella stout, with a fold above.

Figures

Figure 13. Acteocina fusiformis A. Adams, 1850.