Liostomia
| Main Authors: | Negri, Mauro Pietro, Corselli, Cesare |
|---|---|
| Format: | info publication-taxonomictreatment Journal |
| Terbitan: |
, 2016
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6082317 |
Daftar Isi:
- Liostomia sp. Fig. 17 p–r Diagnostic characters. Conical-ovate shell; whorls weakly convex; drop-shaped aperture; small umbilical chink; outer surface with sinuous growth lines only. Protoconch: heterostrophic, coaxially immersed (intorted); about 1.25 visible whorls; diameter about 300 μm; surface smooth; transition to the teleoconch marked by a simple, thin lip. Remarks. The present specimens are attributed to the genus Liostomia G. O. Sars, 1878 on the basis of the “ type C” protoconch (sensu Van Aartsen 1987) and the absence of a columellar tooth or fold. Liostomia sp. differs from the related L. clavula (Lovén, 1846) and L. afzelii Warén, 1991 [b], primarily in terms of shell shape (it is distinctly conical) and overall dimensions (it needs one more whorl to reach a comparable heigth). The northern Atlantic L. eburnea (Stimpson, 1851) is also similar, but it has slenderer shell and orthocline growth lines. Occurrence. Box-corer sample BC72 (2 specimens); cores BC04 (1), BC05 (1). Maximum height: 2.5 mm. Distribution and habitat. Liostomia species are parasites (host unknown; cf. Høisaeter 2014); they occur in both the northern Atlantic and the Mediterranean, from infralittoral to bathyal depths (Van Aartsen 1987; Van Aartsen et al. 1998; Schander et al. 2003; Petersen 2004; Høisaeter 2009).
- Published as part of Negri, Mauro Pietro & Corselli, Cesare, 2016, Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy), pp. 1-97 in Zootaxa 4186 (1) on page 77, DOI: 10.11646/zootaxa.4186.1.1, http://zenodo.org/record/165288