Pleurotomella gibbera Bouchet & Waren 1980

• Main Authors: Negri, Mauro Pietro, Corselli, Cesare
• Format: Text
• Language: unknown
• Published: Zenodo 2016
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Gastropoda; Neogastropoda; Raphitomidae; Pleurotomella; Pleurotomella gibbera; Eusebio; Morton; Northeast Atlantic
• Online Access: https://dx.doi.org/10.5281/zenodo.6082293; https://zenodo.org/record/6082293

Pleurotomella gibbera Bouchet & Warén, 1980 Fig. 16 a–c Pleurotomella gibbera (Jeffreys ms) Bouchet & Warén, 1980 (p. 41, figs. 93, 220). Pleurotomella gibbera Bouchet & Warén, 1980 ex Jeffreys ms.— Repetto et al. 2005 (p. 215, mid left fig.) Pleurotomella gibbera Bouchet & Warén, 1980 — De Frias Martins et al. 2009 (p. 65, figs. 242–244). Diagnostic characters . Fusiform shell; spire whorls angular; concave subsutural shelf; oval aperture; moderately long siphonal canal; deep U-shaped anal sinus; 10 rounded and rather prominent collabral ribs per whorl; thin spiral cords increasing in number by intercalation during growth; blunt nodes at the intersections of ribs and cords. Protoconch: broadly conical; 5.5 whorls; diameter about 790 µm (protoconch I: 190 µm); height about 990 µm; first 1.5 whorls (protoconch I) with spirally connected T-shaped granules forming a square reticulated pattern; subsequent whorls (protoconch II) with sinuous collabral axial riblets and non-collabral prosocline riblets; the latter riblets absent in the adapical fourth, where only collabral riblets are present; spiral angulation on the last quarter whorl, with 2 additional spirals just before end of larval shell; transition to the teleoconch at deep sinusigera. Occurrence . Box-corer samples BC66 (1 specimen), BC72 (2); cores BC04 (1), BC21 (2), BC67 (1), BC72 (1). Maximum height: 4 mm. Distribution and habitat . Pleurotomella gibbera seems to have a restricted distribution from the Ibero- Moroccan Gulf and northwestern African waters to the western and central Mediterranean; it dwells on soft substrates in the 72–720 m depth interval (Bouchet & Warén 1980; Bouchet & Taviani 1992; de Frias Martins et al. 2009). Fossil record. None recorded. : 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 70, DOI: 10.11646/zootaxa.4186.1.1, http://zenodo.org/record/165288 : {"references": ["Bouchet, P. & Waren, A. (1980) Revision of the Northeast Atlantic bathyal and abyssal Turridae (Mollusca, Gastropoda). The Journal of Molluscan Studies, supplement 8, 1 - 119. http: // dx. doi. org / 10.1093 / mollus / 46. supplement _ 8.1", "Repetto, G., Orlando, F. & Arduino, G. (2005) Conchiglie del Mediterraneo: 1770 specie illustrate con distribuzione e frequenza. Amici del Museo \" Federico Eusebio \", Alba, 392 pp.", "De Frias Martins, A. M., Borges, J. P., Avila, S. P., Costa, A. C., Madeira, P. & Morton, B. (2009) Illustrated checklist of the infralittoral molluscs off Vila Franca do Campo. Acoreana, Supplement 6, 15 - 103.", "Bouchet, P. & Taviani, M. (1992) The Mediterranean deep-sea fauna: pseudopopulations of Atlantic species? Deep-Sea Research, 39 (2), 169 - 184. http: // dx. doi. org / 10.1016 / 0198 - 0149 (92) 90103 - z"]}