Mangelia nuperrima ( Tiberi, 1855 )

Negri, Mauro Pietro & Corselli, Cesare, 2016, Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy), Zootaxa 4186 (1), pp. 1-97 : 68

Mangelia nuperrima ( Tiberi, 1855)

Fig. 15 e–h

Pleurotoma nuperrimum Tiberi, 1855 (p. 14, pl. 2, figs. 7–9).

Raphitoma nuperrimum Tiberi—Hidalgo 1917 (p. 586).

Raphitoma (Amblyacrum) nuperrima (Tiberi) — Nordsieck 1968 (p. 178, pl. 30, fig. 94.40).

Raphitoma nuperrima (Tiberi) — Di Geronimo & Panetta 1973 (p. 85, pl. 1, fig. 11).

Pleurotomoides (Acmaturris) nuperrimum (Tiberi, 1878) — Nordsieck 1977 (p. 62, pl. 21, fig. 164).

Mangelia nuperrima ( Tiberi, 1855) — Bouchet & Warén 1980 (p. 30, figs. 81, 215); Cossignani et al. 1992 (fig. 168); Giribet & Peñas 1997 (p. 72, figs. 52, 53); Repetto et al. 2005 (p. 208, mid left fig.).

Diagnostic characters. Ovately fusiform shell; spire whorls angular at the adapical third; aperture elongate; wide siphonal canal; shallow C-shaped anal sinus; 13–15 slightly opisthocline axial ribs per whorl; fine spiral threads (2 per whorl); pointed nodes at the intersection of ribs and threads; dense microsculpture of spiral rows of granules throughout. Protoconch: low conical; 3.6-3.7 whorls; diameter about 860 µm (protoconch I: 270 µm); height about 1000 µm; first 1.25 whorls (protoconch I; transition to protoconch II undefined) with discontinuous spiral threads; subsequent whorls (protoconch II) bluntly angular, with fine opisthocyrt axial riblets ending in suprasutural spiral lira and microgranules, more densely spaced at riblets; transition to the teleoconch marked by a sinuated lip.

Occurrence. Box-corer samples BC05 (2 specimens), BC72 (2); core BC05 (1). Maximum height: 7.5 mm.

Distribution and habitat. The species is an upper bathyal element distributed in the Mediterranean and the Atlantic, from British waters to the Lusitanian region ( Bouchet & Warén 1980).

Fossil record. None recorded.

Figures

FIGURE 15. a – d: Drilliola loprestiana (Calcara, 1841), sample BC 05, scale bars: 1 mm (a), 0.5 mm (b – c, protoconch), 0.1 mm (d, PI detail); e – h: Mangelia nuperrima (Tiberi, 1855), samples BC 05 (e) and BC 72 (f – h), scale bars: 2 mm (e), 0.5 mm (f – g, protoconch), 0.1 mm (h, PI detail); i: Mangelia serga (Dall, 1881), sample BC 72, scale bar 2 mm; j – l: Pleurotomella eurybrocha (Dautzenberg & Fischer, 1896), sample BC 21, scale bars: 0.5 mm (j), 0.2 mm (k – l, protoconch); m – p: Teretia teres (Reeve, 1844), sample BC 72, scale bars: 1 mm (m), 0.2 mm (n – o, protoconch), 0.1 mm (p, PI detail); q – t: Pleurotomella demosia (Dautzenberg & Fischer, 1896), sample BC 71, scale bars: 2 mm (q), 0.2 mm (r – s, protoconch), 0.1 mm (t, PI detail).