Mangelia serga ( Dall, 1881 )

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 serga ( Dall, 1881)

Fig. 15 i

Pleurotoma (Drillia) serga Dall, 1881 (p. 65).

Mangilia serga Dall—Dall 1889 [a] (p. 114, pl. 9, fig. 4).

Pleurotoma serga Dall—Dautzenberg & Fischer 1896 (p. 417, pl. 17, fig. 9); Di Geronimo & Panetta 1973 (p. 86).

Pleurotomoides (Acmaturris) lyciaca ( Forbes, 1843) — Nordsieck 1977 (p. 63, pl. 21, fig. 165).

Mangelia serga ( Dall, 1881) — Bouchet & Warén 1980 (p. 30, figs. 42, 80, 214); Poppe & Goto 1991 (p. 171, pl. I, fig. 19); Giribet & Peñas 1997 (p. 72, figs. 54, 55); Repetto et al. 2005 (p. 209, bottom left fig.); Beck et al. 2006 (p. 82, mid fig.).

Kurtziella serga ( Dall, 1881) — Gracia et al. 2004 (p. 70).

Diagnostic characters. Slender shell; steep subsutural shelf; aperture narrow, elongate; large siphonal canal; bluntly pointed nodes. Protoconch: not available.

Remarks. Only two fragmentary and worn specimens were at hand. According to CLEMAM (2016), the possible synonym Pleurotoma lyciaca Reeve, 1844 represents a nominal taxon in need of reassessment.

Occurrence. Box-corer sample BC72 (1 specimen); core BC51 (1). Height: not available.

Distribution and habitat. Mangelia serga is distributed in the northeastern Atlantic and throughout the Mediterranean as well as in the western Atlantic, from the Gulf of Mexico to Brazil; it dwells on soft bottoms in the 6–1980 m depth interval, reaching much greater depths in Atlantic waters ( Bouchet & Warén 1980; Bouchet & Taviani 1992). It is an element of the Abra-Nucula biocoenosis of the bathyal of Taranto ( Di Geronimo & Panetta 1973).

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).