Amphissa acutecostata ( Philippi, 1844 )

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 : 63-65

Amphissa acutecostata ( Philippi, 1844)

Fig. 14 h–j

Fusus costulatus Cantraine, 1835 (p. 393).

Buccinum acute-costatum Philippi, 1844 (p. 192, pl. 27, fig. 14).

Columbella haliaeeti Jeffreys, 1867 (p. 356: 1867; pl. 88, fig. 3: 1869).

Anachis costulata (Cantraine) auct. var. albula Jeffreys—Dautzenberg & Fischer 1896 (p. 436).

Amphissa haliaeeti ( Jeffreys, 1867) — Fretter & Graham 1984 (p. 462, fig. 321).

Amphissa acutecostata ( Philippi, 1844) — Bouchet & Warén 1985 (p. 165, figs. 392, 395–398); Poppe & Goto 1991 (p. 150, pl. 30, fig. 24); Beck et al. 2006 (p. 80, top fig.).

Amphissa acutecostata ( Phil., 1844) — Sabelli & Spada 1986 (p. 2, fig. 8).

Amphissa acutocostata ( Philippi, 1844) — Giannuzzi-Savelli et al. 2003 (p. 242, fig. 560); Repetto et al. 2005 (p. 193, top left fig.).

Amphissa acutecostata (Philippi) — Di Geronimo et al. 2005 (fig. 3.4).

Diagnostic characters. Ovately fusiform shell; narrowly oval aperture; lirations on the inner side of the outer lip; slightly flexuous thin axial ribs, 11–15 per whorl; dense spiral striae, stronger on base. Protoconch: conical; 3.5 whorls; diameter about 880 µm (protoconch I: 310 µm); height about 660 µm; first 1.4 whorls (protoconch I) with densely set zig-zag spirals; subsequent whorls (protoconch II) with zig-zag spirals adapically and irregular axial bars abapically; transition to the teleoconch marked by an opisthocyrt lip.

Remarks. Some of the Santa Maria di Leuca specimens are heavily worn and altered and presumably of Pleistocene age. They bear more and more sinuous axial ribs. According to CLEMAM (2016), A. acutecostata has a number of synonyms, amongst them Amphissa haliaeeti ( Jeffreys, 1867) and Amphissa costulata ( Cantraine, 1835, originally designated as Fusus costulatus , a name predated by F. costulatus Lamarck, 1822 ).

Occurrence. Box-corer samples BC70 (1 specimen), BC72 (2); core BC05 (1). Maximum height: 7 mm.

Distribution and habitat. Amphissa acutecostata is widely distributed on both sides of the northern Atlantic, from New Jersey to North Carolina and from Norway to southern Morocco, the Canaries, the Azores and the Mediterranean; it dwells on sandy and muddy bottoms in the 150–2800 m depth interval ( Fretter & Graham 1984; Bouchet & Warén 1985; Poppe & Goto 1991; Pons-Moyà & Pons 1999; Olabarria 2006).

Fossil record. Pliocene of Northern Italy ; Pleistocene of southern Italy ( Bouchet & Warén 1985; Di Geronimo & La Perna 1997; Di Geronimo et al. 2005; Tabanelli 2008). Amphissa acutecostata was originally described on Pleistocene material from Calabria, Amphissa costulata on Tertiary material from Sicily.

Figures

FIGURE 14. a – c: Pagodula echinata (Kiener, 1840), sample BC 72, scale bars: 5 mm (a), 0.5 mm (b – c, protoconch); d – g: Nassarius lima (Dillwyn, 1817), sample BC 72, scale bars: 5 mm (d), 1 mm (e, juvenile), 0.5 mm (f – g, protoconch); h – j: Amphissa acutecostata (Philippi, 1844), sample BC 72, scale bars: 2 mm (h), 0.5 mm (i – j, protoconch); k – m: Fusinus rostratus (Olivi, 1792), sample BC 72, scale bars: 5 mm (k), 0.5 mm (l – m, protoconch); n – p: Drilliola emendata (Monterosato, 1872), sample BC 67, scale bars: 2 mm (n), 0.5 mm (o – p, protoconch).