Danilia tinei ( Calcara, 1839 )

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 : 56

Danilia tinei ( Calcara, 1839)

Fig. 12 d

Monodonta tinei Calcara, 1839 (p. 14, fig. 8; reprint).

Danilia (Brus.) Tinei, Calcara—Monterosato 1880 [b] (p. 252).

Danilia tinei Calcara—Tryon 1889 (p. 449, pl. 37, figs. 20–22); Monterosato 1914 (p. 382, pl. 9, figs. 2–2a); Hidalgo 1917 (p. 277).

Danilia tinei (Calcara) — Nordsieck 1968 (p. 19, pl. 3, fig. 09.40).

Danilia otaviana (Cantraine) — Guidastri et al. 1984 (p. 132, figs. 16–21).

Danilia tinei ( Calcara, 1839) — Ghisotti & Melone 1971 (p. 55, fig. 09.40); Palazzi & Villari 2001 (p. 11, fig. 1); Beck et al. 2006 (p. 46, bottom fig.); Mastrototaro et al. 2010 (fig. 5 a).

Danilia otaviana ( Cantraine, 1835) — Poppe & Goto 1991 (p. 77, pl. 7, fig. 1); Cossignani et al. 1992 (fig. 040); Giannuzzi- Savelli et al. 1994 (p. 84, figs. 260–262); Repetto et al. 2005 (p. 89, top left fig.).

Diagnostic characters. Trochiform, thick shell; robust varix beyond the outer lip; thin and moderately wide parietal callus; large and abapically pointed columellar tooth separated from the basal lip by a narrow rounded sinuation; outer lip with about 13 robust inner ribs and intercalated weaker ones; numerous prosocline collabral ribs passing over 4 main spiral cords and some intermediate weaker ones; pointed and forward directed nodules at the intersections of ribs and spiral cords; shell whitish with few irregular brown bands that are rather distinct to each other. Protoconch: not available.

Remarks. A single adult specimen devoid of protoconch was at hand. Danilia tinei is sometimes cited as the only Mediterranean Trochidae possessing a thickened lip (e.g. Tryon 1889; Ghisotti & Melone 1971), although this character is also present in the closely related D. costellata ( Costa O.G., 1861). The relationships of D. costellata and D. tinei have been clarified by Palazzi & Villari (2001). Olivia otaviana Cantraine, 1835 seems to be exclusively a Tertiary fossil; recent citations are included in the synonymy of D. tinei following CLEMAM’s (2016) interpretation.

Occurrence. Box-corer sample BC72 (1 specimen). Height: about 11 mm.

Distribution and habitat. The species is rare and occurs in the Mediterranean and European Atlantic waters, as far North as Norway, in the 20–2000 m bathymetric range, dwelling on gravel, stones and Lophelia reefs ( Poppe & Goto 1991; Høisaeter 2009); it was regarded as a preferential characteristic element of the DC biocoenosis (coastal detritic bottom) according to Di Geronimo et al. (1982). In the Santa Maria di Leuca CWC biotope, it was found on living colonies of Madrepora oculata (Mastrototaro et al. 2010) .

Fossil record. Pliocene of Sicily; Pleistocene of southern Italy (Monterosato 1880[b]; Di Geronimo & La Perna 1997).

Figures

FIGURE 12. a – c: Anatoma aspera (Philippi, 1844), sample BC 71, scale bars: 1 mm (a – b), 0.1 mm (c, protoconch); d: Danilia tinei (Calcara, 1839), sample BC 72, scale bar 5 mm; e – g: Cirsonella romettensis (Granata – Grillo, 1877), sample BC 67, scale bars: 1 mm (e – f), 0.1 mm (g, protoconch); h – j: Putzeysia wiseri (Calcara, 1842), sample BC 66, scale bars: 2 mm (h), 0.2 mm (i – j, protoconch); k – m: Mikro? sp., sample BC 52, scale bars: 0.2 mm (k – l), 0.1 mm (m, protoconch); n – p: Adeuomphalus densicostatus (Jeffreys, 1884), sample BC 72, scale bars: 0.2 mm (n – o), 0.1 mm (p, protoconch).