Turridrupa magnifica Stahlschmidt, Puillandre, Olivera & Kantor sp. nov.

(Figs. 16 E–I)

Type material

HOLOTYPE: New Caledonia, TERRASSES, Stn DW 3121, 380– 400 m, 29.6 mm (MNHN-IM-2009-6553, Figs. 16 E–G).

PARATYPE 1: New Caledonia, EBISCO, DW2607, 400–413 m (PS-450, Figs. 16 H–I).

PARATYPE 2: New Caledonia, off Isle des Pins, dredged 250–300 m (PS-449).

PARATYPE 3: New Caledonia, KANADEEP, Stn DW 4979, 295– 315 m (MNHN-IM-2013-48143).

Sequenced material

NEW CALEDONIA: TERRASSES: Stn DW 3121 (MNHN-IM-2009-6553, Holotype).—KANADEEP: Stn DW 4979 (MNHN-IM-2013-48143, Paratype 3)—DW4981 (MNHN-IM-2013-48150).—EBISCO: Stn CP 2595 (MNHN-IM-2007-40769)— Stn DW 2607 (MNHN-IM-2007-40773; MNHN-IM-2007-17850).

Material examined

VANUATU: MUSORTSOM 8: Stn DW977, 1 spm.

Distribution

So far only known from New Caledonia and Vanuatu, from 200 to 500 m.

Description

Shell large-sized for genus, up to 29.6 mm in height; broadly fusiform, with spire only slightly heigher than aperture including siphonal canal; suture deeply incised, covered by overhanging subsutural part of suceeding whorls; siphonal canal constricted, curved to right, terminally truncate, barely indented, rostrum with fasciole and false umbilicus; columellar callus slightly detached; anal sinus deep, U-shaped, at the termination of the second spiral cord; parietal callus-pad well developed and thick; interior of lip with about 5 fine spiral threads; lip preceded by a broadly convex varix.

Spire whorls with 3–4 subequal spiral cords (4th cord may be fully visible or barely showing at suture), narrower than their intervals; apart from 4 th cord, all spiral cords with laterally elliptical and low gemmules, about 16 per spiral and whorl, slightly stronger developed on sinus spiral cord; sinus cords and third cord on the periphery; base of last whorl with about 15 main spiral cords, slightly gemmulate, widely spaced, those on fasciole close and fine; interstices of spiral cords with well-developed 2–5 spiral threads.

Protoconch domed, of about 2.5 whorls, all except first with arcuate opisthocline axial riblets.

Colour whitish-cream to light brown, spiral cords maculated with darker brown spots, varix and parts of the base darker brown tinged.

Remarks

Turridrupa magnifica sp. nov. is most similar to Turridrupa poppei Stahlschmidt & Fraussen, 2011, but differs in the broader shape, the stronger spiral threads in the interstices of the spiral cords, the overhanging of proceeding whorls giving the suture a channel-like impression, and the completely different colouration.

Etymology

From the Latin, meaning “splendid”, in reference to the magnificent shape and colouration of the shell.