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

(Figs. 6 F–K)

Type material

HOLOTYPE: Philippines, Cebu, Olango Island, 20–40 m, 14.5 mm (MNHN-IM- 2000-30419; Figs. 6 F–H) .

PARATYPE 1: Philippines, Cebu, Mactan Island, ca. 30 m (PS-1073) .

PARATYPE 2: Philippines, Bohol, Panglao (MNHN-IM- 2000-37775; Figs. 6 J–K) .

PARATYPE 3: Philippines, Bohol (Chino-coll.)

Material examined

JAPAN: Kii, Sakai, 40 m, 1 spm (Chino coll.; Fig. 6 I).— PHILIPPINES: Bohol, 2 spms (MNHN-IM-2014- 184).

Description

Shell small-sized for genus, up to 14.5 mm in height, solid, narrowly claviform, spire with 7 to 8 whorls, siphonal canal short, bent slightly to right; whorls flat-sided, submedian on later ones, suture inconspicuous. Anal sinus moderately deep, broadly U-shaped; parietal callus-pad well developed; interior of outer lip with about 6 fine spiral ridges; stromboid notch fairly deep; lip preceded by a low, broadly convex varix.

Sculpture of prominent and thick spiral cords with sloping sides, 3 on spire whorls, increasing to 4 on penultimate whorl, almost equal in strength (third cord sometimes slightly stronger); sinus cord gemmulate with about 20 low gemmules on penultimate whorl (gemmules about 2-times larger than their intervals), other cords may also show weak gemmules; interspaces narrow, last whorl with 8 strong spiral cords, intervals between cords with up to 9 very fine spiral threads; no axial sculpture.

Protoconch domed, about 4 whorls, last 2 whorls with arcuate opisthocline axial riblets.

Colour of protoconch and the approximately first 4 teleoconch whorls off-white to pale brown, followed by a transition to dark reddish brown with paler coloured spiral cords (in some specimens only very slightly paler coloured).

Remarks

Turridrupa aureoresina sp. nov. resembles T. deceptrix Hedley, 1922 but differs in the less convex whorls, the slightly stronger spiral cords with well-developed gemmules, and the less dense axial sculpture on the protoconch.

Distribution

So far only know from Japan and the Philippines, from 20 to 40 m.