Turridrupa maestratii Stahlschmidt, Puillandre, Olivera & Kantor, 2025

Stahlschmidt, Peter, Kantor, Yuri I., Zuccon, Dario, Olivera, Baldomero M. & Puillandre, Nicolas, 2025, Revision of the genus Turridrupa (Gastropoda, Turridae) with description of 15 new species, Zootaxa 5708 (1), pp. 1-66 : 11-13

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

( Figs. 3 A–F , 21 E–F )

Type material

HOLOTYPE: New Caledonia, LAGON , Stn DW1148 , off Belep , 19°07'S, 163°30'E, 220 m, 15.9 mm ( MNHN-IM- 2000-37773; Figs. 3 A–C ).

PARATYPE 1: New Caledonia, BATHUS 4 , Stn DW942 , Grand Passage , 19°04'S, 163°27'E, 264–270 m ( MNHN- IM-2000-37774; radula voucher; Figs. 3 E–F ) .

PARATYPE 2: New Caledonia: CONCALIS , Stn DW3024 , Grand Passage , 18°57'S, 163°22'E, 349–370 m ( MNHN- IM-2009-33617; Fig. 3 D ) .

PARATYPE 3: same locality as Paratype 2 ( MNHN-IM- 2009-24961).

PARATYPES 4–5: New Caledonia, BATHUS 4 , Stn DW942 , Grand Passage , 19°04'S, 163°27'E, 264–270 m ( PS-1042 ) .

Sequenced material

Paratypes 2 and 3.

Material examined

NEW CALEDONIA: BATHUS 4: Stn DW931 (MNHN-IM-2014-204).

Distribution

So far only know from the Grand Passage area of New Caledonia, in depths between 220 and 370 m.

Description

Shell medium-sized for genus, up to 21.0 mm in height, narrowly fusiform with about 7.5 teleoconch whorls; high spire, almost twice the height of the aperture including siphonal canal; siphonal canal fairly short, bent slightly to right; anal sinus moderately deep U-shaped, relatively wide, at the termination of the second spiral cord; parietal callus-pad well-developed; interior of lip with about 6 fine spiral threads; stromboid notch wide and shallow, lip preceded by a low, broadly convex varix.

Spire whorls sculptured with three strong cords and a fourth emergent, or half emergent, over the last whorls; subsutural cord narrow, sharply angular; sinus cord with laterally elliptical gemmules, 13–14 on penultimate whorl, surmounted by a thin keel; third and 4th cords smooth or slightly undulating, spiral cords, equal in width to subsutural cord; base of last whorl with about 10 main spiral ridges, strong, widely spaced, those on fasciole close and fine, interstices with thin spiral threads.

Protoconch domed, about 2.75 whorls, last 1.5 with arcuate opisthocline axial riblets.

Colour uniform whitish-yellow to reddish-brown, occasionally with light-brown maculation in interspaces of the gemmules.

Radula ( Figs. 21 E–F ) with>35 rows of teeth; posterior part lost during preparation. Central formation has three elements: narrow, pointed central cusp (length-to-width ratio ~5) and broad, triangular lateral elements with vertex directed backward ( Fig. 21 F ). Marginal teeth ~55 µm long (1.7% AL). Major limb moderately broad, forms weak anterior blade, not distinctly separated from tooth structure.Accessory limb narrower anteriorly, widens posteriorly, nearly matches major limb in width. Fuses with major limb’s dorsal surface, no socket. Accessory limb ~0.7 length of major limb, terminates at same outer limit as major limb.

Remarks

Turridrupa maestratii sp. nov. is very similar to T.acutigemmata and differs mainly by having a paucispiral protoconch (while T. acutigemmata has a multispiral protoconch), by the slightly slenderer shape, and by the undulating spiral cords (while the spiral cords other than the sinus cord are smooth in T. acutigemmata ). The difference in the shells is confirmed by the genetic separation based on cox1 data.

Etymology. Turridrupa maestratii sp. nov. is named to honour Philippe Maestrati ( MNHN) for his contributions to malacology, for his important help while studying the material available in MNHN, for photography of several of the depicted specimens, and last but not least for the pleasant hours we spent on several expeditions.

Figures

FIGURE 3. Turridrupa maestratii sp. nov.; A–C. Holotype, 15.9 mm, New Caledonia, LAGON, Stn. 1148, 220 m, MNHN- IM-2000-37773; D. Paratype 2, Sequenced specimen, 10.5 mm, New Caledonia, CONCALIS, Stn. DW3024, MNHN-IM- 2009-33617; E–F. Paratype 1, Radula and ESEM voucher (F: protoconch), 11.3 mm, New Caledonia, BATHUS 4, Stn. DW942, MNHN-IM-2000-37774. Turridrupa albogemmata Stahlschmidt & Fraussen, 2011: G–I. Holotype, 21.8 mm, Philippines, Balicasag Island, 80–120 m, MNHN-IM-2000-23298. A-E at the same scale. Scale bar for ESEM scan: 500 µm.

FIGURE 21. Radulae of Turridrupa species: A. T. acutigemmata, New Caledonia, LAGON, Stn. DW347, SL 22.0 mm, AL 5.9 mm; B. T. neojubata sp. nov., New Caledonia, LIFOU 2000, Stn. 1464; C, D. T. jubata, New Caledonia, LAGON, Stn. DW808; E–F. T. maestratii sp. nov., Paratype 1, New Caledonia, BATHUS 4, Stn. DW942; G–H. T. pallurae, LAGON, Stn. DW1148.