Turridrupa neojubata 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 : 17-18

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

( Figs. 5 A–J , 21 B )

Type material

HOLOTYPE: Papua New Guinea, PAPUA NIUGINI, Stn PS22 , N Tadwai Island , 04°59,1'S, 145°47,6'E, 11 m, 27.3 mm ( MNHN-IM- 2013-14782; Figs. 5 A–C ).

PARATYPE 1: Papua New Guinea: PAPUA NIUGINI, Stn PR35 , 05°06,3'S, 145°49,3'E, inner slope ( PS-1063 ) .

PARATYPE 2: Philippines, Cebu, Mactan Island , 20–30 m (PS-207; Figs. 5 D –F ) .

PARATYPES 3–4: Philippines, Cebu, Sogod , 30–100 m, by tangle net ( MNHN-IM- 2019-1354; MNHN-IM-2019- 1357; Figs. 5 H ) .

PARATYPES 5–6: Philippines, Bohol, Calituban Island , 20–30 m ( MSF) .

PARATYPE 7: LAGON , Stn DW808 , New Caledonia, off Poindimié , 20°57'S, 165°29'E, 30 m, ( MNHN-IM- 2014- 727, radula voucher) .

Sequenced material

PHILIPPINES: Cebu, Sogod , 30–100 m, by tangle net ( Paratypes 3–4).— PAPUA NEW GUINEA: PAPUA NIUGINI, Stn PS22 , N Tadwai Island , 04°59,1'S, 145°47,6'E, 11 m ( Holotype)— VANUATU: SANTO 2006, Stn DS 04, Segond Channel, 15°31.4'S, 167°14.1'E, 25 m, (MNHN-IM-2007-40985)— Stn FB 64, W Tangoa Island , 15°35,4'S, 166°59,2'E (MNHN-IM-2007-41299).

Material examined

INDONESIA: Riau Islands, Anambas Island, by local fishermen, 2 spms ( PS- 1061).— PHILIPPINES: Cebu, Sogod, Cebu, Sogod, 30–100 m, by tangle net (MNHN-IM-2014-730)— Cebu, Mactan, 20–30 m ( PS- 1076).— NEW CALEDONIA: MOUNTROUZIER: Stn 1319, 2 spms (MNHN-IM-2014-834)—LAGON: Stn 762, 1 spm (MNHN-IM-2014-835)—Stn DW1335, 1 spm (MNHN-IM-2014-836)—CORAIL 2: Stn DW08, 1 spm ( MNHN- IM-2014-837)—Stn DW80, 1 spm (MNHN-IM-2014-838)—LIFOU: Stn 1464, 1 spm (MNHN-IM-2014-839; radula voucher).

Distribution

So far known from Indonesia, Philippines, Papua New Guinea, New Caledonia, and Vanuatu in depths between 10 to 130 m.

Description

Shell large-sized for genus (up to 29.4 mm) claviform with 8–9 teleoconch whorls, spire high and orthoconoid, about 1.2 times the height of the aperture including siphonal canal; siphonal canal moderately long, contracted, curved to right, its end obliquely truncate; spire whorls sloping but not overhanging following whorl; aperture trigonal, outer lip in side view strongly convex, crenate, stromboid notch broad and moderately deep; anal sinus deep, linguiform with a flaring rim, situated at end of a thin, weak sinus rib; interior of outer lip with about 7 spiral ridges, inner lip with a thick callus, its edge largely free; dorsum of last whorl with a hump-like median varix; fasciole strong, forming a wide false umbilicus.

Subsutural cord low with sloping sides, bearing an angular median ridge, sulcus shallowly concave, but part of a larger concavity between subsutural and peripheral cord; sulcus containing 1 or 2 weak spiral threads; sinus cord weak, crenulated with elongate and compressed crenules, ca. 23 on penultimate whorl; third spiral cord prominent on periphery 4 th spiral cord, situated at the suture. Base of last whorl with 3 angular main spiral cords, 2 weak ones anteriorly and rostrum with 4–5 coarse, angular spiral cords with additional weak spiral threads in the interspaces.

Protoconch worn in all examined specimens, domed, of approx. 2.5 whorls, its last whorl with opisthocline, arcuate riblets.

The colouration of the posterior part varies from light yellow-brown, reddish-brown to blackish-brown with spiral cords sometimes darker, base and rostrum of last whorl cream to white (sometimes contrasting, sometimes merging gradually), first 3 teleoconch whorls whitish, gradually darkening.

Radula ( Fig. 1B ) ~70 rows of teeth, including 28 nascent rows; length ~2.2 mm. Central formation has three elements: rhombic central cusp (length/width ~3.3–4.9) and trapezoid, nearly triangular lateral elements with broad, elevated anterior margin. Lateral elements either closely positioned or broadly spaced from central cusp ( Fig. 1B , insert). Marginal teeth ~70–95 µm long (1.1–1.2% AL). Major limb moderately broad. Accessory limb narrow anteriorly, fuses with major limb’s dorsal surface, no socket. Broadens sharply or gradually, width slightly narrower or equal to major limb. Accessory limb ~0.6–0.65 length of major limb, does not protrude beyond major limb’s outer limit.

Remarks

Turridrupa neojubata sp. nov. has been known as “ Turridrupa jubata ” in collections but differs readily by the much broader shells and the comparatively shorter siphonal canal is confirmed by the molecular analysis.

Several distinct specimens ( Fig. 5 J ) with a very angular shell outline, a short siphonal canal, and a pronounced terminal varix are known from the Philippines and New Caledonia. Whether they present a form or a further undescribed species requires further evaluation and confirmation by DNA analysis.

Etymology

In reference to the difference to the real and “old” Turridrupa jubata with which it was confused.

Figures

FIGURE 1. Bayesian phylogenetic tree obtained with the cox1 alignment. PSH numbers (from 1 to 19) for the less inclusive partition are reported. Posterior probabilities (when> 0.95) are reported for each node.

FIGURE 5. Turridrupa neojubata sp. nov.: A–C. Holotype (sequenced), 27.3 mm, Papua New Guinea, PAPUA NIUGINI, Stn. PS22, MNHN-IM-2013-14782; D–F. Paratype 1, 28.4 mm, Philippines, Mactan Island, 40–60 m, PS-207; G. 27.1 mm, New Caledonia, LAGON, Stn. 762, MNHN-IM-2014-835; H. Sequenced specimen, 31.7 mm, Philippines, Sogod, MNHN-IM-2019- 1354; I. Radula voucher MNHN-IM-2014-839, LIFOU, Stn.1464, 22.6 mm; J. 29.3 mm, Philippines, Mactan Island, 20–30 m, PS-1076. All shells at the same scale.

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.