Granulifusus jeanpierrevezzaroi ( Cossignani, 2017 ) Kantor & Fedosov & Snyder & Bouchet, 2018

Kantor, Yuri I., Fedosov, Alexander E., Snyder, Martin Avery & Bouchet, Philippe, 2018, Pseudolatirus Bellardi, 1884 revisited, with the description of two new genera and five new species (Neogastropoda: Fasciolariidae), European Journal of Taxonomy 433, pp. 1-57 : 24-27

Granulifusus jeanpierrevezzaroi ( Cossignani, 2017) comb. nov.

Figs 4 C–D, 5

Pseudolathyrus cf. kurodai Springsteen & Leobrera, 1986: 177 , pl. 48 fig. 1.

Fusolatirus kuroseanus Thach, 2007: 118 , pl. 29, no. 518 (not of Okutani 1975).

Pseudolatirus jeanpierrevezzaroi Cossignani, 2017: 14–15 .

Pseudolatirus jeanpierrevezzaroi – Mallard & Robin 2017: 152.

Molecular diagnosis

A molecular diagnosis is given in Table 2 .

Type material

Holotype

VIETNAM: off Nha Trang, SL 66.3 mm ( MMM) (not seen).

Sequenced material

NEW CALEDONIA: TERRASSES: 1 lv, stn CP3095, 22°02′ S, 167°06′ E, 320–380 m ( MNHN IM- 2007-36886). – CONCALIS: 1 lv, stn CP3026, Grand Passage, 20°17′ S, 163°50′ E, 590–809 m ( MNHN IM-2007-35083).

PHILLIPPINES: AURORA 2007: 1 lv, stn CP2748, 15º56′ N, 121º465′ E, 247–249 m (MNHN IM- 2007-34593).

Other material examined

SOUTH AFRICA: 2 spms, Agulhas Bank, 160 m ( ANSP 425332); 1 spm, Agulhas Bank, 160 m ( ANSP 425328); 3 spms, off Durban ( ANSP 425336).

TAIWAN: 2 spms, trawled ( ANSP 425339); 2 spms, ‘by divers under rocks, southeast Sea of Formosa’ ( ANSP 425338); 2 spms, SW of Taiwan, 140–200 m ( ANSP 425335); 2 spms, 200–300 m ( ANSP 425333); 1 spm, China Sea, off Taiwan ( ANSP 425329); 4 spms, trawled ( ANSP 425334).

MOZAMBIQUE: 3 spms ( ANSP 425340).

VIETNAM: 1 spm, Nha Trang region, 20–35 m ( ANSP 425341).

SOUTH CHINA SEA: 2 spms, on sand bottom ( ANSP 422786); 1 spm, ‘deep water’ ( ANSP 422785).

PHILIPPINES: 3 spms, off Bohol, tangle nets ( ANSP 425330); 1 spm, Philippine Is ( ANSP 425331); 1 dd, off Mindanao ( ANSP 425337). – MUSORSTOM 2: 5 lv, stn CP02, 14°01′ N, 120°17′ E, 184– 186 m; 37 lv +dd, stn CP26, 13°49′ N, 120°50′ E, 299–320 m; 18 lv +dd, stn CP68, 14°01′ N, 120°18′ E, 195–199 m; 1 lv, stn CP80, 13°45′ N, 120°37′ E, 178– 205 m. – MUSORSTOM 3: 1 lv?, stn CP97, 14°00′ N, 120°18′ E, 189–194 m; 5 lv, stn CP112, 14°00′ N, 120°18′ E, 187– 199 m.

NEW CALEDONIA: ‘ Vauban ’ 1978–79: 1 dd, stn DR34, 22°32′ S, 166°26′ E, 350–420 m; 1 lv, stn DR40, 22°30′ S, 166°24′ E, 250– 350 m. – LAGON: 1 lv, stn 1062, 20°15′ S, 163°53′ E, 300– 320 m. – BATHUS 1: 2 lv, 4 dd, stn CP656, 21°13′ S, 165°54′ E, 452–460 m; 2 dd, stn CP657, 21°14′ S, 165°55′ E, 490–530 m; 1 dd, stn CP669, 20°57′ S, 165°35′ E, 255–280 m; 1 lv, 1 dd, stn CP670, 20°54′ S, 165°53′ E, 394–397 m; 1 dd, stn DW683, 20°35′ S, 165°07′ E, 380–400 m; 8 lv, 1 dd, stn CP695, 20°35′ S, 164°58′ E, 410–430 m; 1 dd, stn CP701, 20°58′ S, 165°36′ E, 302–335 m; 1 lv, stn DE705, 21°02′ S, 165°38′ E, 350–400 m; 5 lv, stn CP707, 21°43′ S, 166°36′ E, 347–375 m; 2 dd, stn CP710, 21°43′ S, 166°36′ E, 320–386 m; 1 lv, stn CP711, 21°43′ S, 166°36′ E, 315–327 m; 1 lv, stn CP712, 21°44′ S, 166°35′ E, 210 m; 1 lv, stn CP713, 21°45′ S, 166°37′ E, 250 m. – BATHUS 4: 3 lv, stn CP946, 20°34′ S, 164°58′ E, 386–430 m; 3 lv, stn CP947, 20°34′ S, 164°58′ E, 470– 490 m.

FIJI: MUSORSTOM 10: 6 dd, stn CP1320, 17°17′ S, 177°54′ E, 290–300 m; 1 lv, 2 dd, stn CP1325, 17°16′ S, 177°50′ E, 282–322 m; 1 lv, stn CP1326, 17°14′ S, 177°50′ E, 265–300 m; 1 lv, stn DW1347, 17°31′ S, 178°40′ E, 344–349 m; 5 lv, 4 dd, stn CP1348, 17°30′ S, 178°40′ E, 353–390 m; 1 dd, stn CP1351, 17°31′ S, 178°40′ E, 292–311 m; 1 lv, stn CP1355, 17°50′ S, 178°49′ E, 302–310 m; 2 lv, 1 dd, stn CP1360, 18°00′ S, 178°48′ E, 402–444 m; 3 lv, stn CP1368, 18°11′ S, 178°24′ E, 380–469 m; 1 dd, stn CP1369, 18°11′ S, 178°23′ E, 392– 433 m.

TONGA: BORDAU 2: 3 dd, stn CP1510, 21°05′ S, 175°23′ W, 461– 497 m.

Description

Shell slender, fusiform, large for genus (to 90.0 mm, ANSP 425335). Protoconch multispiral, conical, smooth, translucent pale grey, of 3.25 somewhat convex whorls, last ½ whorl with 4–6 rounded axial riblets progressing in strength, protoconch/teleoconch boundary without varix. Protoconch diameter 1100 µm, exposed height 1280 µm ( Fig. 5E ). Teleoconch whorls convex, suture deep, adpressed. Axial sculpture of very prominent ribs, 7–9 per whorl. Spiral sculpture of evenly spaced strong cords, 2–3 on first whorl, 6–8 on penultimate whorl, about 23–25 on last whorls, becoming evanescent towards tip of canal. Weaker secondary cords between primary strong cord pairs, 1 on earliest whorls increasing to 3 on later whorls. Siphonal canal long, open, straight, about ¼ of shell length. Aperture with 7–12 interior lirae. Inner lip adherent, forming smooth, white columellar callus, with 3 rounded columellar plicae, adapical two more prominent than abapical one. In side view additional adapicalmost weak plicae can be observed. Teleoconch pale flesh to pale orange-brown with lighter prominent axial cords. Periostracum medium to dark brown.

Radula (MNHN IM-2007-34593, 62.2 mm, Fig. 4 C–D) 2.6 mm in length (13% of AL), of more than 105 transverse rows of teeth, of which 37 nascent. Radula narrow, distance between outer edges of lateral teeth about 130 µm (0.67% of AL without canal). Lateral teeth medium broad, arcuate, with attenuated outer anterior corner, producing short ‘handle’, and with six cusps, subequal in length, closely spaced, slightly curved and one additional small but distinct innermost cusp. Central tooth small, trapezoid with narrower base, with three cusps, central narrowest. Narrow but distinct transverse folds of the membrane situated serially between rows of lateral teeth (arrow). The radula of an additional specimen was examined and it is generally similar, although the left lateral teeth have five cusps, while vs six on the right teeth; also the central teeth are relatively narrower and longer, tricuspid with central cusp longest.

Body morphology and digestive system anatomy are in all details similar to Angulofusus nedae Fedosov & Kantor, 2012 , the major difference being the longer and thinner proboscis, which attains 20 mm in studied specimen (2.2 AL without canal) and is coiled within rhynchodeum.

Distribution

Throughout the tropical Indo-West Pacific, at depths 140–809 m, one specimen from commercial sources said to have been collected in 20–35 m ( Vietnam).

Remarks

Conchologically the species is most similar to Granulifusus annae sp. nov. which has a similar size, but G. jeanpierrevezzaroi comb. nov. differs in having fewer axial ribs per whorl and being nearly uniformly

coloured with lighter spiral cords, while in Granulifusus annae sp. nov. the spiral cords are darker than the background. These two species also differ in radular morphology.

Granulifusus jeanpierrevezzaroi comb. nov. is a very common species in the Philippines and is found on soft bottoms throughout the tropical Indo-West Pacific. It is remarkable that the species still had to be named, although it had been illustrated several times under incorrect names. Shells of many specimens are covered with zoantharians (e.g., Fig. 5 F–G).

Figures

Fig. 4. Radulae of species of Granulifusus and Okutanius gen. nov.A. Granulifusus discrepans (Kuroda & Habe, 1961), shell, see Fig. 3D (MNHN IM-2013-46327). B. Granulifusus williami (Poppe & Tagaro, 2006), comb. nov., shell, see Fig. 3H (MNHN IM-2013-58726). C–D. Granulifusus jeanpierrevezzaroi (Cossignani, 2017) comb. nov., shell, see Fig. 5B–D, arrow points to regularly spaced folds of the radular membrane (MNHN IM-2007-34593). E. Granulifusus annae sp. nov., New Caledonia, BATHUS 1, stn CP669, 20°57′ S, 165°35′ E, 255–280 m, shell, see Fig. 6F. F. Granulifusus tatianae sp. nov., Loyalty Ridge, MUSORSTOM 6, stn DW473, 21°09′ S, 167°55′ E, 236 m. G. Okutanius kuroseanus (Okutani, 1975) gen. et comb. nov., New Ireland, shell, see Fig. 9A (MNHN IM-2013-59070). H. Okutanius ellenae gen. et sp. nov., New Caledonia, NORFOLK 1, stn DW1658, 23°26′ S, 167°50′ E, 320–336 m, shell, see Fig. 10H).

Fig. 5. Granulifusus jeanpierrevezzaroi (Cossignani, 2017) comb. nov. A. Holotype, SL 66.3 mm (MMM) (photo courtesy of T. Cossignani). B–D. Sequenced specimen, SL 62.2 mm (MNHN IM-2007- 34593). D. Enlarged view of columella to show the plicae. E. Protoconch, New Caledonia, BATHUS 1, stn CP713, 21°45′ S, 166°37′ E, 250 m. F–G. Philippines, MUSORSTOM 3, stn CP97, 14°00′ N, 120°18′ E, 189–194 m, SL 42.2 mm. H. Fiji, MUSORSTOM 10, stn CP1355, 17°50′ S, 178°49′ E, 302–310 m, SL 56.8 mm. I. New Caledonia, BATHUS 1, stn CP670, 20°54′ S, 165°53′ E, 394–397 m, SL 39.4 mm. J. Philippines, MUSORSTOM 2, stn CP68, 14°01′ N, 120°18′ E, 195–199 m, SL 63.7 mm. All shells to the same scale, except D–E.