Loricella vanbellei Sirenko, 2008

Sirenko, Boris, 2021, Composition of the genus Loricella (Mollusca: Polyplacophora: Loricidae) and the description of two new species, Zootaxa 4981 (2), pp. 275-300 : 284-286

Loricella vanbellei Sirenko, 2008

( Figs. 1 E–G , 11–13 )

Loricella oviformis ; Kaas 1985: 310–314, figs. 41–45 (in part, non L. oviformis ( Nierstrasz, 1905)) .

Loricella profundior ; Kaas 1990: 178; 1991: 22, figs. 68–73 (in part, non L. profundior ( Dell, 1956)) .

Loricella vanbellei Sirenko 2008: 60 , figs. 84, 85, 87–113.

Type material. Holotype (MNHN-IM-2000-20248) and 4 paratypes ( MNHN-2000-20249 , MNHN-IM-200020795-20796), 1 paratype ( ZISP).

Type locality. South of New Caledonia, 22°52’S, 167°20’E–168°22’E, 491–558 m [SMIB 8: stn DW 193– 196] .

Material examined. New Caledonia, “EBISCO” stn DW 2607, 19°33’S, 158°40’E, 400–413 m, 1 spm ( MNHNIM- 2013-49564), BL 11.0 mm, 18.10.2005 ; “TERRASES” stn DW 3053, 23°45’S, 168°16’E, 410–440 m, 1 spm (MNHN-IM-2013-66456), BL 14.0 mm, 19.10.2008 ; “TERRASES” stn DW 3060, 23°39’S, 167°44’E, 450– 440 m, 1 spm (MNHN-IM-2013-66455), BL 6.0 mm, 21.10.2008 ; “KANACONO” stn DW 4718, 22°47’S, 167°09’E, 350 m, 1 spm (MNHN-IM-2013-69613), BL 23.0 mm, 19.08.2016 ; “KANACONO” stn DW 4722, 22°54’S, 167°17’E, 505– 496 m, 1 spm (MNHN-IM-2013-69525), BL 16.0 mm, 19.08.2016 ; “KANACONO” stn DW 4781, 22°57’S, 167°47’E, 295–355 m, 1 spm (MNHN-IM-2013-67037), BL 15.0 mm, 29.08.2016 .

Distribution. New Caledonia (255–580 m: Sirenko 2008 and this study).

Remarks. The new specimen studied (MNHN-IM-2013-49564) from New Caledonia is similar to the holotype (MNHN-IM-2000-20248) in shape, the structure of the shells and the shape of radular teeth. Most dorsal scales have granules near the edge of the distal part and only a few scales have grooves. This specimen has dorsal a elevation of 0.38, slit formula 13/1 (rare 2)/sinus + 2 obsolete, valve III with two slits in both sides, valve II with two slits in right side, other intermediate valves with one slit in side, 20 gills on each side, and a radula 2.3 mm long with 28 transverse rows of mature teeth.

Figures

FIGURE 1. Complete specimens of selected species of the genus Loricella. A, B. L. neoguinensis n. sp. Papua New Guinea, holotype (MNHN-IM-2013-45614), BL 16.0 mm; C, D. L. profundior, Tonga Islands, (MNHN-IM-2013-59980), BL 11.5 mm; E-G. L. vanbellei, New Caledonia, (MNHN-IM-2013-69525) BL 16.0 mm; A, C, G. Dorsal view; B, E. Ventral view; D, F. Lateral view. m.f.—mantle fold.

FIGURE 11. Loricella scissurata, Solomon Islands, (MNHN-IM-2013-59993), BL 16.5 mm. A. Insertion plate, ventral view; B. Insertion plate, lateral view.

FIGURE 12. Loricella vanbellei, New Caledonia, (MNHN-IM-2013-49564), BL 11.0 mm. A. Valve I, dorsal view; B. Valve II, dorsal view; C. Valve V, dorsal view; D. Valve VIII, dorsal view; E. Valve V, detail of tegmentum in central and lateral areas; F. Valve V, rostral view; G. Valve VIII, lateral view.

FIGURE 13. Loricella vanbellei, New Caledonia, (MNHN-IM-2013-49564), BL 11.0 mm. A. Dorsal scales, marginal spicules and ventral scales; B. Dorsal scales; C. Dorsal scales and dorsal bristles; D. Dorsal scales and marginal spicules.