Lepidolucina belepia, Glover & Taylor, 2007

Glover, Emily A. & Taylor, John D., 2007, Diversity of chemosymbiotic bivalves on coral reefs: Lucinidae (Mollusca, Bivalvia) of New Caledonia and Lifou, Zoosystema 29 (1), pp. 109-181 : 144

publication ID	https://doi.org/ 10.5281/zenodo.5392295
persistent identifier	https://treatment.plazi.org/id/039087F4-FFE2-6A01-13F6-FD20FBD2D4CB
treatment provided by	Marcus
scientific name	Lepidolucina belepia
status	sp. nov.

Treatment

Lepidolucina belepia View in CoL n. sp.

( Figs 22 View FIG ; 23A View FIG )

TYPE MATERIAL. — Holotype: 1 sh, L 13.1 mm, H 12.2 mm, T 3.6 mm ( MNHN).

Paratypes:from type locality, 1 RV, L 12.6 mm, H 12.4 mm, T 3.4 mm ( MNHN) ; 1 sh, L 10.1 mm, H 9.5 mm, T 2.8 mm ( BMNH 20050581 ) ; 1 sh, L 7.9 mm, H 6.8 mm, T 2.1 mm ( MNHN). — Secteur des Belep , stn 1145, 19°21’S, 163°45’E, 38 m, 6 v ( MNHN) GoogleMaps .

ETYMOLOGY. — Named for the Îles Belep.

TYPE LOCALITY. — New Caledonia, secteur des Belep, stn 1129, 19°29’S, 163°49’E, 40 m.

MATERIAL EXAMINED. — Touho. 2 stn, 0-4 m, 4 v.

Other New Caledonia. LAGON, stn 442, Atoll de Huon, 18°02’S, 162°56’E, 39 m, 1 v. — Stn 454, Atoll de Surprise, 18°30’S, 163°10’E, 36 m, 1 v. — Stn 468, 18°27’S, 163°10’E, 40 m, 1 sh. — Stn 517, lagon Nord, 19°09’S, 163°35’E, 42 m, 2 v. — Stn 1087, secteur des Belep, 19°48’S, 163°60’E, 24 m, 1 v. — Stn 1096, 19°51’S, 163°41’E, 27 m, 3 v. — Stn 1103, 19°43’S, 163°57’E, 32 m, 3 v. — Stn 1117, 19°38’S, 163°54’E, 36 m, 2 v. — Stn 1118, 19°45’S, 163°52’E, 30 m, 1 v. — Stn 1129, 19°29’S, 163°49’E, 40 m, 5 v. — Stn 1128, 19°31’S, 163°52’E, 26 m, 4 v. — Stn 1145,19°21’S, 163°45’E, 38 m, 1 v. — Stn DW 1390, Atoll de Surprise, 18°28’S, 163°09’E, 38 m, 1 v. — Stn DW 1394, 18°18’S, 163°03’E, 36 m, 1 v.

DESCRIPTION

Small to medium size (H to 12.5 mm, L to 13.5 mm), subcircular,H/L 0.94, moderately inflated (T/L 0.27),

white, umbones low, near mid-plane.Lateral edges of dorsal areas sharply angulated. Protoconch smooth 190 µm, PI large, PII a narrow rim ( Fig. 22G View FIG ). Sculpture of around 54-58 narrow,radial ribs with thin but distinct interspaces. Ribs are broader in anterior and posterior sectors of shell. Each rib bears closely spaced, dorsally curved, semicircular scales.The scales are wider and flaring on the anterior broader ribs. Lunule short, lanceolate, asymmetrical, greater part in right valve. Escutcheon narrow, dorsal edge with slightly extended scales.Hinge plate narrow, LV with two cardinal teeth and small anterior and posterior laterals; RV with two cardinal teeth the posterior much larger and sometimes bifid, anterior and posterior laterals very small. Ligament external and straight. Anterior adductor muscle scar medium long,detached from pallial line for 1/2 of length at angle of 15°. Posterior adductor scar oval. Pallial line entire, broad. Shell outside of pallial line glossy and shell margin serrate with finer denticulations superimposed on the serrations ( Fig. 22H View FIG ). Shell within pallial line dull with small, circular, pallial attachment scars. Pallial blood vessel scar often visible.

REMARKS

Lepidolucina belepia n. sp. is similar to L. venusta n. comb. but with distinct interspaces between the radial ribs, generally semicircular rather than arcuate scales, more sharply defined edges to the anterior and posterior dorsal margins, a shorter ligament and a shorter anterior adductor muscle scar.