Neotreijathana elongatum, (Hiro, 1931)

Achituv, Yair & Langsam, Yaacov, 2005, Coral-inhabiting barnacles (Cirripedia; Thoracica; Balanomorpha; Pyrgomatinae) from east of 150 ° W, Journal of Natural History (J. Nat. Hist.) 39 (20), pp. 1705-1717 : 1713

NeotreIJathana elongatum ( Hiro, 1931)

( Figure 5 )

Synonymy

Pyrgoma elongatum Hiro 1931, p 154 –155, Plate XIV Figure 2, 2b .

Saυignium elongatum: Ross and Newman 1973, p 159 , Figure 17l–n.

Neaemania elongatum: Anderson 1992, p 329 , Figure 38N.

Wanella elongatum: Anderson 1993, p 377 .

Neotreυathana elongatum Ross 1999, p 835 , Figure 1 .

Material examined

MNHN-Ci 2967 from Goniastrea sp. MNHN-Scle 20271 (field number TUR 6 e; [ T VI, p 1067, 1060]). Four specimens; shells and opercular valves. French Polynesia; Tuamotu Archipelago; Tureia Island; 20 ° 50 9 S, 138 ° 33 9 W, 4 November 1965, coll. Chevalier; MUSEUM II (CEA) Expedition .

Description

Wall oval, with radial ribs, rostro-carinal diameter to 5 mm. White or pink orifice large oval. Inner surface with growth lines, growth line pear shape with pointed end directed to rostrum, blunt end carinal. Scutum and tergum fused, transversally elongated, no suture between scutal and tergal parts of opercular valves. Opercular valves curved inward, apex pointed. Basal margins sinusoidal, short broad articular ridge, no occludent ledge. Indistinct spur, internal tooth blunt, directed inward, located on basal margins on tergal part of valve. Growth lines on outer surface, no external furrow.

Distribution

Red Sea, Japan, French Polynesia.

Remarks

Neotreυathana elongatum was first described by Hiro (1931) from Japan and Brickner (1994) reported its presence in the Red Sea. The specimens of Neotreυathana elongatum were found extracted together with sample MNHN-Ci 2966 and MNHN-Ci 2969 on the same piece of Goniastrea .

Figures

Figure 1. Collection sites of coral-inhabiting barnacles in French Polynesia. Location of Tahiti is marked for reference.

Figure 2. Cantelius tredecimus from Marquesas Islands; Nuku-Hiva Island. (A) Scutum, outer view; (B) scutum, inner view; (C) tergum inner view, tergum is damaged. Scale bars: 1 mm (A, B); 0.5 mm (C).

Figure 5. Neotreυathana elongatum from Tuamotu Archipelago; Tureia Island. (A) Shell external view; (B) shell inner view; (C) fused scutum and tergum external view; (D) basi lateral view; (E) internal view. Scale bars: 2 mm (A, B); 1 mm (C–E).