Annandaleum laccadivicum (Annandale, 1906)

Pitriana, Pipit, Jones, Diana S., Corbari, Laure & Rintelen, Kristina von, 2020, New insights gained from museum collections: Deep-sea barnacles (Crustacea, Cirripedia, Thoracica) in the Museum National d'Histoire Naturelle, Paris, collected during the Karubar expedition in 1991, Zoosystematics and Evolution 96 (2), pp. 649-698 : 649

Annandaleum laccadivicum (Annandale, 1906) Figure 15

Scalpellum laccadivicum Annandale, 1906b: 393. - 1908: pl. I, figs 3, 4. - 1913: 235; 1916b: 129, pl. vii, fig. 6. - Calman 1918b: 124. - Hiro 1933: 31, text figs 7, 8, pl. I, figs 11-11b. - 1937b: 392. - Stubbings 1936: 26. - Nilsson-Cantell 1938: 25.

Scalpellum subflavum Annandale, 1906b: 397. - Newman and Ross 1971: 122.

Scalpellum polymorphum Hoek, 1907: 80, pl. 7, figs 9-11. - Weltner 1922: 72.

Scalpellum molliculum Pilsbry, 1911: 68, pl. 10, figs 4, 5.

Annandaleum laccadivicum Rosell, 1991: 16, fig 1a. - Zevina 1981: 170, fig. 121. - Jones et al. 2001: 251. - Chan et al. 2009b: 102-103.

Material examined.

- Tanimbar Island: 1 specimen, MNHN-IU-2019-4931, Stn. CP 54, 08°21'S, 131°43'E, 836-869 m depth, 30 October 1991, attached to gastropod shell.

Diagnosis.

Capitulum regularly oval; carina simply bowed; tergum almost triangular; scutum subtriangular; upper latus large, perfectly calcified part irregularly triangular, constricted above; rostral latus quadrangular; peduncle at least half as long as capitulum.

Description.

Capitulum compressed; 13 plates completely covered by fine, hairless membrane. Peduncle half length of capitulum, stout, cylindrical, armed with small, transversely elongated plates. Scutum subtriangular, lateral margin excavated with tooth above excavation blunt, short, simple; tergum almost triangular, scutal margin excavated, but not very boldly, occludent margin slightly, regularly convex outwards. Carina simply bowed, umbo subterminal, in contact with terga above or just entering between them. Cirrus I unequal, anterior ramus oval, posterior ramus slender, long; cirri II-VI slender, long, rami almost equal lengths; cirrus VI with long, slender caudal appendages. Maxillule slightly notched, two major setae on upper side; mandible with four teeth. Measurements of specimen: height of capitulum 18.88 mm, width 11.41 mm, thickness 6.30 mm; length of peduncle 11.45 mm, width 4.89 mm.

Distribution.

Gulf of Oman, Arabian Sea, Sri Lanka, Japan ( Chan et al. 2009b). In this study, Annandaleum laccadivicum was found at Tanimbar Island, Indonesia.

Type locality.

Laccadive Sea, 2,077 m depth; on living shells of Dentalium (Annandale 1906).

Figures

Figure 15. Annandaleum laccadivicum (Annandale, 1906) (MNHN-IU- 2019 - 4931). a. left lateral view showing the capitulum and peduncle; b. right lateral view showing the capitulum and peduncle; c. rostral view showing the capitulum and peduncle; d. carinal view. Scale bar: 5 mm (a-d).