Paralepas minuta (Philippi, 1836)

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

Paralepas minuta (Philippi, 1836) Figure 2

Alepas minuta Philippi, 1836: 254, pl. 12, fig. 23.

Alepas (Paralepas) minuta . - Weltner, 1897: 239.

Heteralepas (Paralepas) minuta . - Broch, 1927b: 18, fig. 4, pl. 1, figs 1, 2.

Paralepas minuta nipponica Utinomi, 1970: 342.

Paralepas minuta . - Stubbings 1967: 240. - Newman 1960: 109. - Chan et al. 2009b: 66, figs 55-57.

Material examined.

- Kei Islands: 6 specimens, MNHN-IU-2019-4882, Stn. CP 25, 05°30'S, 132°52'E, 336-346 m depth, 26 October 1991, attached to dead stem of gorgonian.

- Tanimbar Island: 4 specimens, MNHN-IU-2019-4883, Stn. CP 85, 09°22'S, 131°14'E, 240-245 m depth, 4 November 1991, attached to spine of sea urchin.

Diagnosis.

Capitulum yellowish with globular shape; anterior and posterior rami of cirrus V and VI similar in length.

Description.

Capitulum yellowish, globose, small-sized, externally smooth; orifice crenulated; peduncle rather short. Segments of rami of cirrus I wide, anterior ramus (9-segmented) shorter than posterior ramus (13-segmented); cirrus VI with short caudal appendage, 8-segmented. Penis annulated, setae sparsely distributed over most of surface, a few longer setae towards tip. Maxillule notched, two large and one small setae at upper angle; mandible with four major teeth; labrum concave, with numerous teeth. Measurements of specimen: height of capitulum 8.34 mm, width 6.67 mm, thickness 4.53 mm; length of peduncle 3.84 mm, width 2.60 mm.

Distribution.

Java Sea (Indonesia); Mediterranean Sea; West Africa; Indo-west Pacific: Indian Ocean; Australia; Malay Archipelago; Taiwan; Japan; Philippines; Northern New Zealand; 485-736 m depth; attached to spines of cidarids ( Jones and Hosie 2016). In this study, Paralepas minuta was found at Kei Islands and Tanimbar Island, Indonesia.

Type locality.

Mediterranean Sea ( Chan et al. 2009b).

Remarks.

Paralepas minuta (Philippi, 1836) can be distinguished from Paralepas ovalis (Hoek, 1907) by the presence of triangular scutal areas and from Paralepas nodulosa Broch, 1922 by the absence of "well defined, scanty, almost thorn-like warts" ( Broch 1922).

Figures

Figure 2. Paralepas minuta (Philippi, 1836) (MNHN-IU- 2019 - 4882). a. left lateral view, capitulum and peduncle; b. right lateral view, capitulum and peduncle; c. anterior view, orifice. Scale bar: 5 mm (a-c).