Heteralepas japonica (Aurivillius, 1892)

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

Heteralepas japonica (Aurivillius, 1892) Figure 1

Alepas japonica Aurivillius, 1892: 125. - 1894: 28, pl. II figs 14, 15, pl. VIII, figs 3, 7, pl. IX, fig. 3.

Alepas indica Gruvel, 1901: 259. - 1905a: 162, fig. 179.

Heteralepas (Heteralepas) japonica . - Pilsbry, 1907a: 101.

Heteralepas (Heteralepas) japonica var. alba Krüger, 1911: 34, pl. 1, fig. 2b.

Heteralepas (Heteralepas) dubia Broch, 1922: 288, fig. 38.

Heteralepas japonica . - Pilsbry 1911: 71, fig. 4. - Zevina et al. 1992: 31, fig. 19. - Chan et al. 2009a: 61. - Chan et al. 2009b: 88-91, figs 2A-D, 3A-D, 4, 5. - Pitriana et al. 2020: 12, fig. 3.

Material examined.

Tanimbar Island: 1 specimen, MNHN-IU-2019-4877, stn. CP 46, 08°01'S, 132°51'E, 271-273 m depth, 29 October 1991.

Diagnosis.

Capitulum rounded, plates absent; wall of capitulum thick; orifice crenulated with no more than two crests on carinal region; cirrus VI with caudal appendage; maxillule strongly notched.

Description.

Capitulum and peduncle yellowish. Orifice slightly protuberant, crenulated, occupying one half to one third capitular length, parallel to or at oblique angle to capitulum; integument thick, chitinous. Cirrus I with anterior rami (20-segmented) shorter than posterior rami (25-segmented); cirrus VI with long caudal appendage, 24-segmented, 2/3 length of anterior ramus. Mandibles with four large teeth excluding inferior angle; maxillule strongly notched, two large setae at upper angle, blade-shaped setae on cutting margin; labrum concave with numerous teeth. Measurements of specimen: height of capitulum 18.50 mm, width 12.82 mm, thickness 5.97 mm; length of peduncle 15.26 mm, width 5.55 mm.

Distribution.

Singapore; Indo-west Pacific: Indian Ocean; Australia; Malay Archipelago; Vietnam; Condor Island; South China Sea; East China Sea; Taiwan, Philippines; South Japan; NE New Zealand; fouling hard rock substrata, crabs, gorgonians, antipatharians, deep-sea cables; 48-500 m depth ( Jones and Hosie 2016). Recently, the species has also been recorded from the Lifamatola Sea and the Halmahera Sea, Indonesia ( Pitriana et al. 2020). In this study, Heteralepas japonica was found at Tanimbar Island, Indonesia.

Type locality.

Hirado Strait, Japan, 146 m depth ( Aurivillius 1892).

Figures

Figure 1. Heteralepas japonica (Aurivillius, 1892) (MNHN-IU- 2019 - 4877). a. left lateral view showing the capitulum and peduncle; b. right lateral view showing the capitulum and peduncle; c. anterior view, orifice; d. posterior view, capitulum and peduncle. Scale bar: 6 mm (a-d).