Tesseropora rosea (Krauss, 1848)

Pitriana, Pipit, Valente, Luis, von Rintelen, Thomas, Jones, Diana S., Prabowo, Romanus E. & von Rintelen, Kristina, 2020, An annotated checklist and integrative biodiversity discovery of barnacles (Crustacea, Cirripedia) from the Moluccas, East Indonesia, ZooKeys 945, pp. 17-83 : 17

Tesseropora rosea (Krauss, 1848) Figure 15a-e , Table 1: species no. 61

Conia rosea Krauss, 1848: 136.

Tetraclita rosea Darwin, 1854: 335, pl.10 fig. 3a-3d; Pilsbry 1916: 260, pl. 58 fig. 4.

Tesseropora rosea Newman & Ross, 1976: 47; Anderson and Anderson 1985: 89, figs 1-10; Jones and Anderson 1990: 13.

Material examined.

Ambon Island: 6 specimens, MZB Cru Cir 075, Rutong, 3°42'23.7"S, 128°16'08.9"E, coll. P. Pitriana, 14 Jan 2016; 1 specimen, MZB Cru Cir 076, Leahari, 3°42'45.3"S, 128°16'16.5"E, coll. P. Pitriana, 14 Jan 2016; 25 specimens, MZB Cru Cir 077, Liang, 3°30'13.3"S, 128°20'34.1"E, coll. P. Pitriana & D. Tala, 7 Sept 2016. Saparua Island: 25 specimens, MZB Cru Cir 078, Dermaga Ihamahu, 3°31'13.0"S, 128°41'14.9"E, coll. P. Pitriana & D. Tala, 11 Apr 2016; 4 specimens, MZB Cru Cir 079, Kulur, 3°29'48.5"S, 128°36'10.7"E, coll. P. Pitriana & D. Tala, 20 Sep 2016; 10 specimens, MZB Cru Cir 080, Porto, 3°34'58.2"S, 128°36'58.2"E, coll. P. Pitriana & D. Tala, 20 Sep 2016.

GenBank accession number.

COI gene (MK995370).

Diagnosis.

Shell with four plates; wall of the parietes with a single row of parietal pore; orifice with traces of pink in colour; oral cone relatively broad; mouthparts relatively large.

Description.

Shell steeply conical, whitish tinged pink, with longitudinal purple pinkish striations (Fig. 15a ); four parietal plates with single row of large, square tubes, often eroded in upper areas giving pillared appearance (Fig. 15b, c ); radii solid, well developed; orifice pentagonal in uneroded specimens, triangular in eroded specimens; basis mostly calcareous; scutum thick, articular furrow short, deep, articular ridge long, adductor ridge prominent, crests for lateral depressor faint; tergum with short, broad spur set close to basiscutal angle, wide articular furrow, carinal depressor crests prominent (Fig. 15d, e ); maxillule with two large setae at the lateral angle; mandible with four teeth, labrum shallowly concave in shape, teeth on each side. Basal length 9.7-25.6 mm, basal width 9.7-24.5 mm, height 4.4-13.0 mm. Orifice length 2.9-7.8 mm, orifice width 2.3-6.9 mm (measurements for 15 specimens are presented in Suppl. material 1: Table S14).

Distribution.

Tesseropora rosea was originally described from a specimen collected at Algoa Bay, South Africa ( Krauss 1848; Darwin 1854) and has since been recorded from Australia (SW and SE); Lord Howe Island and the Kermadec Islands (Jones 1990). In this study, T. rosea was found on Ambon Island (at Rutong, Leahari, and Liang) and Saparua Island (at Ihamahu, Kulur, and Porto) on stone and mollusc shells (a map with the occurrence of Tesseroppora rosea in the Moluccas is shown in Suppl. material 1: Fig. S4).

Remarks.

According to Anderson and Anderson (1985), T. rosea feeds in different ways, extending the cirral fan only in response to the fast water currents. Thus, T. rosea cannot survive in areas with a low current velocity. Tesseropora rosea exhibits a wide distribution although the species is represented by relatively few specimens.

Figures

Figure 15. Tesseropora rosea (Krauss, 1848) (MZB Cru Cir 077 - 1) a upper view b lower view c side view d external view of scutum and tergum e internal view of scutum and tergum. Scale bars: 6 mm (a-c); 2 mm (d, e).