Lepas anserifera Linnaeus, 1767

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

Lepas anserifera Linnaeus, 1767 Figure 5a-n , Table 1: species no.13

Anatifa striata Bruguière, 1789: pl. 166 fig. 3.

Pentalasmis anseriferus : Brown 1844: pl. 51 fig. 1.

Lepas anserifera Linnaeus, 1767: 1109; Darwin 1852: 81, pl. 1 fig. 4; Hoek 1907: 2; Hiro 1937a: 57, fig. 48; Utinomi 1949: 20; Stubbings 1967: 237; Newman 1971: 32, fig. 1; Dong et al. 1982: 73; Zevina et al. 1992: 14, fig. 6; Igic 2007: 37, fig. 10; Chan et al. 2009a: 45, fig. 34; Keable and Reid 2015: 266.

Material examined.

Ambon Island: 5 specimens, MZB Cru Cir 056, Galala, 3°41'22.2"S, 128°10'52.6"E, coll. P. Pitriana & D. Tala, 6 Sep 2016; 8 specimens, MZB Cru Cir 057, Laha, 3°43'22.5"S, 128°05'02.5"E, coll. P. Pitriana & D. Tala, 5 Sep 2016; 74 specimens, MZB Cru Cir 058, Suli, 3°37'02.0"S, 128°16'31.6"E, coll. Adin, 19 Sep 2017; 93 specimens, MZB Cru Cir 059, Tial, 3°38'10.2"S, 128°20'46.9"E, coll. Adin, 19 Sep 2017. Pombo Island: 5 specimens, MZB Cru Cir 060, Pombo, 3°31'55.5"S, 128°22'28.8"E, coll. P. Pitriana & D. Tala, 8 Sep 2016. Seram Island: 13 specimens, MZB Cru Cir 061, Lepas Pantai Kawa, 2°57'32.5"S, 128°05'33.4"E, coll. P. Pitriana & D. Tala, 19 Sep 2017; 10 specimens, MZB Cru Cir 062, Desa Murnaten, 2°51'48.8"S, 128°20'32.3"E, coll. P. Pitriana & D. Tala, 20 Sep 2017; 10 specimens, MZB Cru Cir 063, Desa Kasie, 2°51'05.5"S, 128°32'54.1"E, coll. P. Pitriana & D. Tala, 20 Sep 2017; 10 specimens, MZB Cru Cir 064, Dermaga Pelita Jaya, 3°00'13.5"S, 128°07'09.2"E, coll. P. Pitriana & D. Tala, 21 Sep 2017. Saparua Island: 19 specimens, MZB Cru Cir 065, Negeri Mahu, 3°31'52.9"S, 128°41'12.4"E, coll. P. Pitriana & D. Tala, 11 Apr 2016.

GenBank accession numbers.

COI gene (MK995373-MK995375), 18S (MK981387-MK981388).

Diagnosis.

Capitulum with five completely calcified plates; surfaces striated with radiating lines; scuta with conspicuous growth lines; scutal margin of terga without notch, occluding margin of scutum strongly convex and swollen; carina apex extending to tergum, base of carina forked; filamentary appendages and caudal appendage present.

Description.

Five capitular plates, closely approximate, white, slightly furrowed, terga sometimes strongly pectinated, occluding margin arched, protuberant (Fig. 5a, b ). Scutum with well developed, strong internal umbonal tooth, left internal umbonal tooth small, or mere ridge; carina produced below base of scutum as fork, apex pointed (Fig. 5c-f ); 5-6 filamentary appendages on each side, one on side of prosoma below base of pedicel of cirrus I, four others placed in pairs beneath basal segment of pedicel of cirrus I, lowest posterior filament of the four generally larges (Fig. 5g ); caudal appendages small, smooth, curved, claw-like, tip pointed; mandible with five teeth excluding inferior angle, lower angle pectinate (Fig. 5j ), labrum concave, toothed (Fig. 5l-m ). Basal diameter of capitulum 2.0-7.2 mm; capitular height 8.1-14.8 mm; total height 14.2-31.9 mm. Scutal width 4.7-11.3 mm; scutal length 6.3-12.5 mm. Tergal width 4.7-11.3 mm; tergal length 4.3-9.6 mm (measurements for 25 specimens are presented in Suppl. material 1: Table S4).

Distribution.

Lepas anserifera is a cosmopolitan, pelagic species occurring in tropical and temperate oceans ( Jones et al. 2001). In this study, Lepas anserifera was found on the islands of Ambon (at Suli, Tial, Galala, Laha), Pombo, Seram (at Lepas Pantai Kawa, Desa Murnaten, Desa Kasie, Dermaga Pelita Jaya), and Saparua (at Negeri Mahu). Lepas anserifera was found attached to mangroves, stone ship charts and ship walls, port poles, and shells of Megabalanus zebra (a map with the occurrence of Lepas anserifera in the Moluccas is shown in Suppl. material 1: Fig. S3).

Remarks.

Lepas anserifera can be easily recognized by the presence and positions of the 5-6 filamentary appendages and the curved caudal appendages ( Igić 2007).

Figures

Figure 5. Lepas anserifera Linnaeus, 1767 (MZB Cru Cir 058 - 2) a side view showing the capitulum and peduncle b side view showing the carina c external view of scutum d internal view of scutum e external view of tergum and carina f internal view of tergum and carina g cirrus I h maxilla i maxillule j mandible k mandibular palp l labrum m close up view on the teeth of labrum n penis. Scale bars: 4 mm (a-b); 3 mm (c-f); 1 mm (g, n); 0.5 mm (h-m).