Lepas anserifera Linnaeus, 1767

Trivedi, Jigneshkumar N., Doshi, Mahima, Patel, Krupal J. & Chan, Benny K. K., 2021, Diversity of intertidal, epibiotic, and fouling barnacles (Cirripedia, Thoracica) from Gujarat, northwest India, ZooKeys 1026, pp. 143-178 : 143

Lepas anserifera Linnaeus, 1767 Figures 2K , 14

Examined material.

Five specimens (CL: 11.39-22.13 mm), LFSc.ZRC-163, Vankbara beach, Diu (20°42.88'N, 70°53.16'E), 12 December 2019, Gujarat, India, fishing boat surface, leg. M. Doshi.

Diagnosis

(modified from Chan et al. 2009). Capitulum five-plated, plates thick, broadly triangular, slightly compressed, white, surface striated with radiating lines (Fig. 2K ). Tergum quadrilateral, wider than high, apex beaked but sometimes rounded off. Scutum fan-shaped, occludent margin strongly convex. Carina forked, produced below the base of scutum. Maxilla globular (Fig. 14A ). Maxillule not clearly notched, cutting edge with several dense setal aggregations (Fig. 14B ). Mandible with five teeth excluding inferior teeth, lower angle pectinate (Fig. 14C-E ). Mandibulatory palp triangular, setae present on inferior margin (Fig. 14F ). Labrum concave bearing fine teeth (Fig. 14G, H ).

Remarks.

The specimens examined in the present study agree with the descriptions given by Fernando (2006) and Chan et al. (2009).

Worldwide distribution.

This species has a cosmopolitan distribution in tropical and temperate seas ( Chan et al. 2009; Jones and Hosie 2016; Schiffer and Herbig 2016) and in India ( Annandale 1909).

Distribution in India.

This species has been reported from Gujarat ( Parmar et al. 2018; present study), Tamil Nadu ( Sundararaj 1927), Andhra Pradesh ( Nilsson-Cantell 1938), Odisha (formerly Orissa) ( Annandale 1909), West Bengal ( Annandale 1909), and Andaman and Nicobar Islands ( Annandale 1909).

Figures

Figure 2. Gujarat barnacles A Striatobalanus tenuis (Hoek, 1883) on gastropod shell (Murex ternispina Lamarck, 1822) B top view of Striatobalanus tenuis (BD: 11.28 mm) LFSc. ZRC- 157 C external and internal view of scutum and tergum D Megabalanus tintinnabulum on shores LFSc. ZRC- 182 E external and internal view of scutum and tergum F Amphibalanus amphitrite (Darwin, 1854), top view, (BD: 12.38 mm) LFSc. ZRC- 181, external and internal views of scutum and tergum G Amphibalanus reticulatus (Utinomi, 1967), top view, (BD: 14.99 mm) LFSc. ZRC- 158, external and internal views of scutum and tergum H Chelonibia testudinaria (Linnaeus, 1758) on crab Portunus sanguinolentus I Chelonibia testudinaria (Linnaeus, 1758), top view (BD: 5.33 mm) LFSc. ZRC- 159, internal view of scutum and tergum J Lepas anatifera Linnaeus, 1758, (CL: 16.39 mm) LFSc. ZRC- 162, a. Side view of capitulum K Lepas anserifera Linnaeus, 1758, (CL: 16.28 mm) LFSc. ZRC- 183, Side view of capitulum.

Figure 14. Lepas anserifera Linnaeus, 1758, (CL: 16.28 mm) LFSc. ZRC- 183, Light microscopy on mouth parts A maxilla B maxillule C mandible D close up on the inferior angle of mandible E close up on the teeth of mandible F mandibulatory palp G labrum H close up view on the cutting edge of labrum, showing the teeth. Scale bars in µm.