Armatobalanus allium ( Darwin, 1854 )

Shahdadi, Adnan, Sari, Alireza & Naderloo, Reza, 2014, A checklist of the barnacles (Crustacea: Cirripedia: Thoracica) of the Persian Gulf and Gulf of Oman with nine new records, Zootaxa 3784 (3), pp. 201-223 : 210

Armatobalanus allium ( Darwin, 1854)

( Figs 5 a–g)

Material examined. ZUTC-cirri 1186.

Persian Gulf. No record.

Gulf Oman. First record from the Gulf of Oman.

General distribution and habitat. Indo-West Pacific; attached to or embedded in scleractinian corals ( Jones et al. 2000).

Descriptive features and remarks. Shell conic, white, smooth or ragged ( Fig. 5 e), sheath white or pale purple. Radii and alae white, tergum and scutum ( Figs 4 a–d) white, tinged purple internally apically. Orifice small, oval or rhomboid. Basis of surface specimens flat, cup-shaped in embedded specimens. Scutum with adductor ridge not prominent, lateral depressor muscle pit not deep ( Fig. 5 c). Tergum with long beak, longitudinal furrow shallow ( Fig. 5 b). Labrum with two long teeth on each side of notch ( Fig. 5 g). Cirrus III with oblique teeth on anterior margin of segments ( Fig. 5 f). Largest specimen with basal diameter15.0 mm, height 11.87 mm, rostrocarinal diameter of orifice 3.18 mm.

The specimens were collected from a scleractinian coral ( Fig. 5 e) in Chabahar Bay (25° 19'N, 60° 37'E) ( Fig. 1 ).

Figures

FIGURE 1. Map of sampling sites of the species recorded in the Persian Gulf and the Gulf of Oman.

FIGURE 4. Tetraclita rufotincta Pilsbry, 1916, ZUTC-cirri 1148, Bandar-Lengeh, Persian Gulf, a. scutum, internal view; b. scutum, external view; c. tergum, internal view; d. tergum, external view; e. side view of the shell; f. specimens on an intertidal rock in Parsian, Persian Gulf.

FIGURE 5. Armatobalanus allium (Darwin, 1854), ZUTC-Cirri 1186, Chabahar, Gulf of Oman: a. tergum, internal view; b. tergum, external view; c. scutum, internal view; d. scutum, external view; e. specimens on horny coral; f. oblique teeth on segments of cirrus III; g. labrum.