Pomadasys argenteus ( Forsskål, 1775 )

Lin, Chien-Hsiang, Li, Kuang-Ti & Chang, Chih-Wei, 2013, Identification Of Pomadasys Species (Pisces, Haemulidae) From An Archaeological Midden Site In Nankuanli East (Taiwan), Based On Otolith Morphology, Raffles Bulletin of Zoology 61 (1), pp. 293-302 : 297

Pomadasys argenteus ( Forsskål, 1775)

( Fig. 3a ; no. 1–2 in pl. 1)

Material examined. — 34 sagittae ( NMMBOL 0223, 3160–3162, 3776–3777, 3780–3792, 3825–3831, 3978–3985).

Description. — Shape oval, with convex medial face and slightly concave lateral face. Central portion thick. Dorsal margin with conspicuous angles pointing upwards in the middle and posterodorsally, whereas the ventral margin rounded and entire. Crista superior moderately- to welldeveloped along ostium and posterior cauda, and ridge-like along anterior cauda. A dorsal trough located above the crista superior. Crista inferior moderately developed along ostium and well developed along cauda. Ostium elongate, with rounded posteroventral corner. Cauda flexes near tip, and the direction of the crista inferior changes notably in this area. Ostium usually well developed, creating moderately wide excisura. Excisural notch absent.

Dimensions. — OL, 6.04–19.44 mm; OH, 4.57–14.64 mm; OT, 1.36–5.68 mm; OsL, 2.60–10.01 mm; OsH, 1.25–4.04 mm.

Diagnosis. — The elongate ostium and the absence of a notch differentiate P. argenteus from P. quadrilineatus and P. maculatus , respectively. The disrupted curvature and position of the cauda of P. argenteus is slightly different from P. kaakan .

Figures

Fig. 3. Medial surfaces of the right sagittae of Pomadasys argenteus, NMMBOL00223 (a); P. kaakan, NMMBOL01952 (b); P. maculatus, NMMBOL00719 (c); P. quadrilineatus, NMMBOL00799 (d). Scale bar = 1 mm.