Arius maculatus

Johari, Adibah, Kocsis, László, Roslim, Amajida & Haziq, Ilman, 2025, Otolith morphometric analysis of North Bornean Ariidae (Siluriformes): new insights and taxonomic implications, Zootaxa 5660 (4), pp. 451-474 : 459

Arius maculatus (n= 12) ( Fig. 5 , Supplementary data 5)

These lapilli have three pronounced angular-like points at the postero-mesial, antero-mesial, and antero-distal margins, making them appear triangular. Their antero-mesial projection (Amp) is subtle, and they have compact curved sulculus lapilli (Sl). Their mesial dents (Md) (the “valleys” along the outer rim of the mesial margin) are subtle, their mesial notch (Mn) is compressed, and they have deep incisura linea basalis (ILb).

Figures

FIGURE 5. Left lapilli otolith of ariid taxa with elongated otolith. 1: Arius maculatus; 2: Arius oetik; 3: Arius venosus; 4: Batrachocephalus mino; 5: Cryptarius truncatus; 6: Kyataphisa nenga, a: Ventral view; b: Dorsal view; c: Mesial view, Scale bar: 1mm.