Cryptarius truncatus

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 : 462

Cryptarius truncatus (n= 22) ( Fig. 5 , Supplementary data 6)

The mesial shallow depression of these lapilli appears to be the widest out of all the taxa. Most of them have noticeable Md, particularly at the middle section of their mesial margin rim. Their mesial shallow depression (Msd) appears to be quite thick. Their Amp is quite prominent, and some (n= 12) have compact curved Sl, while the others (n= 10) have tubular curved Sl. They have compact Mn, and deep 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.