FIGURE 4 in A new species of Ituglanis Costa & Bockmann, 1993 (Siluriformes: Trichomycteridae) from Rio Ribeira de Iguape and upper Rio Tietê basins, southeastern Brazil

FIGURE 4. Lateral view of right suspensorium (lower jaw removed) and opercular series. A) Ituglanis amphipotamus, paratype, MZUSP 65750, 49.2 mm SL, showing the posterior margin of interopercular patch of odontodes in a vertical through the middle of the opercle, not reaching the opercular patch of odontodes. B) Ituglanis proops MZUSP 60255, 57.1 mm mm SL, showing the posterior margin of interopercular patch of odontodes in a vertical through the middle of opercular patch of odontodes. HY, hyomandibula; IO, interopercle; MT, metapterygoid; OP, opercle; PO, preopercle; QU, quadrate. Scale bars = 2mm.