Fig. 16 in A new genus and two new species of Stevardiinae (Characiformes: Characidae) with a hypothesis on their relationships based on morphological and histological data

Fig. 16. Scanning electron micrograph of dorsal cranium region. Arrows evidencing the groove in the head above the eyes; A: Diapoma terofali (MCP 11491, 70x magnification) groove reduced, shallow, not well delineated and with only few neuromasts; B: Hysteronotus megalostomus (MZUSP 85978, 50x magnification) groove developed, depth, well delineated and with numerous neuromasts. Anterior to right.