Fig. 10. Spintherobolus papilliferus, MNRJ 4237 in Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil

Fig. 10. Spintherobolus papilliferus, MNRJ 4237, female, 34.7 mm SL, head region, left side, Brazil, São Paulo, rio Ipiranga. Rows of neuromasts occur over the infraorbital, preopercular, and opercular region. These are distributed in shallow grooves that can be seen in the photograph. The neuromasts are also distributed on the scale borders posterior to the head and operculum but these are hard to distinguish from dark chromatophores in the photograph. A row of neuromasts along the ventral border of the dentary is hidden in a deep groove. The small dark dots arranged in rows are the neuromast patterns over the face and opercular region. In the region ventral to the pectoral fin a few neuromasts can be seen partly bordering the scales. Such neuromasts are also present in the dorsal or back region. However, these are sometimes hard to distinguish from the somewhat larger dark chromatophores that often have somewhat indistinct borders. The rows of neuromasts are especially clear in the infraorbital region.