Hyloxalus idiomelus (Rivero's rocket frog) is a species of frogs in the family Dendrobatidae. It is endemic to the northern part of the Cordillera Central of northern Peru.
Males measure 20–25 mm (0.79–0.98 in) and females 23–28 mm (0.91–1.10 in) in snout–vent length. The body is robust. Skin on dorsum is smooth to shagreen. Dorsum is dull tan to rich orange-brown to grayish tan in colour, with green tint in some places. Dorsolateral stripe is pinkish tan, yellowish orange, or cream coloured. Free-swimming tadpoles are up to 43 mm (1.7 in) in total length, whereas tadpoles transported on the back of their father measure 10–12 mm (0.39–0.47 in).
