Lynchius flavomaculatus (vernacular name: yellow-spotted Andes frog) is a species of frog in the family Craugastoridae. It is found in the Andes of southern Ecuador and northern Peru.
Adult males measure 24–35 mm (0.9–1.4 in) and adult females 35–44 mm (1.4–1.7 in) in snout–vent length. The snout is rounded. The tympanumis distinct. The fingers are long and slender and lack webbing and lateral fringes; the tips are narrowly round and the fingers I–II have pads. Also the toes lack webbing and lateral fringes; they have narrowly rounded tips. Skin on dorsum of head, body, and limbs is shagreen; there are few scattered tubercles, particularly posteriorly. The dorsum is mottled dark yellow and reddish brown. There are indistinct yellow bars on the limbs, head, and upper lips, as well as dark brown transversal bars on the limbs. The flanks are yellow and have brown spots. The venter is grayish brown. There are yellow blotches on the belly, ventral surfaces of limbs, groin, and anterior surfaces of thighs. The iris is pale green and has black reticulations.
