We herein describe a new colorful species of Polychrus with a conspicuous sexual dimorphism from the dry forest of the northern portion of Región de La Libertad, Peru. Te new species differs from all other Polychrus species, in that this species has very small dorsal scales and thus a higher number of scales around mid body and in the mid dorsal line from behind the occipital scales to the level of the posterior edge of the thigh. Furthermore, we redescribe P. peruvianus whose original description is short and lacks information on intraspecifc variation and sexual dimorphism. Also, we add some information on intraspecifc variation and ecology of P. gutturosus. Finally, we synonymize P. spurrelli Boulenger with P. gutturosus. © Claudia Koch et al.