Catalogue of distribution of lizards (Reptilia: Squamata) from the Brazilian Amazonia. IV. Alopoglossidae, Gymnophthalmidae Author Ribeiro-Júnior, Marco A. Author Amaral, Silvana text Zootaxa 2017 4269 2 151 196 journal article 33001 10.11646/zootaxa.4269.2.1 24db334d-8e18-4158-a02b-84e08c9fefd3 1175-5326 581975 DDD8F72E-C27A-4B0F-82EA-17B01B93ED9C Rondonops xanthomystax Colli, Hoogmoed, Cannatella, Cassimiro, Gomes, Ghellere, Nunes, Pellegrino, Salerno, Souza & Rodrigues, 2015 Type-locality. Left bank of Rio Abacaxis , São Sebastião, Borba ( 4°18'32"S , 58°38'11"W ), Amazonas , Brazil . Pertinent taxonomic references. Colli et al . (2015), Goicoechea et al . (2016). Distribution and habitat. Rondonops xanthomystax is endemic to southern Brazilian Amazonia , distributed between lower Madeira River and upper–middle Tapajós river system ( Fig. 17 ). In Brazil , it is known from the states of Amazonas and Pará . Rondonops xanthomystax is terrestrial and diurnal, inhabits primary terra firme forest with open understory, high abundance of palm trees, and dense leaf litter, where it is found among leaf litter; one specimen was collected by a glue trap about 1.7 m high on a diagonally-oriented fallen tree trunk (Colli et al . 2015).