Variation in dorsal coloration of the paratypes and referred material of Ingerophrynus chrysolophus sp. nov. from Wat Tham Sanook, Tha Sae, Chumphon, Thailand, in life. Paratypes: adult male, ZMMU A-8034, ZMMU A-8039; adult female, ZMMU A-8031–8033, ZMMU A-8035–8037. Referred material: subadult topotypic males, ZMMU A-8038, RIM NAP-11589; subadult topotypic females, ZMMU A-8040–8044; subadults (sex not determined), ZMMU A-8045, ZMMU A-8046, RIM NAP-11591, RIM NAP-11593. Photographs by N.A. Poyarkov.