Geographical distribution of killifishes of the Melanorivulus pictus species group in the rivers draining the south-eastern slope of the Caiapó range and the adjacent middle Rio Paraná Basin. Blue triangle: M. vittatus; light green dot: M. scalaris; light green triangle: M. linearis; pink lozenges: M. faucireticulatus; pink triangle: M. egens; purple dot: M. nigropunctatus; purple stars: M. proximus; red square: M. rutilicaudus; red triangle: M. ofaie; yellow dots: M. nigromarginatus; yellow stars: M. formosensis.