Some morphological characteristics of Alsodes vittatus A two adult males from the Tupuyuntué River showing the polymorphisms of vertebral line and coloration patterns (left, RTp1m; right, RTp2m) B secondary sexual characters (thickened forearms, patches of spines on chest and spines on fingers 1 and 2) of the male RTp2m C plantar view of the right foot of the same male D adult female from the Tupuyuntué River underwater (not collected) E juvenile from the Tupuyuntué River underwater (SVL = ~40 mm).