Scinax cruentommus (Anura: Hylidae) in the upper Rio Negro drainage, Amazonas state, Brazil, with the redescription of its advertisement call

Scinax cruentommus (Anura: Hylidae) in the upper Rio Negro drainage, Amazonas state, Brazil, with the redescription of its advertisement call. We provide the first record for Scinax cruentommus from the upper Rio Negro, Amazonas state, Brazil. We also redescribe its advertisement call and make acoustic comparisons with available data for other species of the Scinax ruber Clade in the Amazon Basin. With the assessment of further data on S. cruentommus, the acoustic traits have supplemented its congeneric diagnosis in comparison with the other Amazonian species of the S. ruber Clade besides the features proposed in its original description.