The advertisement call of the treefrog Nyctimantis rugiceps Boulenger, 1882 (Anura: Hylidae), with notes on its natural history and toxicity.

Nyctimantis rugiceps Boulenger, 1882 (Fig. 1A) is a Neotropical treefrog (Duellman Trueb 1976; Faivovich et al. 2005) known only from disjunct localities in Amazonian Colombia, Ecuador, and Peru (Pérez-Villota et al.