We report the first records of Scinax ruberoculatus Ferrão, Fraga, Moravec, Kaefer & Lima, 2018 in the state of Amapá, Brazil. We provide an updated distribution map of this species, comment on its occurrence in French Guiana and Suriname, and provide morphometric and bioacoustic data for a population from the municipality of Porto Grande, Amapá, including the first description of the species’ territorial call. This record from Porto Grande extends the distribution of S. ruberoculatus approximately 1430 km northeast from its type locality and helps to better understand its actual distribution. 

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In vertebrates leucism does not occur frequently in nature but has been recorded in amphibians and reptiles. Herein we report the first record of leucism in Tropidurus hispidus from north Brazil, Eastern Amazon. During fieldwork in an amphibian and reptile assessment, we photographed on a rocky surface and leaf litter an individual T. hispidus with leucism.

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The genus Dendropsophus Fitzinger contains 108 recognized species (Frost 2020) distributed in nine species groups according to Faivovich et al. (2005). However, recent phylogenetic analysis recognized the presence of nonmonophyletic groups (e.g., Wiens et al. 2010; Fouquet et al. 2011; Motta et al. 2012; Jansen et al. 2019) suggesting that the relationships among species of Dendropsophus require careful revision. Species of this genus are distributed in the tropical and subtropical South America, including Trinidad, southward to northern Argentina and Uruguay and northward to Central America and tropical southern Mexico (Duellman et al. 2016; Frost 2020). Dendropsophus haraldschultzi (Bokermann) was described in the area of Santa Rita do Weill, municipality of São Paulo de Olivença, Amazonas State, Brazil. Adult individuals of D. haraldschultzi are small sized frogs (males 18–22 mm and females 22–25 mm; Rodríguez & Duellman 1994) with tuberculate skin on dorsal surfaces, denser on the head. They are found near open ponds and permanent large streams or in floating meadows along the Amazon river (Bokermann 1962; Rodríguez & Duellman 1994; Böning et al. 2017) and have been also found along the Amazon River Valley in the Brazilian states of Pará and Amapá (Missassi et al. 2017), and in Peru and Colombia. Bokermann (1962) and later authors (e.g., Lutz 1973) considered this species without evident taxonomic affinities. Currently, D. haraldschulzi is not assigned to any species group within the genus (Faivovich et al. 2005).

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