Pristimantis cf. diadematus

Moraes, Leandro João Carneiro de Lima, Rainha, Raíssa do Nascimento, Werneck, Fernanda de Pinho, Oliveira, Alan Filipe de Souza, Gascon, Claude & Carvalho, Vinícius Tadeu de, 2022, Amphibians and reptiles from a protected area in western Brazilian Amazonia (Reserva Extrativista do Baixo Juruá), Papéis Avulsos de Zoologia 62, pp. 1-34 : 23

Pristimantis cf. diadematus

A morphologically diagnosable subgroup within the Pristimantis unistrigatus (Günther, 1859) species group shares very large digital tips, relatively short hind limbs, tuberculate dorsum, a "W″ scapular pattern, and prominent leg barring ( Hedges & Schlüter,1992). However, this subgroup ( Pristimantis diadematus series) was evidenced to be non-monophyletic ( Hedges et al., 2008).We recorded at the RBJ one species attributed to this morphological subgroup, with its characteristic mostly fitting in the diagnosis of Pristimantis eurydactylus Hedges & Schlüter, 1992 , notably by possessing a visible tympanum and a smooth dorsum. However, P. eurydactylus is little known and much of its associated information comes only from its original description ( Hedges & Schlüter, 1992). In addition, its diagnostic characteristics are quite subject to variation and is difficult to elucidate the taxonomic and geographic boundaries between P. eurydactylus and Pristimantis diadematus Jiménez de la Espada, 1875 , which is more widely distributed in the Amazonian Andean foothills and adjacent lowlands ( Jiménez de la Espada, 1875; Frost, 2022). Without a finer taxonomic resolution and new field data, it is impossible to assign a more precise taxonomic status to this RBJ′s population. In addition to the aforementioned characters, P. cf. diadematus has a belly marked by contrasting small dark dots and greenish flanks in life.