Leptodactylus cf. mystaceus

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 : 24

Leptodactylus cf. mystaceus

( Fig. 8C )

The species-pair Leptodactylus mystaceus (Spix, 1824) and Leptodactylus didymus Heyer, García-Lopez, & Cardoso, 1996 is totally cryptic with regard to external morphology, only being phenotypically distinguished by advertisement calls (pulsed in L. mystaceus and nonpulsed in L. didymus ) ( Heyer et al., 1996). Leptodactylus didymus is known to occur at southwestern Amazonia, with punctual records at the lower Juruá River region ( Heyer et al., 1996), while L. mystaceus is more widely distributed in Amazonia ( Heyer et al., 1996; Silva et al., 2020). However, the widest knowledge gap on the distribution of this species pair is spatially congruent to where they are potentially sympatric,including our study area( Heyer et al., 1996; Silva et al., 2020). As external morphology was the only available information for the assignment of taxonomic status in this case, we opt to be conservative until acoustic vouchers are obtained in the focal area.

Figures

Figure 8. Amphibians recorded at the Reserva Extrativista do Baixo Juruá.(A) Engystomops petersi; (B) Leptodactylus discodactylus; (C) Leptodactylus cf.mystaceus; (D) Leptodactylus pentadactylus; (E) Leptodactylus petersii; (F) Leptodactylus rhodomystax; (G) Leptodactylus stenodema; (H) Lithodytes lineatus. Photographs by VTC (A-C,F-H) and LJCLM (D, E).