FIGURE 1 in The advertisement call of Xenohyla truncata (Anura: Hylidae), an endangered treefrog endemic to coastal Rio de Janeiro, Brazil

FIGURE 1. Spectrogram and oscillogram of the advertisement calls of Xenohyla truncata (A) and spectrogram and oscillogram of the advertisement calls of Xenohyla eugenioi (B) projection of four Xenohyla truncata calls in blue and four Xenohyla eugenioi calls in red, on the PCA ordination axes, each point represents a sampled call (C). Hypothetical configurations of semireference points of the minimum (D) and maximum (E) scores of PC1.