Bioacoustics of Chiasmocleis haddadi

Comparisons with related species. Chiasmocleis haddadi can be distinguished from C. hudsoni (data in parentheses) by its smaller body size (SVL range = 12.9–14.5 vs. 15.2–18.5 in males); well-defined dorsolateral stripes enlarging posteriorly (absent or poorly defined); eyes with a red iris (copper, bronze or silverfish); upper surface of arms with brick-coloured blotches (dark brown with clear speckles); larger eyes (8.9–10.2% vs. 7.7–9.3% of SVL); thigh with small light speckles over a dark background (large dark blotches on the periphery over light in preservative to orange in life background); an advertisement call with more notes (6–8 vs 5 notes), longer silences among notes (0.035 vs 0.007 s ) and lower dominant frequency (4.57 vs 4.94 kHz). For comparisons with more distantly related species of Chiasmocleis see Peloso et al . (2014) . Natural history and distribution. All the observations of this species have been made during breeding events, near temporary pools on hilltops (as opposed to riverbeds pools). The males were found calling under the leaves of the leaf litter at the periphery of the water. The clutch (8– 12 eggs ) is deposited in the litter near the waterline. Tadpoles are exotrophic and pelagic ( Fig 4 ).