Synapturanus mirandaribeiroi, Nelson & Lescure, 1975

Schiesari, Luis, Rossa-Feres, Denise De Cerqueira, Menin, Marcelo & Hödl, Walter, 2022, Tadpoles of Central Amazonia (Amphibia: Anura), Zootaxa 5223 (1), pp. 1-149 : 101-102

Synapturanus mirandaribeiroi

External morphology. Description based on six tadpoles at Stage 42 (INPA-H 15838). Total length 15.6 ± 0.5 mm (N = 6). Body ovoid in dorsal view and globular in lateral view ( Fig. 67A, B ). Snout truncated in dorsal view and rounded in lateral view. Eyes positioned and directed laterally. Nostrils unperforated but externally visible as rounded whitish spots positioned dorsolaterally. Mouth terminal, as a simple slit. Jaw sheaths, papillae, and tooth rows absent. Spiracle absent. Vent tube absent. Caudal musculature of moderate width; in lateral view gradually tapering to a pointed tip. Dorsal fin shallow, originating at the tail-body junction, slightly convex; ventral fin shallow, slightly convex. Tail tip rounded.

Colour. In preservative dorsum greyish and venter cream; chromatophores distributed on the head, dorsal region of the body and on dorsal surfaces of the hind limbs and forelimbs ( Menin et al. 2007). In life head and dorsum reddish-brown becoming brighter laterally, with a mottled brown pattern on the flanks and limbs; venter white to cream; tail fins transparent; caudal musculature light brown ( Menin et al. 2007).

Metamorphs. With brown dorsum, flanks comparatively brighter and a mottled brown pattern on the flanks and limbs ( Menin et al. 2007).

Natural history. Clutches contain from 5 to 9 creamy eggs ( Menin et al. 2007). Eggs are deposited in burrows about 5-10 cm below the soil surface in terra-firme forests; development is endotrophic and tadpoles hatch at Stage 42 ( Menin et al. 2007).

Comments. Tadpoles of S. mirandaribeiroi from Central Amazonia were illustrated as S. mirandaribeiroi / S. salseri by Hero (1990) and described by Menin et al. (2007). Tadpoles illustrated by Hero (1990) differ from those herein characterized by presenting a pointed tail tip. No morphological variation was detected between tadpoles herein characterized and those described by Menin et al. (2007).

PHYLLOMEDUSIDAE . Tadpoles of the phyllomedusid species occurring in Central Amazonia belong to two genera with free-swimming tadpoles. The morphology of these tadpoles is very similar.

Genus Callimedusa . Only one species of Callimedusa is found in Central Amazon.

Figures

FIGURE 67. Tadpole of Synapturanus mirandaribeiroi (INPA-H 15838) at Stage 42: (A) lateral view and (B) dorsal view (scale = 10 mm).