Scinax garbei (Miranda-Ribeiro, 1926)

Schiesari, Luis, Rossa-Feres, Denise De Cerqueira, Menin, Marcelo & Hödl, Walter, 2022, Tadpoles of Central Amazonia (Amphibia: Anura), Zootaxa 5223 (1), pp. 1-149 : 71-72

Scinax garbei

External morphology. Description based on three tadpoles at Stages 35 and 37 (LCS 598/2). Total length 25.3 mm (Stage 35) and 28.0 mm (Stage 37). Body elongately ovoid in dorsal view and triangular/depressed in lateral view ( Fig. 41A, B ). Snout rounded in dorsal and lateral views. Eyes small, positioned and directed laterally. Nostrils small, circular, laterally positioned, near to eyes, with opening anterolaterally directed, without a projection on the marginal rim. Oral disc ( Fig. 41C ) anteroventral, ventrally emarginate; marginal papillae triangular, uniseriate, with wide dorsal and ventral gaps. Submarginal papillae present laterally. LTRF 2(2)/3(1); A1 and A2 of the same length; P2 slightly longer than P1; P3 short and located on the median projection of the posterior labium (labial arm). Anterior jaw sheath narrower than posterior jaw sheath, both finely serrated; anterior jaw sheath arch-shaped, posterior jaw sheath V-shaped. Spiracle single, sinistral, conical, short and wide, posterodorsally directed, opening in the posterior third of the body, with the centripetal wall fused to the body wall and longer than the external wall. Vent tube dextral, fused to the ventral fin, with a dextral opening. Caudal musculature of moderate width; in lateral view gradually tapering to a pointed tip. Dorsal fin of moderate height, originating on the posterior third of the body, convex; ventral fin of moderate height and convex. Tail tip pointed.

Colour. In preservative body and caudal musculature light cream; fins translucent; caudal musculature and fins with brown flecks. In life body and tail transparent green; tail completely transparent with a darker reticulation over the fins; venter silver; eye red.

Natural history. Eggs were not observed in Central Amazonia. Gravid females of S. garbei from Peru contain from 551 to 590 pigmented ovarian eggs ( Duellman 2005) and those from Ecuador contain from 445 to 905 eggs ( Duellman 1978). Eggs are deposited as a surface film ( Duellman 1978) in várzea floodplain lakes or in temporary ponds of terra-firme forests, forest edge and deforested land.

Comments. S. garbei tadpoles were described by Duellman (1978) from Ecuador, and by Duellman (2005) from Peru. Tadpoles described by Duellman (1978, 2005) differ from those herein characterized by presenting nostrils midway between the snout and the eyes, oral disc with lateral emarginations, and LTRF 2(2)/3. Those described by Duellman (2005) also differ from those herein characterized by presenting nostrils ovoid.

Figures

FIGURE 41. Tadpole of Scinax garbei (MZUSP 62412) at Stage 36: (A) lateral view, (B) dorsal view (scale = 10 mm), and (C) oral disc (scale = 1 mm).