Rhinella hoogmoedi Caramaschi & Pombal

Oliveira, Marianna Isabella Rosa Rodrigues De, Weber, Luiz Norberto & Napoli, Marcelo Felgueiras, 2013, Internal oral morphology in larvae of the genus Rhinella Fitzinger, 1826 (Amphibia, Anura, Bufonidae), Zootaxa 3745 (5), pp. 501-523 : 507

Rhinella hoogmoedi Caramaschi & Pombal

Material: Five specimens (stage 31).

Buccal floor ( Fig. 2E ): Ovoid buccal floor, wider than long. One pair of large papillae, concave on the anterior surface, apex with small projections and occupying a large part of the oral cavity entrance. There are eight small infrarrostral projections on each side. Four short lingual papillae with rounded apex; the anterior pair is smaller and centrally; the posterior pair is slightly larger and both lateralized. These papillae are arranged in tow transversal and parallel rows. The BFA is delimited by nearly 20 papillae in different size, and tapered apex, branched, bifid and truncated, with nearly 30 pustules distributed between the papillae. There are no structures in the anterior region of the BFA. The buccal pockets are transversely oriented. The ventral velum is long and U-shaped; undulated and tumid margin, with glandular appearance, constituted by secretory pits and slightly undulated in the middle portion. Buccal roof ( Fig. 2F ): Ovoid buccal roof, wider than long. Prenarial arena has a ridge formed by three higher central projections and a low lateral projection. Large choanae, elliptical and obliquely oriented; the posterior valve is high and the anterior has six prenarial papillae on the inner edge and narial valve projections are present. The distance between the choanae is equivalent to median ridge width. The postnarial arena has a ridge formed apparently by two or three papillae united by the base, with smooth surface, irregular apex, flattened and arranged forming an inverted " V " design. Median ridge is trapezoid-shaped; flattened and anterior margin irregular. The lateral ridge papillae have the apex wider than the base, flattened, apex with three to four digitiform secondary branches in different size and anterior margin of the branches with slight irregularities. The BRA is delimited by three short papillae on each side, tapered apex and arranged on the BRA lower side. There are nearly 20 pustules evenly distributed in the middle region of the BRA. Conspicuous glandular zone, thickened in the middle portion. The dorsal velum is short; undulated margin, with the lateral fold showing a glandular appearance and globular projections in the middle region.

Figures

FIGURE 2. Scanning electron micrographs of the internal oral morphology. Rhinella granulosa (A) floor and (B) roof, stage 36, UFBA11362; R. henseli (C) floor and (D) roof, stage 35, DZSJRP 1576.4; R. hoogmoedi (E) floor and (F) roof, stage 34, UFBA 11105.