Common Lesser Toad

materials_examined

Material: Two specimens (stage 32), one specimen (stage 36). Buccal floor (Fig. 2 A): Ovoid buccal floor, wider than long. Two pairs of infralabial papillae, the most anterior pair is short, centralized and with irregular apex, the second pair is elongated, concave on the anterior surface, with irregular apex and occupying a large part of the oral cavity entrance. There are three small infrarrostral projections on each side. Four lingual papillae, with equivalent size, all elongated and with bifurcated apex in “ Y ” design and arranged on the same transversal plane. The BFA is delimited by nearly 30 digitiform papillae in different size, tapered apex and nearly 85 pustules distributed between the papillae. There are no structures in the anterior region of the BFA. Laterally to the buccal pockets there is a large and bifurcated papilla. 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 nearly ten globular projections, with two middle projections being larger than the other. Buccal roof (Fig. 2 B): Ovoid buccal roof, wider than long. Prenarial arena has a sinuo

Internal oral morphology in larvae of the genus Rhinella Fitzinger, 1826 (Amphibia, Anura, Bufonidae)