Phyllomedusa oreades (Brandao, 2002)

Santos, Danusy Lopes, de Morais, Alessandro Ribeiro, Signorelli, Luciana, Bastos, Rogério Pereira, Feio, Renato & Nomura, Fausto, 2018, Description of the Tadpole of Phŋllomedusa azurea from the Brazilian Cerrado, with a Description of the Internal Oral Morphology of Phŋllomedusa oreades, Herpetologica 74 (1), pp. 50-57 : 54-55

Phyllomedusa oreades

Internal oral morphology. —Buccal floor diamond shaped ( Fig. 6A ), as wide as long; oral aperture about 20% of buccal floor width; two large and prominant conical infralabial papillae with pustulations on the apices. Two large lingual papillae, longer than wide, which might present pustulations on the apices. Buccal floor arena pentagonal with 10 to 12 conical papillae on each side; the papillae of the buccal floor arena could have pustulations on their apices; numerous pustulations randomly distributed within buccal floor arena; 20 to 22 pustulations and 0 to 3 conical papillae, smaller than buccal floor arena papillae, are found anterior to the buccal pocket region; buccal pocket perforated, wider than long, transversely oriented on the middle region of the buccal floor; free velar surface with distinct glandular zone, with pustulations at the bottom of the velum and pustulations on the region anterior to the glottis, which is notched, distinct, open, and fully exposed.

Buccal roof triangular ( Fig. 6B ), prenarial arena with two broad pustulations anteriorly, parallel to the buccal opening, and three small ones posteriorly, forming a row. Nares elliptical, oriented parallel in relation to the buccal opening and positioned on the anterior third of the buccal roof; internarial distance smaller than nare opening; narial valve distinct with anterior and posterior wall pustulate and flaplike; postnarial arena rectangular with four fringed papillae; the anteromedial pair is conical and smaller than the posterolateral pair; the posterolateral papillae are broader than the anteromedial pair; six pustulations positioned in the center of the postnarial arena, in front of the median ridge, two pustulations on each side, located near the posterolateral papillae; median ridge triangular, wider than long. Buccal roof arena diamond shaped with 8 to 12 acute papillae on each side; pustulations extensively distributed throughout the buccal roof arena; glandular zone conspicuous; dorsal velum of uniform width, with pustulated margins, except at the midline, which has smooth margins.

Morphological variation. —We observed a smaller amount of variation in the internal oral morphology of P. oreades compared to the variation observed in P. azurea . The length of the lingual papillae can vary among individuals, as can the shape of the papillae in the buccal floor arena, which can be fused as seen in individuals from Cavalcante. The median ridge in one individual was bifid.

Figures

FIG. 6.—Internal oral features of the Phŋllomedusa oreades larva, Stage 37 (ZUFG 1976): (A) buccal floor, (B) buccal roof.