Ololygon flavoguttata (10.3897-zoologia.34.e20176) Figures 18–21

Description:

Figures 18–21; Light micrograph of the integument of O. flavoguttata: (18) Dorsal region (HE-staining); (19) Dorsal region (AB-method); (20) Ventrolateral region (HE-staining) (21) Ventral region (HE-staining). The epidermis (E) is partially keratinized, and the outermost cell layer exhibits the nuclear profiles (→). Melanophores (_) occur in the spongious dermis of both dorsal and ventrolateral regions; they are more frequent in the dorsal integument. Small clusters of apocrine glands with heterogeneous content occur in the ventrolateral integument. In the ventral region, the lipid content (ë), mixed with basophilic material, is easily visualized in the apocrine glands (Fig. 21). In the dorsal region, the EK-layer () is continuous, but discontinuous in the ventrolateral integument, being less alcianophilic in the ventral region when compared to other integument regions. CD = compact dermis; H = hypodermis.