Vitreorana ritae is a species of frog in the glass frog family (Centrolenidae). It is found in Amazonian Brazil, Colombia, Ecuador, and Peru, and in southern Guyana, eastern Suriname, and French Guiana. Its natural habitats are tropical moist lowland forests and rivers. It is threatened by habitat loss. Formerly, this species was considered to be distinct from Vitreorana oyampiensis, but now the two populations are considered as conspecific. Description Vitreorana ritae is a tiny glass frog that lacks humeral spines in males and has a lobed liver. Adult males measure from the snout to the vent, while the females are a bit larger at about snout-vent length. Its snout tip is neatly rounded. The translucent eardrum is visible but not large, measuring about one-fourth to one-third of the eye's diameter; the tympanic annulus is not hidden except for the dorsal margin which is covered by the supratympanic fold. Their color looks pale green above, but in fact this is much due to their green skeleton being visible through the weakly pigmented skin. This species has many clear and fine blackish spots decorating its upperside, which may appear as if they were suspended a bit above the greenish background in very weakly pigmented specimens. Helena's glass frog, V. helenae on the other hand has a more heavily pigmented yellowish-green upperside (but also the characteristic spots, which led to them being confused). The back has a smooth shagreen-like texture, while the entirely transparent belly skin has a grainy surface. The forward quarter to half of the parietal (outer) peritoneum is white, while the rest is transparent, allowing to see the frog's interior. The pericardium and the inner peritoneum covering the gastrointestinal tract are white, while the inner peritoneum protecting the brown lobes of the liver is also transparent except for the anterior tip (where some iridophores may be present). The iris is greyish white with a network of thin dark grey lines; in Helena's glass frog it is bright yellow. Melanophores are abundant on the dorsal surface of the two outer but absent on the two inner fingers. Preserved specimens are lavender above, with the dark spotting remaining unchanged; the white iridophores of the viscera can dissolve in preserved specimens. The dentigerous process of the vomer carries one tooth at most; it can be entirely toothless. The males have a type-I nuptial pad; the prepollex stands out at the base of the