IUCN threat status:

Least Concern (LC)

Comprehensive Description

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Description

Hyalinobatrachium valerioi is a small frog, with adult males ranging from 19.5 to 24.0 mm, and adult females measuring from 22.5 to 26 mm (Savage 2002). It has large yellow round spots and small black dots on a green background, so that it mimics the appearance of an egg clutch (Leenders 2001). The upper surface is shagreened (with small, rounded bumps). As with other glass frogs, the venter is transparent; the heart is visible and red, but the digestive tract, pericardium, and liver are wrapped in a white guanine coat. This frog has a broad head and a snout that appears truncated both in profile and from above. The eyes have gold irises and are not protuberant. The tympanum is not distinct. Digital discs are present and truncate. The first finger is longer than the second, with webbing present between the outer fingers. Toes are extensively webbed. Males have a white nuptial pad consisting of a few separate glands on the outer margin of the thumb base (Savage 2002; Leenders 2001).

The tadpole of the Reticulated Glass Frog is small, measuring 12 mm in total length at the time of hatching. As described by Savage (2002), the tadpole of this species has brown blotches dorsally and on the tail, with the fins being clear and the underside bright red. It has an elongated body and tail, with the body being relatively depressed. The tail fin is small and the tail tip is rounded. In this species, the spiracle is posterior and midlateral. The oral disc is complete, with beaks and 2/3 rows of denticles present. Fine serrations are present on the lower beak. The A2 row of denticles is gapped above the mouth. A single row of papillae is present on the lateral and ventral margins of the oral disc.

The color pattern of this frog mimics the egg mass that it guards (McDiarmid 1978). This species is likely to be part of a species complex in Ecuador (IUCN 2006).

A Spanish-language species account can be found at the website of Instituto Nacional de Biodiversidad (INBio).

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