IUCN threat status:

Data Deficient (DD)

Comprehensive Description

Read full entry

Description

Description: Ranitomeya variabilis has a mean snout-vent length of 17.4 mm in adult males and 18.0 mm in females (Brown et al. 2008b).

Diagnosis: R. imitator is a Müllerian mimic of R. variabilis. R. variabilis can be differentiated from R. imitator by egg coloration, vocalization, and subtle coloration differences (Schulte et al. 2001; Schulte et al. 2003). Additionally, R. variabilis is a color and pattern variant of R. ventrimaculata (Schulte et al. 2002).

Coloration: Coloration changes on a gradient from the anterior to posterior, going from a yellow-green to a blue-green. This species has a single nose spot with large, ovid dorsal spotting. Limbs are less than half black with small, even spots (Brown et al. 2008b).

Tadpole/Larval Morphology: The body is depressed. There is a sinistral spiracle on the lower left side of the body and a short medial vent tube on the ventral fin (Masche et al. 2010). It has dorsal, circular nostrils; dorsal eyes that are directed dorsolaterally (Masche et al. 2010). The number of marginal papillae, the presence of jaw sheath serrations, jaw sheath keratinization, and tail color change over the developmental stages (Schulte et al. 2003).

The caudal musculature of the tadpoles is narrow near the posterior tail tip and becomes moderately robust near the anterior. Fins do not extend onto the body of the tadpole and are subequal in height. The caudal fin tip is rounded and there is an anteroventrally directed mouth with an emarginated oral disc. There is a single row of 32 marginal papillae surrounding the oral disk and there are no submarginal papillae. On the marginal papillae of the lips there are two gaps: a small medial gap on the posterior lip and a large medial gap on the anterior lip. Two anterior rows of teeth are not completely keratinized and are equal in length. The upper jaw sheath has slender lateral processes but, like the V-shaped lower jaw sheath, it is moderately robust with serrated edges over its entire length (Masche et al. 2010).

Tadpole Coloration: The tadpoles have grey to dark black-brownish pigmentation (Brown et al. 2008b ; Masche et al. 2010). A single nose spot is present, differentiating the species from R. imitator which has a paired nose spot. In both dorsal and lateral profiles, the snout is rounded (Brown et al. 2008b).

Trusted

Creative Commons Attribution 3.0 (CC BY 3.0)

© AmphibiaWeb © 2000-2015 The Regents of the University of California

Source: AmphibiaWeb

Belongs to 0 communities

This taxon hasn't been featured in any communities yet.

Learn more about Communities

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!