IUCN threat status:

Vulnerable (VU)

Comprehensive Description

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Description

A small brown treefrog, M SVL 24-27 mm. Tibiotarsal articulation reaches the nostril or between nostril and snout tip. Hand with some webbing, foot webbing 1(0), 2i(1), 2e(0), 3i(1), 3e(0.5), 4i/e(1.25), 5(0.25). Dorsal skin smooth. Colouration very variable. Can be uniformly light brown, or brown with a large dark hourglass marking, or brown with lichen-like yellow or pink spots. Ventrally white. No red colour on limbs or on iris.

The tibia is clearly longer than the foot. Vomerine teeth are present. A nuptial pad is recognizable on the irst finger. Males with a single subgular vocal sac. Bones are distinctly green.

In life some rather indistinct dark crossbands are present on the legs. The tips of fingers and toes are greenish. The belly is centrally silvery white and laterally transparent. The throat is transparent with a green shade. In preservative the colouration of the back has not changed substantially. The ventral side is yellowish white. Iris is light brown to grey, with some reddish-brown colour. Iris periphery greenish yellow.

Similar species: Morphologically very similar to B. marojezensis, but the calls of both species are very different.

Variation: The population observed in the Manarikoba forest at the Tsaratanana Massif is similar to that from the type locality Montagne d’Ambre, but is genetically strongly differentiated, indicating possible taxonomic distinctness.

Variation: The population observed in the Manarikoba forest at the Tsaratanana Massif is similar to that from the type locality Montagne d’Ambre, but is genetically strongly differentiated, indicating possible taxonomic distinctness.

Derivatio nominis: Dedicated to Rose Blommers-Schlösser, Rhenen, in recognition of her invaluable contributions to the knowledge of Malagasy frogs.

Taken with permission from Glaw and Vences (2007).

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