Calumma ratnasariae is a species of chameleon found in Madagascar.

[1] Calumma ratnasariae is a species of chameleon exclusively found within the Bealanana District situated in the northern region of Madagascar.

Its habitat ranges from the Analabe Forest in the southern territory to Andrevorevo.

The specific epithet is named after Yulia Ratnasari,[3] in recognition of her contribution for taxonomic research and nature conservation projects in Madagascar.

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