A genus of small, warty frogs found in West African rainforests.
From Greek 'a-' (without), 'stylos' (column), and 'sternus' (breast), referring to anatomical characteristics of these frogs' chest structure.
These bumpy little frogs have evolved to look exactly like warty leaves on the rainforest floor—such perfect camouflage that scientists missed entire species for decades before noticing the 'leaves' were actually hopping around.
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