Newfound species of wee frogs found in Mexico can fit on your fingertip

Six newly-described species of miniature frogs from Mexico and Guatemala are so tiny that each can fit comfortably on a human thumbnail. Two of the species are smaller than 0.7 inches (18 millimeters) long, and the tiniest of them – Craugastor candelariensis – is Mexico’s smallest frog, measuring no more than 0.5 inches (13 mm) long.

The wee frogs live in moist leaf litter on forest floors and are known as direct-developing frogs, which means they don’t undergo a tadpole stage as part of their life cycle, the researchers who described the species wrote in a new study. Rather, the frogs hatch from eggs as miniature versions of their adult forms.

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