Fewer than 100 of the creatures that make the distinct call survive in the wild.

When frog males attempt to attract a mate, their loud calls are competing with other males, and the calls of other species. For the females the noise problem is a little like a lively cocktail party.

Deep in the forests of Madagascar, researchers have discovered seven new species of frogs and named them after characters from Star Trek. “The calls of the frogs remind us strongly of iconic ...