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The new species was announced Wednesday, but the frogs have been thrashing in plain view for more than a century. "I saw some specimens in museum collections that are over a hundred years old," co-discoverer Indraneil Das said in a statement.
"Scientists most probably thought they were juveniles of other species," said Das, a herpetologist at Universiti Malaysia Sarawak in Malaysia. "But it turns out they are adults of this newly discovered microspecies."