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Walking sticks mimic two leafy looks and split their species

A species of walking stick, an insect that pretends it's part of a plant, may be evolving into two species by adapting to different environments.

The insect, Timena cristinae, seems to be adapting so that it can hide on either of two species of plants. By doing so, it's probably morphing into two separate species, says Cristina Sandoval of the University of California, Santa Barbara.

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