Lymantria concolor is a moth of the family Erebidae first described by Francis Walker in 1855. It is found in Sikkim, the Himalayas, Taiwan and Thailand.

The wingspan is 40–54 mm.

The larvae defoliate fruit trees.

The secretions of Lymantria concolor caterpillars contain volatile secondary metabolites that serve as a defense against predators. The chemical composition of their secretions changes with age.

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