Colaspis is a genus of leaf beetles in the subfamily Eumolpinae. It is one of the largest genera in the subfamily, containing over 200 species, and it is known from both North and South America. A number of species from this genus are considered to be pests, such as the grape colaspis (Colaspis brunnea). Some species are known from the fossil record from the Eocene of Colorado in the United States.

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