Name of one of the States of the American Union, named after the great river [Sp. Rio Colorado ‘colored river’] which rises therein. Hence, Colorado beetle, a small American beetle (Doryphora decemlineata, Family Chrysomelidæ), of a yellow color, marked on the back with ten longitudinal black stripes, first observed (c. 1824) near the Upper Missouri. Its larva, the potato-bug, is exceedingly destructive to the potato.

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1877.  Act 40 & 41 Vict., c. 68 § 1. The Privy Council may make such orders as they think expedient to prevent the introduction into Great Britain of the Doryphora Decemlineata or Colorado Beetle.

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1877.  Lond. Gaz., 15 Aug. This order may be cited as the Colorado Beetle Order, 1877.

3