potato bug po·ta·to·bug uncommon noun 1. black-and-yellow beetle that feeds in adult and larval stages on potato leaves; originally of eastern Rocky Mountains; now worldwide SynonymsColorado potato beetleColorado beetlepotato bugpotato beetleLeptinotarsa decemlineata Related words Broader terms leaf beetle Parts Leptinotarsa WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
