Colorado potato beetle

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A small yellow-and-black striped chrysomelid beetle (Leptinotarsa decemlineata) native to western North America that is a major pest of potatoes and other crops in North America and Eurasia.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun black-and-yellow beetle that feeds in adult and larval stages on potato leaves; originally of eastern Rocky Mountains; now worldwide