An Old World beetle (Oulema melanopus) now found in the United States, where it is a serious pest of grain crops as a result of its consumption of cereal grasses.

• 橙足负泥虫，黑角负泥虫：一种东半球甲虫（黑角负泥虫禾谷负泥虫属），现发现于美国，以谷类作物为食，是危害严重的害虫