A term applied to an insect species that undergoes long-range movement, sometimes hundreds of miles (e.g., fall armyworms do not overwinter in the North but rely instead on annual, long-range, northward movement by consecutive generations “hopscotching” from the southern United States). It can also refer to shorter, more localized flights or transport (e.g., the migration of thrips from alternate hosts to cotton). In simple terms, refers to a mobile pest capable of movement from field to field and/or across large areas (hundreds of feet or more).
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