Adult Lygus Lineolaris (Palisot de Beauvois) overwinter near their autumn hosts and emerge soon after the spring snow melt. At first, tarnished plant bugs feed on a very few species of early growing weeds, but then move to sprouted alfalfa, where they complete 3 generations, the last 2 overlapping. Summer adults and nymphs disperse to many crops and weeds in flower.
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Khattat et al. (1980) studied this question.
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