Abstract Emerald ash borer ( Agrilus planipennis Fairmaire) (Coleoptera: Buprestidae) is a major stem borer of ash ( Fraxinus spp.). It is univoltine in Tianjin, while it is semivoltine in Heilongjiang Province, and both univoltine and semivoltine in Changchun, Jilin Province, where the majority is ...
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