Abstract
Whiteflies (Hemiptera: Aleyrodidae) are a diverse group of sap-sucking insect species that can cause severe damage in crops with global economic importance. Hops (Humulus lupulus L.) are a crop with considerable value for the brewing and pharmaceutical industries worldwide. The aim of the current study is to register whitefly species associated with this plant in Brazil. Specimens were collected from H. lupulus leaves in four different counties in Rio de Janeiro state (Cachoeiras de Macacu, Cordeiro, Nova Friburgo and Seropédica). Whiteflies belonging to nine genera and distributed in two subfamilies (Aleurodicinae and Aleyrodinae) were identified. Nine hop varieties (i.e., Brazylinsk, Cascade, Chinook, Columbus, Hallertau, Nugget, Saaz, Spalt, and Victoria) are used as host plants by these insects in Brazil. Except for Trialeurodes vaporariorum (Westwood), the other identified species were recorded in hop crops for the first time.
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