RESUMO O feijão comum (Phaseolus vulgaris L.) é uma das fontes proteicas mais importantes em todo o mundo. Todavia, o ataque de bruquídeos inviabiliza o armazenamento do produto após a colheita. O objetivo deste trabalho foi determinar a taxa de emergência de Zabrotes subfasciatus (Coleoptera: Chrysomelidae) em quatro variedades de feijão P. vulgaris (Carioca Pitoco, Enxofre, Gorgutuba Vermelho e Rosinha) cultivadas na Amazônia sul-ocidental (Acre, Brasil). Os grãos de cada variedade foram infestados com 50 adultos não-sexados e após 13 dias do início dos bioensaios, os insetos foram removidos. A progênie adulta obtida nas variedades foi contabilizada e removida em dias alternados, a partir da primeira emergência, até o final do período de emergência (n° de insetos/frasco). A soma da emergência de insetos foi acumulada a partir da emergência inicial e resultou na soma da emergência acumulada (SEa, % dia), calculada por SEa = ∑SEd. Foram constadas diferenças nas taxas de emergência de Z. subfasciatus entre as variedades de feijão, sendo que a variedade Gorgutuba Vermelho apresentou menor taxa de emergência. Embora esta variedade de feijão tenha apresentado menor emergência de adultos, o tempo de desenvolvimento dos insetos não se estendeu nesta variedade, em comparação com as outras variedades. Em geral, a variedade Gorgutuba Vermelho apresentou indícios de fontes resistência a Z. subfasciatus. | ABSTRACT Common beans (Phaseolus vulgaris L.) are one of the most important protein sources worldwide. However, infestation by bruchids compromises the storage of these beans after harvest. The objective of this study was to determine the emergence rate of Zabrotes subfasciatus (Coleoptera: Chrysomelidae) in four P. vulgaris varieties (Carioca Pitoco, Enxofre, Gorgutuba Vermelho, and Rosinha) cultivated in the southwestern Amazon (State of Acre, Brazil). The grains from each variety were infested with 50 non-sexed adult Z. subfasciatus, and the insects were collected 13 days after initiating the bioassays. The adult progeny was collected from each plant variety on alternate days from the beginning to the end of the emergence period, and they were counted (number of insects/jar). The sum of emerged insects per day (SEd) was determined from the beginning of the emergence period, from which the accumulated emergence was calculated (SEa= ΣSEd, % day). There were differences in the emergence rates of Z. subfasciatus among the bean varieties, with the rates being lower in the Gorgutuba Vermelho variety. Although this bean variety had the lowest peak of adult insect emergence, the period of insect development was not of increased length in this variety compared to the other varieties. In general, the Gorgutuba Vermelho variety appears to be resistant to Z. subfasciatus.

Common beans (Phaseolus vulgaris L.) are one of the most important protein sources worldwide. However, infestation by bruchids compromises the storage of these beans after harvest. The objective of this study was to determine the emergence rate of Zabrotes subfasciatus (Coleoptera: Chrysomelidae) in four P. vulgaris varieties (Carioca Pitoco, Enxofre, Gorgutuba Vermelho, and Rosinha) cultivated in the southwestern Amazon (State of Acre, Brazil). The grains from each variety were infested with 50 non-sexed adult Z. subfasciatus, and the insects were collected 13 days after initiating the bioassays. The adult progeny was collected from each plant variety on alternate days from the beginning to the end of the emergence period, and they were counted (number of insects/jar). The sum of emerged insects per day (SEd) was determined from the beginning of the emergence period, from which the accumulated emergence was calculated (SEa= ΣSEd, % day). There were differences in the emergence rates of Z. subfasciatus among the bean varieties, with the rates being lower in the Gorgutuba Vermelho variety. Although this bean variety had the lowest peak of adult insect emergence, the period of insect development was not of increased length in this variety compared to the other varieties. In general, the Gorgutuba Vermelho variety appears to be resistant to Z. subfasciatus.