First report of Heilus freyreissi (Coleoptera: Curculionidae) attacking avocado and associated with Colletotricum sp. in Brazil

Diarly Sebastião dos Reis, Lucas Machado Gonçalves Machado, Ézio Marques da Silva, Flávio Lemes Fernandes

Abstract


Curculionid beetles are significant pests of avocado trees (Persea americana [Lauraceae]). Adults of Heilus freyreissi (Coleoptera: Curculionidae) are reported for the first time on avocado trees, feeding on the tender lateral branches, the central leaf vein, inflorescences, peduncles, and fruits at the beginning of development. These injuries were consistently associated with symptoms of anthracnose disease caused by the fungus Colletotrichum sp. Thus, infestation of this insect may be of great economic significance in avocado production, because of its ability to attack various plant organs as well as it being a vector of the pathogen Colletotrichum sp.

 

Sumario

Besouros curculionídeos são importantes pragas em árvores de abacate (Persea americana). Adultos de Heilus freyreissi (Coleoptera: Curculionidae) foram reportados pela primeira vez se alimentando de ramos laterais jovens, da nervura central das folhas, inflorescências, pedúnculos e frutos no início do desenvolvimento. As injúrias estavam constantemente associadas com sintomas da doença antracnose causada pelo fungo Colletotricum sp. Assim, a infestação desse inseto pode ter grande significância econômica para a produção do abacate, por atacar vários órgãos da planta e ainda estar associado ao patógeno Colletotrichum sp.

 

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Keywords


beetle, fungal disease, Molytinae, Persea americana, pest

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