Ocorrência de Hypsipyla grandella Zeller em Frutos e Sementes de Cedro (Cedrela fissilis Vell.) em Brasília

Abstract

RESUMOEste trabalho teve como objetivo verificar a ocorrência de Hypsipyla grandella em árvores de cedro situadas em Brasília, Distrito Federal, bem como descrever os principais danos decorridos em frutos e sementes. Foram coletados 283 frutos caídos de árvores de cedro e cada fruto foi analisado individualmente quanto à presença da H. Grandella, visualização dos principais sintomas e sinais da lagarta, como a presença de orifícios, goma, teia e excrementos. Foram encontradas 128 lagartas e 41 pupários no interior dos frutos. A partir do presente estudo foi possível constatar a presença e permanência de H. grandella em árvores de cedro durante os meses de janeiro a abril, época de produção e maturação de frutos da espécie, os quais, assim, servem de inóculo para futuros plantios, tanto de produção comercial como para fins paisagístiscos, dessa Meliaceae na região do Distrito Federal, Brasil.Palavras-chave: broca-das-meliáceas, entomologia florestal, praga florestal. Occurence of Hypsipyla grandella Zeller in Fruit and Cedar Seeds (Cedrela fissilis Vell.) in Brasília ABSTRACTThis study aimed to report the occurrence of Hypsipyla grandella in cedar trees in Brasilia, Distrito Federal, and describe their main damage in fruits and seeds. 283 fallen fruit of cedar trees were collected and each fruit was individually analyzed for the presence of H. grandella and visualization of the main symptoms and signs of caterpillar, as the presence of holes, gum web and excrement. 128 caterpillars and 41 puparium were found inside the fruits. From the present study, were determined the presence and permanence of H. grandella in cedar trees during the months of January to April, harvest season and ripening of the species, serving as inoculum for future crops, both commercial productions and for landscaping purposes of Meliaceae on the region of the Distrito Federal, Brazil.

Hypsipyla grandella (Lepidoptera: Pyralidae) Boring Khaya ivorensis (Meliaceae) Fruits and Seeds in Brazil: First Report

“…The total of 13 larvae in a single K. ivorensis fruit is higher than that reported for this species occurring in C. fissilis, where only 1 larva occurred on average, with a maximum of up to 4 per fruit (Castro et al 2018). This may be due to the cannibalism of smaller larvae by larger and older ones in C. fissilis fruits with many larvae.…”

“…This is the first record of H. grandella damaging K. ivorensis fruits and seeds, an exotic plant in Brazil. This is important because this plant was introduced due to the damage caused by this insect in native Meliaceae, such as Carapa guianensis Aubl., Carapa procera DC., Cedrela fissilis Vell., and S. macrophylla (Pinto et al 2013;Castro et al 2018). The report of damage by this pest in African mahogany shoots in 2016 (Zanetti et al 2017), and this report on fruits and seeds, show that the resistance of K. ivorensis to H. grandella was broken by selective pressure acting over the large area cultivated with this plant in Brazil (Zanetti et al 2017).…”

“…In addition, the survival of a larger number of larvae per K. ivorensis fruit may indicate a better quality of this host for the larvae of this pest. Up to 4 pupae of H. grandella were found in a single fruit of K. ivorensis, but only 1 pupa was reported in C. fissilis fruits (Castro et al 2018).…”

“…The K. ivorensis seeds were mostly damaged by H. grandella, with greater damage than that reported for Carapa spp. injured by Hypsipyla ferrealis Hampson (Lepidoptera: Pyralidae) and H. grandella, and of C. fissilis by H. grandella (Pinto et al 2013;Castro et al 2018). A diet based on S. macrophylla seeds may contain the essential nutrients for development of this insect (Castro et al 2016).…”

Cleogonus insulcatus Fiedler, 1954 (Coleoptera: Curculionidae): first report in Brazil and a new host plant record, Handroanthus impetiginosus (Mart. ex DC.) Mattos

“…Up to eight holes per fruit were found, with an average of two in all samples. The observation of holes is an important sign of insect attack on fruits, as demonstrated by Castro et al (2018a) to detect the presence of Hypsipyla grandella (Zeller, 1848) (Lepidoptera: Pyralidae) in cedar, Cedrela fissilis Vell. (Meliaceae), and mahogany Swietenia macrophylla King (Meliaceae) (Castro et al 2018b).…”