The Helicoverpa armigera caterpillar, common in Asia, Oceania, Africa and Europe, is now showing up in soy and cotton fields in parts of Brazil. And spread it has. With the soybean season just six weeks old, large earworm populations have already been reported in Mato Grosso and other states in the top-producing Cerrado region. There are reports of Mato Grosso farmers who have already applied insecticide three times to control the pest. These are extreme cases, but constant monitoring to spot an uptick in populations will be vital in limiting the damage caused by the caterpillar. If we are on top of the situation, we can manage it.
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This highly polyphagous species, commonly found both in the Old and New World, has caused significant economic damage as an invasive agricultural pest in Brazil since The goal of the present study is to provide a detailed morphological assessment of adults and immature stages of H.
The biology data were acquired during four full life cycles, and observations on general behavior, nocturnal habits of larvae and adults, and sensitivity of larvae to humidity were recorded. Larval chaetotaxy differs between the first and the remaining instars, which bear L2 on the meso- and metathorax and L3 on A3 through A6, along with conspicuous chalazae and longitudinal bands.
Important morphological characters of this species include the following: eggs with four micropylar openings, lined with 12 cells arranged in the shape of a rosette; pupa adecticous and obtect, with prominent spiracles; adults with the distal antennomere striate. Adults exhibit sexual dimorphism in the number of setae on the frenulum and spines on the prothoracic leg.
Illustrations of the critical morphological features of this species are provided. This is a preview of subscription content, log in to check access. Access options Instant access to the full article PDF.
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September Fotos Peter Buchner , det. Munitionsdepot, September Studiofoto: Dietmar Laux , det. Andrea di Compito, 8.
5 tecnologias para controlar a “Helicoverpa armigera” eficientemente
Gojar Please enter your password Forgotten your password? Pakistam Journal of Biological SciencesFaisalabad, v. Invasive species are not necessarily readily recognised especially when introduced into an environment where closely related species exist, and may displace other congeners . Continue Cancel Send email OK. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. An autumnal migratory moth in family Noctuidae, wings open Bollworm, Helicoverpa zea Rapid confirmation of such incursions is imperative and can be greatly assisted by characterisation of known genomic regions.
Helicoverpa Armigera – Guia de identificação
LAGARTA HELICOVERPA PDF