Occurrence of proscopiidae in Eucalyptus spp.: analysis of the infestations and spatial distribution
DOI:
https://doi.org/10.4336/2015.pfb.35.81.706Keywords:
Tetanorhynchus smithi, Forest protection, StickbugsAbstract
The objective of this research was to report the occurrence of proscopiidae and to quantify its infestation and spatial distribution in one experimental plantation of eucalypt clones. The study was conducted in an experimental field with eucalypt hybrids of Eucalyptus urophylla x Eucalyptus grandis (clones GG100), Eucalyptus urophylla x Eucalyptus grandis (H13) and of Eucalyptus urophylla x Eucalyptus camaldulensis (VM01). The plantation was established in three continuous blocks with 512 plants with 3 m x 2 m, in Cáceres municipality, Mato Grosso State, Brazil. Infestation of proscopiidae insects was detected two months after planting . The insects were collected for identification. The attacked trees were geo-referenced and the injuries were quantified. The spatial pattern of proscopiidae he attack was determinated using the location information of the damaged plants, which have been submitted to a quadrats analyses using Morisita and binomial dispersion indexes. All the collected insects have been identified as Tetanorhynchus smithi Rehn, 1904 (Orthoptera, Proscopiidae). The infestation differed significantly among the three eucalypts clones and aggregated spatial pattern of attack was observed. This is the first report of this species of proscopiidae in eucalyptus in Mato Grosso State.
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