Parasitoids associated with ambrosia beetles in the Euwallacea fornicatus species complex (Coleoptera: Curculionidae: Scolytinae) in Taiwan

Several species of ambrosia beetles in the genera Euwallacea, Xyleborus, and Xylosandrus (Coleoptera: Curculionidae: Scolytinae) are considered major pests in agriculture, forestry and urban areas. Their concealed lifestyle allows them to evade detection, and increases their chances of being introdu...

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Published inBiocontrol science and technology Vol. 33; no. 10; pp. 891 - 921
Main Authors Husein, Deena, Rugman-Jones, Paul, Dodge, Christine E., Chien, Iris, Lara, Jesus R., Liu, Fang-Ling, Liao, Yi-Chang, Tuan, Shu-Jen, Stouthamer, Richard
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 03.10.2023
Taylor & Francis Ltd
Subjects
Beetles
Bethylidae
Biological control
Braconidae
Branches
Coleoptera
Curculionidae
Eulophidae
Euwallacea fornicatus
Euwallacea kuroshio
Host-parasite interactions
Invasive species
Maternal behavior
Natural enemies
Parasitoids
Pests
Scolytinae
Urban agriculture
Urban areas
Taiwan
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Summary:Several species of ambrosia beetles in the genera Euwallacea, Xyleborus, and Xylosandrus (Coleoptera: Curculionidae: Scolytinae) are considered major pests in agriculture, forestry and urban areas. Their concealed lifestyle allows them to evade detection, and increases their chances of being introduced to non-native regions. Their reproduction is dominated by sibling mating within maternal galleries, and this behaviour makes them difficult to control. Although a handful of studies have identified natural enemies associated with ambrosia beetles, very few have done this with the goal of creating a classical biological control programme. In this study, we sought to identify hymenopteran parasitoids associated with the invasive Euwallacea fornicatus species complex. We collected branches from infested trees in a native region in Taiwan, recorded parasitoid emergence, and attempted to rear any emerging parasitoids using laboratory reared hosts and experimentally infested logs. We identified three species of parasitoid wasps that successfully parasitised beetles in the E. fornicatus species complex. These species were all new to science belonging to the genera Eucosmophorus (Braconidae), Phymastichus (Eulophidae), and Plastanoxus (Bethylidae).
ISSN:0958-3157
1360-0478
DOI:10.1080/09583157.2023.2252210