Abstract
Spiromesifen is a novel insecticide/acaricide belonging to the new chemical class of spirocyclic phenyl-substituted tetronic acids, and it is especially active against whiteflies and tetranychid spider mite species. In the biologically based integrated pest management (IPM) programs in vegetable crops in southeastern Spain, the key natural enemies include the parasitoid Eretmocerus mundus Mercet (Hymenoptera: Aphelinidae) for sweetpotato whitefly control, and the minute pirate bug, Orius laevigatus (Fieber) (Hemiptera: Anthocoridae) for western flower thrips control. Side effects of spiromesifen on E. mundus and O. laevigatus, were evaluated by laboratory studies and field trials in commercial greenhouses under IPM programs. Results indicate that spiromesifen had favourable selectivity to O. laevigatus and E. mundus and would complement biological control of Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae) by E. mundus.

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Acknowledgments
We thank Dr. Antonio Guillamón (Universidad Politécnica de Cartagena) for assistance in statistical analysis. We acknowledge anonymous referees for their reviews and comments on the manuscript. This research has been supported by Bayer CropScience.
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Bielza, P., Fernández, E., Grávalos, C. et al. Testing for non-target effects of spiromesifen on Eretmocerus mundus and Orius laevigatus under greenhouse conditions. BioControl 54, 229–236 (2009). https://doi.org/10.1007/s10526-008-9162-0
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DOI: https://doi.org/10.1007/s10526-008-9162-0


