Accepted Article Efficacy of a Long Lasting bifenthrin-treated net against horticultural pests and its compatibility with the predatory mite Amblyseius swirskii and the parasitic wasp Eretmocerus mundus. Mª del Mar Fernández 1. *, Ignacio Colomer 2 , Pilar Medina 1,3 , Alberto Fereres 3,4 , Pedro Del Estal 1,3 and Elisa Viñuela 1,3 1 Crop Protection Unit, School of Agricultural, Food and Biosystems Engineering, Technical University of Madrid (UPM), Ciudad Universitaria s/n, 28040 Madrid, Spain 2 Department of Rural Engineering, University of Almería (UAL), Almería, Spain 3 Associate Unit IVAS (CSIC-UPM): Control of insect vectors of viruses in horticultural sustainable systems 4 Institute of Agricultural Sciences (ICA), CSIC, Serrano 115 Dpdo, 28006 Madrid, Spain * Corresponding author: Mª del Mar Fernández. Email: mar.fernandez@upm.es; Tel.: +34 913 365 774. Abstract BACKGROUND: The insecticide-treated nets (ITNs) are being investigated lately for their use in agriculture. Depending on the insecticide, the hole size and the way they are produced, these nets can target different pests and therefore they could be interesting options to be used in Integrated Pest Management (IPM). As the information on their compatibility with beneficial fauna is practically negligible, in this work we have tested the compatibility of an experimental bifenthrin long lasting insecticide-treated net (LLITN) with Amblyseius swirskii and Eretmocerus mundus, important natural enemies of whiteflies and thrips, under laboratory, semi-field and commercial greenhouses. RESULTS: In the laboratory, the treated-net was very deleterious to adults of both natural This article is protected by copyright. All rights reserved. This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1002/ps.4515