Musundire, RobertChabi-Olaye, AdenirinSalifu, DaisyKruger, Kerstin2017-01-102017-01-102012-02Musundire, R, Chabi-Olaye, A, Salifu, D & Kruger, K 2012, 'Host plant-related parasitism and host feeding activities of diglyphus isaea (Hymenoptera : Eulophidae) on liriomyza huidobrensis, liriomyza sativae, and liriomyza trifolii (Diptera : Agromyzidae)', Journal of Economic Entomology, vol. 105, no. 1, pp. 161-168.0022-0493 (print)1938-291X (online)10.1603/EC10420http://hdl.handle.net/2263/58461Host plant species can affect the behavior and attributes of parasitoids, such as host searching, oviposition, and offspring Þtness. In this study, parasitism, host feeding, and sex ratios of Diglyphus isaea (Walker) (Hymenoptera: Eulophidae) on Liriomyza huidobrensis (Blanchard), Liriomyza sativae Blanchard, and Liriomyza trifolii (Burgess) (Diptera: Agromyzidae) larvae reared on Phaseolus vulgaris L., Pisum sativum L., Solanum lycopersicum L., and Vicia faba L. were determined. In no-choice tests, L. huidobrensis had the highest rate of parasitism when reared on P. vulgaris (46%), L. sativae when reared on V. faba (59%) and P. vulgaris (59%), and L. trifolii when reared on S. lycopersicum (68%). Host feeding in no-choice tests ranged between 2% and 36% and was highest on L. trifolii reared onV. faba. Results of choice tests showed a signiÞcant interaction effect for host plant and Liriomyza species on parasitism and host feeding. Within plant mixtures, L. sativae reared on P. vulgaris had the highest rate of parasitism (31%), followed by L. trifolii on S. lycopersicum (29%) and L. huidobrensis onV. faba (28%). Host feeding was highest onL. trifolii reared on S. lycopersicum (14%) and lowest on L. huidobrensis reared on P. sativum and S. lycopersicum (1%). In some instances, plant mixtures resulted in a higher proportion of females of D. isaea than single plant species. The highest proportion of females was obtained in plant mixtures on L. huidobrensis and L. trifolii on V. faba (71 and 72%, respectively). This study suggests that planting crop mixtures can potentially lead to higher proportions of females, thus improving parasitism and host feeding, depending on Liriomyza and host plant species.en© 2012 Entomological Society of America. This article is the copyright property of the Entomological Society of America and may not be used for any commercial or other private purpose without specific written permission of the Entomological Society of America.Biological controlLeafminerEctoparasitoidSex ratioTritrophic interactionsPostprint Article