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The study was conducted in an experimental cacao plot in the Colombian plains, it featured 20 cacao genotypes in an agroforestry system, with plantain and Mexican sunflower providing temporary shade, and yopo offering permanent shade.<\/jats:p><\/jats:sec><jats:sec><jats:title>RESULTS<\/jats:title><jats:p>We found an infestation rate of 2.9\u2009\u00b1\u20090.3 adult beetles per cacao tree. <jats:italic>L. femoratus<\/jats:italic> larvae were discovered in association with the roots of all plants within the agroforestry arrangement; however, yopo and plantain exhibited the highest incidence of root\u2010feeding larvae among these associated plants. Interestingly, male and female <jats:italic>L. femoratus<\/jats:italic> displayed distinct leaf consumption patterns in the laboratory, with females consuming more foliage relative to their body weight. Moreover, field observations highlighted the detrimental impact of <jats:italic>L. femoratus<\/jats:italic> herbivory on cacao tree survival and growth, leading to leaf skeletonization, reduced plant height, and stem diameter. Trees with over 50% leaf consumption suffered more than 20% mortality. Additionally, herbivory negatively affected cacao yield, correlating higher leaf surface damage with a decrease in harvested pods. The study also identified varying antixenotic resistance in different cacao genotypes, with some consistently displaying resistance while others showed variable levels during tree establishment and production stages.<\/jats:p><\/jats:sec><jats:sec><jats:title>CONCLUSION<\/jats:title><jats:p>This research underscores the significant role of <jats:italic>L. femoratus<\/jats:italic> as a cacao pest, emphasizing its adverse effects on cacao tree survival, development, and yield. 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