Introduction: Bactericera cockerelli is an insect that damages solanaceous crops, mainly papa (Solanum tuberosum L) and tomato (Solanum lycopersicum L). B. cockerelli was the chemical control; however, efforts have been made to implement other control strategies with insecticides that are less toxic to the environment, human health and non-white insects. This implementation consists of including biological control organisms such as predators, parasitoids, naturally occurring and botanical insecticides, entomopathogen fungi and chemical insecticides with a lower impact on charitable fauna. In order to deepen these interactions, this work determined the mean lethal concentration (LC50) of insecticides on the populations of B. cockerelli and its parasitoid Tamarixia triozae. On this basis, the selectivity percentage (PS) of the different insecticides with parasitoid T. triozae was calculated. Method: Bioassays were performed using the immersion method to simulate full field coverage applications; six insecticides were evaluated; Prophenophos and cypermethrin of organo-synthetic origin; Azadirachtin and AEC (Essential citrus oil with cinnamon and vegetable oil soap) of botanical origin; one strain of Beauveria bassiana and one strain of Metarhizium anisopliae. The data obtained determined selectivity using the Selectivity Proportion (PS), dividing the LC50 of the product over the natural enemy by the LC50 of the product on the pest insect, where values equal to or greater than one indicates selectivity. Results: The insecticides assessed showed mortality in B. cockerelli and its parasitoid T. triozae. The lowest proportion of selectivity was for Cipermethrin (PS = 0.01) and only M. anisopliae showed selectivity with T. triozae by obtaining a value of PS = 3.58. The other insecticides showed lower than one PS values and were therefore considered non-selective for parasitoid. Conclusion: Based on selectivity indices, the lethality towards T. triozae was greater than that of B. cockerelli. The highest toxicity was in organo-synthetic, botanical and biological insecticides in that order. The exception was the strain of the species Metarhizium anisopliae, which showed selectivity (PS = 3.58) towards parasitoid.