Wolbachia, an intracellular bacterium of arthropods, is an ideal candidate for use in the biological control of insect pests. The inability of Wolbachia to grow in the extracellular environment requires maintenance in live insects or insect cell cultures. Growing and adapting high-density Wolbachia in the targeted host cells improves the possibility of cross-species transinfection. Here, we describe a method for the establishment of a primary cell culture from insect embryos and its transinfection with Wolbachia.