Wolbachia is a genus of intracellular bacteria that infects a wide range of arthropod species, including insects, spiders, and crustaceans, as well as some nematodes. These bacteria are maternally transmitted and can influence the reproductive mechanisms of their hosts. Wolbachia is known for its ability to spread rapidly through insect populations due to various reproductive manipulations, such as cytoplasmic incompatibility, parthenogenesis, feminization, and male killing.