“…The internal genital organs serve to house the germ cells, provide their nourishment and provide a protected area within the body where they can undergo some or all of the development that brings them to a stage ready for conjugation; these include devices for securing fertilization and glands for the production of a mucous or adhesive or protective medium; and finally, they expel germ cells from the body at the appropriate time (Snodgrass, 1935). In an adult insect including Chrysomelidae, the basic parts of the male reproductive system include a pair of testis, a pair of lateral canals, a pair of vas deferentia, and an ejaculatory duct (Çağlar, Özyurt Koçakoğlu, & Candan, 2020; Hopkins, Steelman, & Carlton, 1993; Kasap & Crowson, 1979; Özyurt Koçakoğlu, Candan, & Güllü, 2020; Snodgrass, 1935; Suzuki, 1988). Each testis typically consists of a group of sperm tubes or testicular follicles which contain male reproductive cells in successive stages of development and other cells associated with germ cells in varying capacities (Kasap & Crowson, 1979; Snodgrass, 1935).…”