 Therefore, the assumption can be made that male "Drosophila melanogaster" develop other male adaptations to compensate for mating plug insufficiency, including intra-genitalic traumatic insemination to directly deposit their sperm.Bruchid beetle or bean weevil "Callosobruchus maculatus" males are known to express extra-genitalic traumatic insemination on females.The male Bruchid beetle's intromittent organ is described as having spines that are used to pierce the reproductive tract of the female.