A male genital has a small hook-like structure. This is not to hook the female, but to pull out other male semen from the female body to finally leave one.
The butterfly is often regarded as a model of loyalty because of the story of Liang Zhu, but the male butterfly’s practice is lost and bright. After mating, the male butterfly will secrete a substance that blocks the genital hole of the female butterfly, which is better than the chastity. too much. However, it is also understandable that male butterflies can only be mated once in a lifetime, so that semen cannot be wasted.