This paper describes the sexual behavior of Bothriurus buecherli San Martín 1963 and compares it with the rest of the B. prospicuus group. The mating behavior was very similar to other species of the group, but B. buecherli presented some differences in the initial stages, one being a long period of inactivity after the male grasps the female pedipalps. Information presented includes reference to the sexual sting, post-partum copulation, and an analysis of a case of cannibalism by the female.