sentences:  A female "Hesperocimex sonorensis" will swell up, blacken, and die within 24–48 hours after being traumatically inseminated by a male "H. cochimiensis".In the animal kingdom, traumatic insemination is not unique as a form of coercive sex.Research suggests that in the water beetle genus "Acilius" there is no courtship system between males and females.