Male Bedbugs Use a Spear-Like Organ to Stab Females in the Abdomen

Essay

Male bedbugs use a spear-like organ to stab females in the abdomen before injecting his sperm, leaving a wound and causing possible infections. How does this harmful male trait persist, despite its negative impact on female fitness? If this species is engaged in a sexual arms race, what prediction can we make about the female bedbug's physiology or behavior?