sentences:  Traumatic insemination
  
  Traumatic insemination, also known as hypodermic insemination, is the mating practice in some species of invertebrates in which the male pierces the female's abdomen with his aedeagus and injects his sperm through the wound into her abdominal cavity (hemocoel).The sperm diffuse through the female's hemolymph, reaching the ovaries and resulting in fertilization.