Population sizes can comprise millions of individuals and in a cave there can be one to 15 bugs per bat.
[1] As in many other cimicids, Afrocimex constrictus reproduce through traumatic insemination.
During mating, the male pierces the female's abdomen with his genitals, and ejaculates into her body cavity, into a special organ called the spermalege.
While females do have external genitalia, they are used for egg laying but not for mating.
Male-male stabbings were originally probably harmful to males and so it was speculated that male-male stabbings were the reason that Afrocimex constrictus males have - like females - evolved a spermalege.