Bat bug
（重定向自Cimex pilosellus）
Bat bugs are blood-sucking insect parasites that feed primarily on the blood of bats. The name has been applied to members of the family Cimicidae (e.g. Cimex lectularius, Afrocimex constrictus) and also to members of the family Polyctenidae. Bat bugs are closely related to bed bugs, and are so similar in appearance that they are often mistaken for bed bugs. Microscopic examination is needed to distinguish them. Bat bugs will also bite humans if given the opportunity.