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Which two bedbug species feed on humans?

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heteropteran Squash bug (*Anasa tristis*)

The two primary species of bedbugs that feed on humans are Cimex lectularius, which is found in temperate regions, and C. hemipterus, which is common in the tropics.1

While these two species are the most notable for attaching to humans, other species within the family Cimicidae may also bite humans under certain conditions. For example, the bat bug (C. pilosellus) and the poultry bug (Haematosiphon inodora) are known to feed on humans, though they typically reside on other hosts.1