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Bedbug (Cimex lectularius) magnified 5 —William E. Ferguson
Any member of approximately 75 species of nocturnal insects (family Cimicidae) that feed by sucking the blood of humans and other warm-blooded animals. The reddish brown adult is broad and flat and less than 0.2 in. (4–5 mm) long. Among the most cosmopolitan of human parasites, they are found in every kind of dwelling. They digest meals slowly; adults have lived for at least a year without food. Though the bite is irritating, it is not known to transmit diseases to humans.
This entry comes from Encyclopædia Britannica Concise. For the full entry on bedbug, visit Britannica.com.