Cimex hemipterus, commonly known as the tropical bed bug, is a small, parasitic insect that feeds on the blood of humans and other warm-blooded animals. It is typically brown or reddish-brown and can grow up to 5-7 mm in length. These bugs are primarily nocturnal, hiding in cracks and crevices during the day and emerging at night to feed. This species is found in tropical and subtropical regions around the world. Cimex hemipterus can reproduce quickly, leading to infestations in homes and hotels. Their bites can cause itching and discomfort, and they are often mistaken for bites from other insects, such as mosquitoes.