The answer to 'types of bed bug' is that there are two main types of bed bugs commonly found in homes - the common bed bug (Cimex lectularius) and the tropical bed bug (Cimex hemipterus). Both types are small, flat, oval-shaped insects that feed on human blood, but they have some key differences.
Common bed bugs are the most widespread and well-known type, found throughout the United States and in many other parts of the world. Tropical bed bugs are found primarily in warmer climates, such as the southern United States, Africa, and Asia. Tropical bed bugs are slightly larger and have some physical differences, but they share the same basic behaviors and life cycle as common bed bugs.