Bed bug

Typically found in cracks and crevices near human sleeping areas, such as mattresses, bed frames, and furniture.

Obligate hematophagous (feeds exclusively on blood, primarily human).

Mainly nocturnal; they emerge at night to feed and hide during the day. They progress through five nymphal stages, requiring a blood meal to molt between each.

Risks include itchy skin welts and allergic reactions from bites, as well as significant psychological distress and sleep deprivation; they are not known to transmit diseases to humans. They offer no ecological benefits in domestic environments.