Bed bug

Human dwellings, primarily found in cracks and crevices, bed frames, mattresses, and behind wallpaper in sleeping areas.

Obligate hematophages; they feed exclusively on the blood of warm-blooded animals, primarily humans.

Mainly nocturnal; they hide during the day and emerge at night to feed. They undergo incomplete metamorphosis comprising egg, five nymphal stages, and adult.

Risks include itchy allergic reactions to bites, sleep deprivation, and psychological distress. While they do not typically transmit diseases, they are a major pest that requires professional eradication.