Bed Bug

Found globally in human dwellings, typically nesting in cracks, crevices, mattress seams, and bed frames near sleeping areas.

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

Nocturnal parasites that emerge at night to feed. They undergo incomplete metamorphosis (egg, nymph, adult) and can survive for months without a blood meal.

Risks include itchy bites, allergic reactions, secondary skin infections from scratching, and significant psychological distress; they are not known biological vectors of disease. There are no ecological benefits to humans.