Bed Bug (nymph or engorged adult)

Typically found in human dwellings, hidden in cracks, crevices, mattress seams, and bed frames near sleeping hosts.

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

Nocturnal parasites that emerge at night to feed. They undergo incomplete metamorphosis with five nymphal stages, each requiring a blood meal to molt.

Risks include itchy skin welts, allergic reactions, insomnia, and psychological distress. They are not known to transmit diseases to humans but are significant urban pests.