Bed bug (likely nymph)

Primarily indoors, hiding in mattress seams, bed frames, upholstery, cracks, and other sheltered crevices near sleeping areas.

Feeds exclusively on blood, mainly from humans but also from other warm-blooded animals. It typically feeds at night.

Wingless, flattened insects that hide during daylight and emerge at night; females lay eggs in protected crevices. They can survive months without feeding and spread through luggage, clothing, and furniture.

Bites can cause itchy welts, irritation, and sleep disruption, but bed bugs are not established as major disease transmitters. They provide little ecological benefit indoors and infestations require thorough treatment.