Bed bug

Indoor environments, specifically cracks and crevices in mattresses, bed frames, furniture, and walls near sleeping areas

Obligate hematophages, primarily feeding on human blood

Nocturnal and elusive; they hide during the day and emerge at night to feed. They undergo incomplete metamorphosis with five nymphal stages requiring blood meals to mature.

Risks include itchy bites, allergic reactions, secondary skin infections from scratching, and psychological distress/insomnia; however, they are not known to transmit diseases to humans.