Bed Bug (unfed nymph or egg casing residue)

Indoor environments, specifically cracks and crevices near human sleeping areas such as mattresses, bed frames, and baseboards.

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

Nocturnal and elusive; they hide during the day and emerge at night to feed. They undergo incomplete metamorphosis (egg, nymph, adult).

No known ecosystem benefits. Risks include allergic reactions to bites, secondary skin infections from scratching, and significant psychological distress or insomnia.