Common Bed Bug (Nymph/Exuviae)
Scientific Name: Cimex lectularius
Order & Family: Hemiptera: Cimicidae
Size: 1.5 mm to 5 mm (nymphs are smaller and translucent-yellow/amber).

Natural Habitat
Human dwellings, specifically in cracks, crevices, bed frames, mattresses, and behind wallpaper or baseboards.
Diet & Feeding
Obligate hematophages; they feed exclusively on the blood of warm-blooded animals, primarily humans.
Behavior Patterns
Nocturnal and elusive; they hide during the day and emerge at night to feed. They undergo five nymphal stages, requiring a blood meal to molt into the next stage, leaving behind amber-colored cast skins (exuviae).
Risks & Benefits
Risks include itchy welts, allergic reactions, psychological distress, and secondary skin infections from scratching. They are not known to transmit diseases to humans. There are no ecological benefits in a human domestic setting.
Identified on: 2/16/2026