Bed Bug Cast Skin (Exuvia)
Scientific Name: Cimex lectularius (associated shedding)
Order & Family: Order: Hemiptera, Family: Cimicidae
Size: Approximately 1mm to 4.5mm depending on the nymphal stage of shedding.
Natural Habitat
Indoor environments near sleeping areas. Commonly found in mattress seams, box springs, headboards, electrical outlets, and behind baseboards.
Diet & Feeding
The insect itself feeds on blood (hematophagy), primarily human, but these skins are non-living byproducts of growth.
Behavior Patterns
Bed bugs shed their exoskeletons (molt) five times before reaching adulthood. Finding these translucent, shell-like skins is a primary indicator of an active infestation, often found clustered near hiding spots.
Risks & Benefits
Risks: Indicates the presence of living bed bugs which cause itchy bites, allergic reactions, anxiety, and insomnia. They are difficult to eradicate. Not known to transmit disease. Benefits: None.
Identified on: 2/28/2026