Bed Bug Shell Casings

Scientific Name: Cimex lectularius

Order & Family: Order: Hemiptera, Family: Cimicidae

Size: 1.5mm to 7mm depending on the life stage (instar)

Bed Bug Shell Casings

Natural Habitat

Typically found indoor environments near human sleeping areas, such as mattress seams, bed frames, and cracks or crevices.

Diet & Feeding

Solely blood of warm-blooded animals, primarily humans. They are nocturnal obligate hematophages.

Behavior Patterns

Nymphs must shed their exoskeletons (as seen in the image) five times before becoming adults. They are primarily nocturnal and hide during the day to avoid detection.

Risks & Benefits

Risks include itchy skin welts, allergic reactions, insomnia, and psychological distress. While they do not transmit diseases, infestations are difficult to eradicate. There are no ecological benefits to humans.

Identified on: 6/18/2026