Bed Bug (nymph casing/molt)

Natural Habitat

Typically found indoors in close proximity to human sleeping areas, residing in mattress seams, box springs, bed frames, headboards, and cracks in walls or flooring.

Diet & Feeding

Hematophagous (feeds exclusively on blood), primarily human blood, usually feeding at night while the host sleeps.

Behavior Patterns

Nocturnal and elusive; they hide in tight crevices during the day. They go through five nymphal stages, shedding their skin (distinctive translucent casings like the one pictured) at each stage before reaching adulthood.

Risks & Benefits

Risks: Their bites cause itchy, red welts and can lead to secondary skin infections, allergic reactions, anxiety, and insomnia. They are notorious pests that are difficult and expensive to eradicate. Benefits: None known for humans or the general household ecosystem.

Identified on: 2/21/2026