Bug Identifier
Bed Bug
Community identification

Bed Bug

Cimex lectularius

Order & Family
Hemiptera (order), Cimicidae (family)
Size
4-5 mm (0.16-0.2 inches) for adults, nymphs are smaller.
See this bug in the Encyclopedia

Natural Habitat

Primarily human dwellings, especially beds, mattresses, bed frames, and furniture where they can hide and have easy access to human hosts for blood meals. Can also be found in cracks, crevices, behind wallpaper, and under floorboards.

Diet & Feeding

Exclusively blood-feeders. They feed on human blood, and occasionally on the blood of other warm-blooded animals, typically at night while the host is sleeping.

Behavior Patterns

Nocturnal; they hide during the day and emerge at night to feed. They are attracted to carbon dioxide and body heat. They tend to live in groups and leave behind fecal spots (digested blood) that appear as small, dark stains. They are resilient and can survive for several months without a blood meal.

Risks & Benefits

Risks: Bed bugs are considered a nuisance pest. Their bites can cause itchy welts, skin irritation, and allergic reactions in some individuals. While they are not known to transmit diseases, heavy infestations can lead to anxiety, sleep deprivation, and secondary skin infections from scratching. Benefits: None known to humans or the ecosystem, they are strictly parasites.