Bed Bug

Found globally indoors in residential settings, hotels, and communal spaces; they typically hide in mattress seams, bed frames, cracks, and crevices near sleeping areas.

Obligate hematophagous (blood-feeders), primarily targeting humans but may feed on other warm-blooded animals.

Nocturnal parasites that emerge at night to feed. They undergo incomplete metamorphosis (egg, nymph, adult) and can survive for several months without a meal in cool conditions.

Risk: Causes itchy, red welts and psychological distress/insomnia. While they are not known to transmit diseases to humans, they are difficult and expensive to eradicate. Benefit: None to humans or standard ecosystems.