All bed bugs are in the family Cimicidae. The common species can be found in Hong Kong and Taiwan is called Cimex lectularius. Adult bed bugs are oval, wingless, about 6mm long and 3mm wide, and rusty red or mahogany in color. Their bodies are flattened, they have a four segmented antennae, and a three segmented mouthparts. The immatures appear identical to the adults except for their smaller size, and a lighter or yellowish white color.
The ways bed bugs commonly infest your home are by being carried there, hitchhiking on clothing, luggage or used furniture. Stay at an infested premise, a bed bug may crawl into your clothing or luggage and then crawl out again once you’re back home.