The adult bed bug is a small insect about 5 mm long, wingless and with a flattened body dorso-ventrally. Brown in colour, it takes on a reddish-brown hue when it has taken its blood meal.
The bed bug feeds exclusively on the blood of its host, the human, which it will take overnight while we sleep.
The bed bug lives near the place where its host lives, therefore, as its name suggests, it will live on and near the bed, as in the mattress, bedside table, head and foot of the bed. In slightly more severe cases of infestation, they can be found in door frames and window frames, as well as in switchboards, switches and sockets.
The female lays between 1 and 5 eggs per day in a slit or on a rough surface, then she produces a transparent secretion to fix it securely in this place. She can lay 200 to 500 eggs during her lifetime.