The leaves of nepenthaceae are shaped like cups, forming symmetrical pitt-like structures above and below, and covered with thick mucus inside, which is its main equipment for trapping insects. The pitts of nepenthaceae contain dense hairs that secrete mucus that attracts insects and small animals, and when they get stuck and sink to the bottom, dissolve in the digestive juices. The flowers of nepenthaceae give off a light aroma during the day and a stench at night, both of which are different scents that attract insects.