The greenhouse whitefly (Trialeurodes vaporariorum) is a small, sap-sucking insect that is considered a pest in many greenhouse and indoor plant settings. It feeds on the sap of a variety of plant species and can cause yellowing and stunted growth, as well as produce a sticky honeydew substance that attracts sooty mold and other fungi. In severe infestations, whiteflies can cause significant damage to crops, and their presence can also reduce the quality of the plants as well as serving as a vector for plant viruses.