Description
Whiteflies (Aleurodina) are insects of a suborder within the order Hemiptera, living in tropical, subtropical and temperate climates.
About 200 species of whitefly are known. Their bodies rarely exceed 2–3 mm in length. Many species are pests of cultivated plants.
They soil the undersides of leaves with sticky, sugary honeydew, on which a black fungal coating called sooty mould develops.
Spots appear on the attacked leaves first, and then the leaves wilt. When the plant is moved, the whiteflies fly up, looking like tiny moths dusted with flour.
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Control
They can be controlled chemically with insecticides, but you can start by lowering the room temperature, as these insects cannot stand the cold.