An introduced new species of Lecanoideus (Homoptera: Aleyrodidae) established and causing economic impact on the Canary Islands

Lecanoideus floccissimus sp. n. is described from material collected in the Canary Islands and Ecuador. A review of the economic impact of L. floccissimus in the Canary Is. is presented. The status of Lecanoideus Quaintance and Baker is discussed. Keys are provided to enable adults and puparia of L. floccissimus to be distinguished from Aleurodicus dispersus Russell, which is also established on the islands.