A classification of the higher groups and genera of the coccid family. Chemical Control It is considered a major pest of citrus trees (CARVALHO, et ai, 1996) and for this reason it is common to use chemical con-trol to decrease the economic threshold. Verma S K, Gireesh Chand, Pankaj Kumar, 2012. Watson GW; Ooi PAC; Girling DJ, 1995. Icerya purchasi Maskell, cottony cushion scale (Hemiptera: Margarodidae), causing damage to ornamental plants growing outdoors in London. In addition, the use of insecticides prevents regulation by natural enemies, which has proved to be highly successful with this species. Williams DJ; Watson GW, 1990. It is the only species of Icerya present in Florida. Native to Australia, cottony-cushion scale is widespread throughout most subtropical and tropical areas and warmer temperate regions of the world (Kennett et al. Morales CF, 1991. Matile-Ferrero D; Legrand J; Riffet X, 1999. http://www.unict.it/dipartimenti/biologia_animale/webnatur/insetti/omotteri/coccoidea.htm, SchÃ¶nfeld U, 2015. When I. purchasi established in California, USA in 1868/1869, it was apparent that it could be a major impediment to citrus production. Type data: NEW ZEALAND: Auckland, on kangaroo acacia [=Acacia sp. 436 p. Gossard HA. ]; collected by Dr. Purchas.. Lectotype, female, by subsequent designation (Morale1991,57). Icerya purchasi Bacteria Beauveria bassiana Biological control ABSTRACT Cottony cushion scale Icerya purchasi Maskell, 1878 (Hemiptera: Margarodidae) is an important pest that inhibits the plant growth and development by sap sucking of the plants, and causes sooty mold in more than 200 plant species, especially in citrus plantation. Photograph by Lyle J. Buss, University of Florida. Margarodidae, Icerya purchasi. [Distribution map]. Online. In: Peleg BA, Bar-Zakay I, Ascher KRS, eds. Icerya purchasi : adult with ovisac on Grevillea sp. Bridgetown, Barbados: Caribbean Agricultural Research & Development Institute. The older nymphs continue to feed, but migrate to the larger twigs, and finally, as adults, they settle on the larger branches and trunk. Pathogenicity of Metarhizium anisopliae and its use in forest pest control. In: Taiwan Agricultural Research Institute, Special Publication, 89 1-98. Insect pests of economic significance affecting major crops of the countries in Asia and the Pacific region. http://www.unict.it/dipartimenti/biologia_animale/webnatur/insetti/omotteri/coccoidea.htm. 124 pp. Environmental Entomology. Horticultural Journal, 11(2):105-110. Several life stages of the cottony cushion scales, Icerya purchasi Maskell, on a twig. Malumphy C, 2013. Female body oval-shaped and red-brown with black legs. Pesticide effectiveness test of several insecticides to control Icerya purchasi endangering Liquidambar formosana. UC/IPM Online. Population decline of Galapagos endemic Lepidoptera on Volcan Alcedo (Isabela Island, Galapagos Islands, Ecuador): an effect of the introduction of the cottony cushion scale? Ants attending I. purchasi infestations to collect the sugary honeydew excreted (Getu, 1996), may defend the scales from attack by their natural enemies, so making the pest problem worse. CABI Compendium: Status as determined by CABI editor. Williams D J, Watson G W, 1990. Biological Control of Insect Pests and Weeds, Chapman and Hall, London. Israel Journal of Entomology, 29:261-264. 176 pp. Chinese Journal of Biological Control. Journal of Animal Ecology, 49:939-957. The scale insects of California. Figure 4. First instar crawler of the cottony cushion scale, Icerya purchasi Maskell. The scale insects of the tropical South Pacific region. , Thailand: Regional Office for Asia and the insect growth regulators on some Coccinellidae Coleoptera... Al., 1989 ) in Southeast Asia by Caltagirone and Doutt ( )! 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