Planococcus citri

Pest (common name): 
Citrus mealybug
Pest type: 
Arthropod
Hosts:
Grapefruit, Lemon, Orange, Tangerine
Biological characteristics: 

Taxonomic position: Phylum: Arthropoda; Class; Insecta; Order: Hemiptera; Suborder: Sternorrhyncha; Superfamily: Coccoidea; Family: Pseudococcidae

Description: The female individuals are oval shaped, flattened and soft. They are three millimeters long, yellow, and covered with some waxy dust. The male individuals are small, and their color is similar to that of the females. They have two wings, and there are two long filaments at the rear end of the abdomen.

The fertilized female lays her eggs in an egg sac which looks like a cottony mass. This sac is placed on leaves, shoots, branches, trunks and fruits. The eggs are oval and light yellow.

Newly-born nymphs are very fidgety, oval-shaped, flattened and pale yellow. As they grow, a layer of dusty wax covers them. The nymphs host on the lower side of the leaves, in twigs and fruits. They leave behind some liquid sugary excrement that attracts ants.

General damage: Damage occurs because of the absorption of sap. Flower buds, as well as recently formed fruits, may fall from the plant. Indirect damage is a consequence of the formation of sooty mold on the sugary substance.

Bibliography:
Bouvet, J. P. R.; Aquino, D. A.; Reguilón, C.; Vaccaro, N. C. 2010. Enemigos naturales de la cochinilla algodonosa de los cítricos, Planococcus citri (Risso) (Hemiptera: Pseudococcidae), en el noreste de Entre Ríos. Instituto Nacional de Tecnología Agropecuaria.; Estación Experimental Agropecuaria - Concordia; Sección de Entomología - (Imágen del póster) en: IV Congreso Nacional de Citricultura. San Miguel de Tucumán, Tucumán. 2010. Page/s: 1. URL: http://www.inta.gov.ar/concordia/info/documentos/Fruticultura/entomologia/7%20-%202%20-%20Poster%20cochinilla%20algodonosa-imagen-2010.pdf. Checked on: 19/08/2010. Hosts: Orange; Tangerine - Reference: 169.
Mareggiani, G.; Arregui, C.; Pelicano, A.; Bertolaccini. 2007. Árboles Frutales. Ecofisiología, Cultivo y Aprovechamiento. Editorial Facultad de Agronomía _ Universidad de Buenos Aires; Editor: Sozzi, Gabriel O. Page/s: Capítulo 14: Manejo intregrado de plagas de los frutales cítricos. ISBN: 950 - 29 - 0974 - 7. Hosts: Grapefruit; Lemon; Orange; Tangerine - Reference: 181.
Granara de Willink, M.C.; Claps L.E. 2003. Systematics, morphology and physiology. Cochinillas (Hemiptera: Coccoidea) Presentes en Plantas Ornamentales de la Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Universidad Nacional de Tucumán; Facultad de Ciencias Naturales e Instituto Miguel Lillo; Fundación Miguel Lillo e Instituto Superior de Entomología “Dr. Abraham Willink” (INSUE); Neotropical Entomology 32(4):625-637 (2003). Page/s: 625-637. URL: http://www.scielo.br/pdf/%0D/ne/v32n4/a13v32n4.pdf. Checked on: 16/07/2010. Hosts: Orange; Tangerine - Reference: 30.
Aybar, S.E.; Oviedo, W.E.; Vattuone, E.M. 2003. Insectos fitófagos y sus enemigos naturales en plantaciones cítricas (Citrus spp.) de la Provincia de Catamarca, República Argentina. Revista del CIZAS. Vol. 4, Nº 1, Agosto de 2003. Page/s: 18-28. ISSN 1515-0453. Hosts: Grapefruit; Lemon; Orange; Tangerine - Reference: 450.

The information contained in the system is subject to constant changes and revisions. The Bureau of Surveillance and Monitoring reserves its right to make all necessary amendments in its listings and in the contents of the data sheets whenever appropriate.

Importing countries may, if required, contact the National Directorate of Plant Protection for an official technical report on the phytosanitary status of the crops. The Directorate shall prepare such report in accordance with the information contained in this database.