Photo 1. Female citrus snow scale, Unaspis citri. The female is very different from the male; it is oval, brown-black and 2 mm long, whereas the male is 1 mm, and white.
Citrus snow scale, white louse scale
AUTHOR Grahame Jackson
1Information from Waterhouse DF, Norris KR (1987) Biological Control Pacific Prospects. Inkata Press; and CABI Plantwise Knowledge Bank. (http://www.plantwise.org/KnowledgeBank/Datasheet.aspx?dsid=55685); and from Buckley CR, Hodges AC (2017) Citrus snow scale. UF/IFAS Extension Service, University of Florida.(http://entnemdept.ufl.edu/creatures/orn/scales/citrus_snow_scale.htm). Photo 1 (and Diagram) Gillian Watson, Senior Insect Biosystematist, Plant Pest Diagnostics Branch, California Department of Food & Agriculture, Sacramento, CA, USA.
Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.
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