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Journal of Entomology
  Year: 2012 | Volume: 9 | Issue: 6 | Page No.: 429-434
DOI: 10.3923/je.2012.429.434
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Distributions of Armoured Scale Insects Infesting Citrus Trees in Different Localities in Egypt

M.E. Tawfeek

The distributions of five armoured scale insect species attacking different species and varieties of citrus trees were studied in nine provinces in Egypt viz., Alexandria, Beheira, Gharbia, Menoufia, Kafr El-Sheikh, Qalyubia, Sharkia, Dakahlia and Ismailia during the growing seasons from 2008 through 2010. Tree branches carrying colonies of diaspidid species were brought to the laboratory for identification and counting the populations. Five armoured scale insect species representing four genera were collected and identified. These were: Lepidosaphes beckii (Newm.), Parlatoria ziziphi (Lucas), P. pergandii Comstock, Aonidiella aurantii (Maskell) and Chrysomphalus aonidum (L.). However, P. ziziphi dominated in Menoufia; C. aonidum had very high in numbers in Qalubia, Kafr El-Sheikh and Gharbia; L. beckii was abundant in Alexandria and Sharkia; A. aurantii distributed in Beheira, Ismailia and Menoufia and P. pergandii was found in a few numbers in Alexandria. On the other hand, the susceptibility and rate of infestation per leaf and per cm2 of leaf by the dominant armoured scale insect species, P. ziziphi on citrus trees were observed in Shibin El-Kom alone. The present study indicated that the level of infestation of armoured scale insect species differed from one location to the other.
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How to cite this article:

M.E. Tawfeek , 2012. Distributions of Armoured Scale Insects Infesting Citrus Trees in Different Localities in Egypt. Journal of Entomology, 9: 429-434.

DOI: 10.3923/je.2012.429.434






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