. Cooperative economic insect report. Beneficial insects; Insect pests. - 937 - STATUS or SOME IMPORTANT INSECTS IN THE UNITED STATES AZALEA WHITEFLY (Pealius azaleae (Baker & Moles)) Economic Importance; This whitefly was originally described in 1920 after having been intercepted by Plant Quarantine inspectors over a ten-year periodo At that time the insect did not appear to be a serious pest because it was not numerous on its host. However, since it has become established, locally heavy populations have developed. In addition to feeding injury, this insect secretes honeydew and the subse
. Cooperative economic insect report. Beneficial insects; Insect pests. - 937 - STATUS or SOME IMPORTANT INSECTS IN THE UNITED STATES AZALEA WHITEFLY (Pealius azaleae (Baker & Moles)) Economic Importance; This whitefly was originally described in 1920 after having been intercepted by Plant Quarantine inspectors over a ten-year periodo At that time the insect did not appear to be a serious pest because it was not numerous on its host. However, since it has become established, locally heavy populations have developed. In addition to feeding injury, this insect secretes honeydew and the subsequent sooty mold may seriously interfere with the photo- synthetic function of the leaves and materially reduce the vigor and flowering of the infested plant. Distribution: Of Asiatic origin, the azalea whitefly has been intercepted from Austria, Belgivun, Great Britain, Japan and the Netherlands. It became established in Australia about 1942. In the eastern and southeastern United States, the species is generally considered to be present wherever Rhododendron mucronatum is grown. The map below indicates known distribution in the United States. Host: This pest appears to be confined to Rhododendron mucronatum (Azalea ledifolia alba or A. indica alba of trade) and its allies and varieties. This group of azaleas is noted for its dense pubescence and sticky exudate, and includes many of the cultivated azaleas of horticulture. DISTRIBUTION OF AZALEA WHITEFLY (Pealius azaleae (Baker & Moles)). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Animal and Plant Health Service. Plant Protection and Quarantine Programs; United States. Bureau of Entomology and Plant Quarantine; United States. Plant Pest Control Division. Hyattsville, MD. [etc. ] Plant Protection and Quarantine Programs Animal and Plan
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