n African Entomology - An update on the status of several whiteflies (Hemiptera: Aleyrodidae) found on citrus in South Africa - short communications

Volume 27 Number 1
  • ISSN : 1021-3589



Whiteflies (Hemiptera: Aleyrodidae) are seldom considered serious pests on commercial citrus in South Africa, due either to biological control or the use of plant protection products for the control of mealybugs (Pseudococcidae) and armoured scales (Diaspididae). In a recent review of citrus pests in southern Africa (Grout & Moore 2015), only woolly whitefly Aleurothrixus floccosus (Maskell) was covered in the text while Aleurocanthus spiniferus (Quaintance), Aleurocanthus woglumi Ashby and Aleurocanthus zizyphi Priesner&Hosny were only listed. These three species of Aleurocanthus are generally under biological control (Bedford et al. 1998) and Aleurocanthus spiniferus is a good example of an invasive species that was controlled successfully using classical biological control (van den Berg et al. 1990; van den Berg & Greenland 1996). Occasionally, other indigenous whitefly species appear on commercial citrus for a year or two, or in home gardens, but these are usually controlled biologically and are not considered problematic. The woolly whitefly is currently the most important whitefly on citrus in South Africa and an update on its status and classical biological control is given below. Two other whitefly species that have not previously been problematic on citrus in South Africa are being recovered on a regular basis at specific locations and are also discussed below: these are Aleurocanthus delottoi Cohic and Paraleyrodes bondari Peracchi.

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