n African Entomology - Molecular discrimination between the spider mite Tetranychus evansi Baker & Pritchard, an important pest of tomatoes in southern Africa, and the closely related species T. urticae Koch (Acarina : Tetranychidae) : short communication
|Article Title||Molecular discrimination between the spider mite Tetranychus evansi Baker & Pritchard, an important pest of tomatoes in southern Africa, and the closely related species T. urticae Koch (Acarina : Tetranychidae) : short communication|
|© Publisher:||Entomological Society of South Africa (ESSA)|
|Author||M. Knapp, B. Wagener and M. Navajas|
|Publication Date||Sep 2003|
|Pages||300 - 304|
During the last two decades, tomato farmers in southern Africa have been facing increasing problems with spider mites (Acari: Tetranychidae). In Zimbabwe and Zambia, these mites are commonly referred to as 'red spider mites' and identified as Tetranychus urticae Koch, T. cinnabarinus (Boisduval) or Tetranychus sp. (Jensen & Mingochi 1988; PPRI 1988). Recent work has shown that Tetranychus evansi Baker & Pritchard is responsible for the spider mite outbreaks on tomato in these countries (Knapp & Luchen 2000). T. evansi is a pest of crops of the family Solanaceae (tomatoes, potatoes, tobacco and others; Bolland et al. 1998) and probably originates from South America. It was recorded for the first time in Africa from tobacco in Zimbabwe in 1979 (Blair 1983). T. evansi is now widespread in southern Africa (Meyer 1996) and also occurs in Kenya (Knapp 2002), Congo (Bonato 1999), Morocco (El Jaouani 1988) and Tunisia (Bolland et al. 1998).
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