But there are certain crops that they are more prone to infesting, such as hibiscus, lantana and poinsettia, etc. Description: The Greenhouse whitefly is a small sap-sucking insect that infests and feeds on the undersides of leaves. 5. It can feed on many vegetables and ornamental plants grown in greenhouses as well as house-plants. If cyanide poisoning is responsible for reduced feeding and mortality of non-cassava whitefly, the corollary is that cassava whiteflies must have detoxification mechanisms that enable them to feed on cassava as well as a broad range of other host plants (Sseruwagi et al., 2006). Greenhouse whitefly adults are more active at temperatures of 75F while sweet potato whitefly B-biotype adults are more active at temperatures greater than 80F. Adult females begin to lay eggs 2-3 days after emergence. Adult whiteflies are white and fly in a weak, random manor. It will feed on a broad range of host plants. Furthermore, the two viruses can be distinguished using differential molecular probes (29). Glasshouse whitefly is a sap-sucking true bug that can reduces the vigour of plants and excretes a sticky, sugary substance, called honeydew, on the leaves, stems and fruits of its host plants. Where Found: Throughout UK and Europe. Host Plants: In the garden: A wide range of ornamental and edible plants On Crops: A wide range of ornamental and edible plants. Most whitefly species have a narrow range of host plants, but the ones that are considered pests may feed on and damage many vegetable and field crops, greenhouse and nursery crops and house plants. The greenhouse whitefly is a common pest of houseplants and greenhouse plants. The glasshouse whitefly, Trialeurodes vaporariorum, is a damaging crop pest and an invasive generalist capable of feeding on a broad range of host plants. Many species of plants grown under glass are liable to attack by T. vaporariorum. “As with most insect pests they have their favorite plant species to feed on. Wageningen Agricultural University Papers, 92-3, 102 pp. The total world record of greenhouse whitefly host plants is approximately 859 species, belonging to 469 genera in 121 families. Similar to the B-biotype whitefly, Q-biotypes are not picky about which plants they choose. Development from egg to adult takes 14-40 days depending upon temperature, host plant and whitefly species. This insect has a host range of more than 250 ornamental and vegetable plants, including the poinsettia, begonia, hibiscus, aster, cucumber, tomato, grape and bean. Life-history parameters of the greenhouse whitefly, Trialeurodes vaporariorum as a function of host plant and temperature. sively by the greenhouse whitefly (Trialeu-rodes vaporariorum Westwood), ToCV can be transmitted by T. vaporariorum and also by the banded wing whitefly (T. abutilonea Haldeman) and Bemisia tabaci (Genna-dius) biotypes A and B (4,5). The greenhouse whitefly has a large host range including avocados, beans, blackberries and other berries, cucumbers, eggplants, lettuce, melons, peas, peppers, tomatoes, and many ornamentals, and these alternate hosts serve as sources for whiteflies that enter strawberry fields. The name whitefly is derived from the generally white, wax-like substance that coats their bodies, particularly the wings. Wageningen Agricultural University Papers, 92-3, 102 pp. of economic importance. As such this species has evolved mechanisms to circumvent the wide spectrum of anti-herbivore allelochemicals produced by its host range. 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