Damage: The western flower thrips feeds on the flowers and foliage by inserting its modified left mandible into the tissue, and sucking the fluids from cells. Onion thrips is a key pest of onions, but will also attack the young growth of capsicum, cucumbers and the flowers of some flower crops. Both viruses affect a wide range of plants, and often a single host plant may be infected by both viruses. Volatiles collected by entrainment of a solvent extract of F. ulmaria were more attractive than was the original extract. Rearing of Western Flower Thrips.A culture ofF. Crops attacked by this pest include beans, burdock (gobo), capsicum, cucumber, eggplant, lettuce, onion, tomatoes and watermelon. The western flower thrips were originally from the western US, but began to spread in the 1960s and are now a global pest. As a result, you typically see the damage they cause well before seeing the insects themselves. Feeding by these tiny insects causes plant cells to collapse, which may eventually result in distorted The second most abundant predators were spiders (Araneae). Plant length and leaf area of non-flowering Dendranthema grandiflora Tzvelev were reduced after WFT infestation, and these two variables were correlated. The western flower thrips (Frankliniella occidentalis) is the most important vector for both tomato spotted wilt virus (TSWV) and impatiens necrotic spot virus (INSV). Scarring on avocados. The behavioural responses of adult female western flower thrips, Frankliniella occidentalis (Pergande) to volatiles from meadow-sweet (Filipendula ulmaria), bay laurel (Laurus nobilis) and sage (Salvia officinalis) were investigated in laboratory bioassays. Introduction . Western flower thrips (WFT) Frankliniella occidentalis continues to be a serious pest of floriculture crops in New England. Thrips palmi was first described by H. Karny in 1925 from specimens collected in 1921 on tobacco in Sumatra. We confirmed whether α-ionone is effective for the combination of Arabidopsis and western flower thrips by releasing adult female thrips onto the leaf surface of wild-type (Col-0) plants that were treated with 300 μM α-ionone. Western flower thrips (WFT), Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) is a native insect of the western part of North America that was first reported in 1895.In the 1970s and early 1980s, this species spread throughout North America (Beshear 1983). The western flower thrips [Frankliniella occidentalis (Pergande)] is an invasive pest insect in agriculture. Onion thrips (Thrips tabaci), top, and western flower thrips (Frankliniella occidentalis), bottom are typical thrips, none to easy to tell apar! Western flower thrips, Frankliniella occidentalis, feeds in a piercing sucking manner and is a worldwide pest on many ornamental and vegetable crops. On avocados, thrips can cause brown or silver scarring on the fruit. Western flower thrips has a punching-sucking feeding habit, using the mandible to punch a hole into the host and then inserting the maxillae into the opening. Western Flower Thrips John P. Sanderson Introduction. Unfortunately, there is little basic ecophysiology information on the response of western flower thrips to host plant chemistry. To avoid misunderstand-ings and misinterpretations, it is clear that the term “host plant” must be applied in the proper context. Western flower thrips attack a wide range of plants including: carnations, chrysanthemums, corn, cotton, cucumbers, eggplants, gerberas, grapes, impatiens, melons, peaches, peanuts, peas, and peppers. Small spider immatures (first and second instars) of several species were common on certain host plants, and are likely to feed on WFT. ) and melon thrips ( WFT ), forms a key agri‐ and horticultural pest.. 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