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The spots, which may be as much as 12 mm across, are generally circular and have an irregular edge often with a yellow halo. Leaves frequently turn yellow and fall early. Sometimes new leaves are produced, and these may also become affected. Continual defoliation will cause weakness, dieback or death of the plant. Some very susceptible species ...
Scirtothrips dorsalis, the chilli thrips [derivation 1] or yellow tea thrips, is an extremely successful invasive species of pest-thrips [1] which has expanded rapidly from Asia over the last twenty years, and is gradually achieving a global distribution. It has most recently been reported in St. Vincent (2004) Florida (2005), Texas (2006), and ...
However, some thrips, including rose thrips, onion thrips, and western flower thrips, damage plants. They can weaken vegetables and flowers and even spread plant diseases . What Do Thrips Look Like?
The virus infects more than 648 species of plants including important horticultural and agricultural species such as fuchsia, tomato, orchids, [2] and lettuce (especially romaine). As the name implies, the main symptom on plants is necrotic spots that appear on the leaves.
As adults, tomato hornworms turn into five-spotted hawk moths, but while in caterpillar form, the bugs can wreak havoc on your tomato plants. The hornworms can completely defoliate a plant, and ...
They are polyphagous as they feed on a wide range of different fruits and ornamental plants. [6] [7] [10] Ornamental plants that they infest are the azaleas, calla lilies, chrysanthemums, fuchsia, roses [5] and orchids. [6] They also are considered pests to ferns, [8] palms and vines and vegetative plants as well. [15]
The Thripidae are the most speciose family of thrips, with over 290 genera representing just over two thousand species. [2] They can be distinguished from other thrips by a saw-like ovipositor curving downwards, narrow wings with two veins, and antennae of six to ten antennomeres with stiletto-like forked sense cones on antennal segments III and IV.
The generic and English name thrips is a direct transliteration of the Ancient Greek word θρίψ, thrips, meaning "woodworm". [4] Like some other animal-names (such as sheep, deer, and moose) in English the word "thrips" expresses both the singular and plural, so there may be many thrips or a single thrips. Other common names for thrips ...