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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 ...
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 ...
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.
Boxelder bugs only feed on box elder seeds and leaves, so they don't actually cause damage to most plants. "They appear in high numbers which leads people to get concerned when you see 50, 60 ...
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 ...
The western flower thrips [Frankliniella occidentalis (Pergande)] is an invasive pest insect in agriculture. This species of thrips is native to the Southwestern United States [ 1 ] but has spread to other continents, including Europe , Australia (where it was identified in May 1993 [ 1 ] ), and South America via transport of infested plant ...
H. haemorrhoidalis prefers feeding on mature foliage [8] and the nitrogen levels of the foliage actually also plays a role in the thrips' preference. [17] The leaves that have undergone attacks by the greenhouse thrips ended up with a lead-like to silvery colouring. [6] [10]
Before any potential benefits appear, the procedure reportedly initially leaves small, raised bumps under the skin, creating a temporary honeycomb-like texture. This effect has led some to ...