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When are thrips most active?
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thrips
Western flower thrips (Frankliniella occidentalis).
Thrips are primarily active during daylight hours. Their activity levels are also influenced by environmental conditions and geography:1
- Seasonal Activity: In tropical regions, many species exhibit higher activity levels during wet seasons compared to dry seasons. In temperate regions with cold winters, thrips hibernate as adults or immature forms, with populations often replenished by spring migrants from warmer areas.1
- Environmental Sensitivity: While adults may occasionally be found in bright light on the upper surfaces of leaves, they generally prefer to rest in crevices or against leaf veins. Larvae are typically found in shaded locations, such as the undersides of leaves or branches. Additionally, some species are sensitive to relative humidity.1
Beyond these factors, their life cycle—which can involve multiple generations per growing season—dictates when they are present and feeding on host plants.2