The larvae, or the teenagers, are wingless. Females use the serrated edge of the ovipositor to cut small holes in plants and deposit eggs. Plants that have been damaged by thrips become dull green and develop a silvery-white discoloration of the upper surface (A metallic sheen on leaves is one sure indicator of Thrips). If thrips populations are not controlled, affected flowering plants may lose their ability to produce. Thrips life cycle consists of going from eggs to larvae to adults, in a total of nineteen days at 70-degree Fahrenheit. Thrips do invade homes, possibly brought in on potted plants, and some species have been known to bite humans. Thrips feed mainly on the upper surfaces of the leaves along with flowers, buds, fruits and vegetables. Adult thrips are small, fast-moving insects, while young thrips look like tiny unmoving pale worms on the leaves. Advantages. Adult thrips feed on plants and lay eggs on or inside plant leaves. This solution is definitely not a final one but it’s a good way to manage the spread of the infestation until you get can a more serious solution in place. They are found on the underside of the leaves, where they pierce the plant tissues to suck sap and lay their eggs. If you increase temperature by five more degrees they become adults in just thirteen days!. Unlike most caterpillar species, they eat or rasp out a hollow in plant matter in which to lay their eggs, providing them shelter from potential predators. Leaf-feeding and flower thrips deposit eggs into plants through an egg-laying apparatus called an ovipositor. The eggs can be laid any time of year and hatch within a few days in warm, indoor conditions. Adults can live up to thirty days, and the females lay 2- 10 eggs per day. Source: Scot Nelson. Eggs are deposited on young leaves and in buds. Thrips are tiny insects with piercing and sucking mouth parts. Immature thrips cause the leaves to curl inward or fold into a pocket in which the thrips continue to develop and in which they lay eggs. Thrips also can transmit serious plant diseases. Heavily infested leaves eventually become tough and brown or yellow. There may be tiny black spots on leaves due to the insect’s excrement. Most thrips are brown and some have wings and some don’t. They feed for 7–14 days. Female thrips lay their eggs in tiny slits cut into the surface of leaves, flowers, and stems. They’ll attract the adult Thrips and capture them which means that they won’t be able to lay eggs in the other plants. This pest feeds on the tender, pale green leaves causing sunken, reddish to purplish spots along the midrib. Tubuliferan thrips in multiple stages of life cycle. Females are capable of producing eggs asexually if they lack a mate. Reproduction & Life Cycle. The softer plant tissues of new leaves or flower petals can have scars from oviposition. 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