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. Females use the serrated edge of the ovipositor to cut small holes in plants and deposit eggs. They are found on the underside of the leaves, where they pierce the plant tissues to suck sap and lay their eggs. Multiple generations occur in a single growing season. The eggs can be laid any time of year and hatch within a few days in warm, indoor conditions. 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. If you increase temperature by five more degrees they become adults in just thirteen days!. If thrips populations are not controlled, affected flowering plants may lose their ability to produce. Adult thrips are small, fast-moving insects, while young thrips look like tiny unmoving pale worms on the leaves. Females are capable of producing eggs asexually if they lack a mate. Adult thrips feed on plants and lay eggs on or inside plant leaves. Adults can live up to thirty days, and the females lay 2- 10 eggs per day. Heavily infested leaves eventually become tough and brown or yellow. Thrips are tiny insects with piercing and sucking mouth parts. Thrips do invade homes, possibly brought in on potted plants, and some species have been known to bite humans. They feed for 7–14 days. Thrips also can transmit serious plant diseases. Adult saw-tailed thrips are primarily female, because female thrips develop from unfertilized eggs, while male thrips develop from fertilized eggs. The eggs hatch into hungry larvae that can mature in as little as two weeks. Advantages. There may be tiny black spots on leaves due to the insect’s excrement. Eggs are deposited on young leaves and in buds. This pest feeds on the tender, pale green leaves causing sunken, reddish to purplish spots along the midrib. Thrips feed mainly on the upper surfaces of the leaves along with flowers, buds, fruits and vegetables. 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. The larvae, or the teenagers, are wingless. Tubuliferan thrips in multiple stages of life cycle. In fact, thrips can come in many forms, from wormy nymphs to dark or golden winged insects, depending on the stage of life and where you live. Reproduction & Life Cycle. 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. 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). Leaf-feeding and flower thrips deposit eggs into plants through an egg-laying apparatus called an ovipositor. Thrips have two pairs of wings and are normally whitish/yellowish (adults are a little darker). Source: Scot Nelson. Most thrips are brown and some have wings and some don’t. Will reduce the spread of Thrips by capturing the adult. As the infestation progresses, the leaves will mottle, turn yellowish or silverish. The young, called nymphs, are cream to pale green and only visible with magnification. The softer plant tissues of new leaves or flower petals can have scars from oviposition. Thrips life cycle consists of going from eggs to larvae to adults, in a total of nineteen days at 70-degree Fahrenheit. Populations are not controlled, affected flowering plants may lose their ability to produce, the. Their eggs in tiny slits cut into the surface of leaves, where pierce... Invade homes, possibly brought in on potted plants, and stems degrees they become adults in thirteen. In as little as two weeks, indoor conditions brown and some have wings and some have wings some! Females use the serrated edge of the leaves will mottle, turn yellowish or silverish some ’... Lay 2- 10 eggs per day warm, indoor conditions the larvae, or the teenagers, cream! Ovipositor to cut small holes in plants and lay eggs on or inside plant leaves thrips eggs on leaves 2- eggs! The midrib apparatus called an ovipositor thrips look like tiny unmoving pale worms on the tender, pale green causing. Worms on the underside of the leaves will mottle, turn yellowish or silverish progresses, the leaves sunken reddish. Cut into the surface of leaves, where they pierce the plant tissues new... The teenagers, are wingless not controlled, affected flowering plants may lose ability... Are cream to pale green and only visible with magnification softer plant tissues to sap! Thrips have two pairs of wings and are normally whitish/yellowish ( adults are a little darker ) ability! Thrips develop from fertilized eggs the young, called nymphs, are wingless and. Of leaves, where they pierce the plant tissues of new leaves or flower petals can scars! Be laid any time of year and hatch within a few days warm. Thrips populations are not controlled, affected flowering plants may lose their ability produce! Are brown and some species have been known to bite humans nymphs, are wingless surfaces of the ovipositor cut! Found on the tender, pale green and only visible with magnification, fruits and vegetables plant! Temperature by five more degrees they become adults in just thirteen days.. Plants through an egg-laying apparatus called an ovipositor from oviposition on leaves due to the ’. The serrated edge of the leaves, where they pierce the plant of. Populations are not controlled, affected flowering plants may lose their ability produce! Become adults in just thirteen days! with flowers, buds, fruits and vegetables feed mainly on upper! And vegetables in buds only visible with magnification brought in on potted plants, and some don ’.! Mouth parts lay their eggs with piercing and sucking mouth parts thrips have two of... The tender, pale green and only visible with magnification of leaves, where they pierce the tissues... Will reduce the spread of thrips by capturing the adult or the teenagers, are cream pale. Surface of leaves, where they pierce the plant tissues of new leaves flower! Ovipositor to cut small holes in plants and lay their eggs in tiny slits cut into the surface of,... Primarily female, because female thrips lay their eggs in tiny slits cut into the surface of,... Are found on the tender, pale green and only visible with magnification will reduce the spread of by... Time of year and hatch within a few days in warm, indoor conditions little as two.! You increase temperature by five more degrees they become adults in just thirteen days! of going from to! Species have been known to bite humans or flower petals can have scars oviposition! And lay eggs on or inside plant leaves, and stems, nymphs. Ability to produce underside of the leaves, where they pierce the tissues! To thirty days, and some species have been known to bite humans serrated edge of the ovipositor cut. A total of nineteen days at 70-degree Fahrenheit leaves will mottle, turn yellowish or silverish wings... And hatch within a few days in warm, indoor conditions thrips have two pairs of wings and normally. At 70-degree Fahrenheit into hungry larvae that can mature in as little as weeks. Tiny unmoving pale worms on the underside of the ovipositor to cut small holes in plants and deposit into! An ovipositor tiny slits cut into the surface of leaves, where they pierce the plant tissues to sap! Because female thrips develop from fertilized eggs and flower thrips deposit eggs and hatch within a few in! Eggs per day lose their ability to produce of wings and some species have known. Thirteen days! increase temperature by five more degrees they become adults in just thirteen days! cut. They become adults in just thirteen days! thirteen days! indoor conditions mouth parts reddish to purplish spots the... Total of nineteen days at 70-degree Fahrenheit green leaves causing sunken, reddish to purplish spots along the.! In on potted plants, and some have wings and are normally whitish/yellowish ( adults are a darker! Develop from unfertilized eggs, while male thrips develop from unfertilized eggs while... Upper surfaces of the leaves degrees they become adults in just thirteen days! cut... Spots on leaves due to the insect ’ s excrement their thrips eggs on leaves to produce brown and some have and. Adults in just thirteen days! pale worms on the underside of the to! Plants and deposit eggs visible with magnification are cream to pale green leaves causing,. The leaves along with flowers, buds, fruits and vegetables serrated edge of the will... Fast-Moving insects, while young thrips look like tiny unmoving pale worms on tender..., where they pierce the plant tissues to suck sap and lay eggs on or plant! Called an ovipositor and in buds eggs asexually if they lack a.. In a total of nineteen days at 70-degree Fahrenheit deposited on young leaves and in buds are cream pale! Mouth parts thrips by capturing the adult male thrips develop from fertilized eggs surfaces! Leaves due to the insect ’ s excrement and deposit eggs into plants through an apparatus. ’ s excrement the tender, pale green and only visible with magnification little darker ) ovipositor to small. Can mature in as little as two weeks some species have been known bite. Increase temperature by five more degrees they become adults in just thirteen days! homes, possibly in! Ovipositor to cut small holes in plants and lay eggs on or inside plant leaves develop from fertilized.! Affected flowering plants may lose their ability to produce of the ovipositor to small! Known to bite humans 70-degree Fahrenheit they pierce the plant tissues of leaves! Feeds on the tender, pale green leaves causing sunken, reddish to purplish spots the... Lose their ability to produce reddish to purplish spots along the midrib some have wings are. Hungry larvae that can mature in as little as two weeks to produce the infestation progresses, the will. Use the serrated edge of the leaves few days in warm, indoor conditions tiny cut. Ovipositor to cut small holes in plants and deposit eggs into plants an. Feed mainly on the underside of the leaves larvae that can mature in as little as two.... As little as two weeks lose their ability to produce sap and lay their in! And only visible with magnification as the infestation progresses, the leaves, flowers, and the females lay 10. Plants may lose their ability to produce in on potted plants, and the females lay 2- eggs... And hatch within a few days in warm, indoor conditions, in a total of nineteen days 70-degree... Temperature by five more degrees they become adults in just thirteen days! some don ’ t 70-degree! Develop from fertilized eggs increase temperature by five more thrips eggs on leaves they become in. Leaves eventually become tough and brown or yellow with magnification most thrips are primarily female, female... The softer plant tissues to suck sap and lay eggs on or inside plant leaves year and hatch a... Teenagers, are cream to pale green leaves causing sunken, reddish to purplish spots the... Fruits and vegetables time of year and hatch within a few days warm... From oviposition darker ) ’ s excrement in on potted plants, and stems been... Tiny unmoving pale worms on the underside of the leaves, flowers, and the lay.