• Aphids

  g. strawberries), aphid eggs have been observed. Aphids damage Depending on the species, aphids can inflict various types of damage to a crop: Nymphs and [...] nicotianae ( tobacco aphid ) on various vegetable and ornamental crops. Aphis gossypii ( cotton aphid ), mainly on Cucurbitaceae, but also on chrysanthemums [...] markings or stripes on their bodies. Movement: Aphids are slow-moving and tend to cluster on the undersides of leaves, where they feed on plant sap. They may

• Tobacco aphid

  tobacco aphid tends to form denser colonies, closer to the top of the plant, than the peach potato aphid. It is not known to what extent tobacco aphids ( Myzus [...] is asexual, the young aphids are born as developed nymphs. They immediately start to feed on plant sap and grow rapidly. Aphids moult four times before [...] General The tobacco aphid ( Myzus persicae subsp. nicotianae ) probably evolved from the peach potato aphid in the Far East and is a key pest of tobacco

• Cotton aphid

  The cotton aphid ( Aphis gossypii ) is an extremely polyphagous aphid found on more than 700 plant species. Crop plants attacked by this aphid include cotton [...] y affecting cucumber. Damage symptoms The cotton aphid ( Aphis gossypii ) is an important vector for viral diseases. This aphid species can transmit more [...] same time, photosynthesis in the leaves is reduced, affecting production. Life cycle and appearance of Cotton aphid Aphids have a complex life cycle, with

• Green peach aphid

  different families. Damage symptoms Of all the aphids , the peach potato aphid ( Myzus persicae subsp. persicae ) is the most important vector of viral [...] young aphids are born as developed nymphs. They immediately start to feed on plant sap and grow rapidly. When reproduction is sexual, the aphids lay eggs [...] distribution. The green peach aphid ( Myzus persicae subsp. persicae ) is a particularly polyphagous aphid with summer host plants from more than 40 different

• Caterpillars

  20880.jpg Buckthorn aphid Aphis nasturtii Koppert Natupol_Fly_checklist_6.jpg Pear sucker Cacopsylla pyri Psyllid damage on leaves Koppert Squash_Kopp [...] Caterpillars are highly destructive pests that feed on leaves, stems and fruits, causing serious damage to greenhouse and field crops. Their feeding reduces [...] serious economic damage. Most species feed on leaves and young shoots, and their enormous feeding capacity can rapidly decimate a plant. Very small ca

• Mealybugs and scales

  20880.jpg Buckthorn aphid Aphis nasturtii Koppert Natupol_Fly_checklist_6.jpg Pear sucker Cacopsylla pyri Psyllid damage on leaves Koppert Gummy stem blight [...] the damage they cause by sucking plant sap, mealybugs and soft scales also produce honeydew (on which moulds grow) resulting in considerable damage in [...] also against synthetic pesticides. Mealybug & scale damage Although most species of mealybugs feed on the aerial parts of the plant, some species extract

• Beetles

  in other species also feed on leaves. Adult beetles cause damage by feeding on fruits, flower buds and leaves depending on the species. Life cycle of beetles [...] control of beetles Beetles can cause serious damage in many greenhouse and field crops by feeding on leaves, roots, or fruits, leading to reduced growth [...] cannot fly at all. Beetle damage Both larvae and adults of beetles can cause damage to crops. The larvae of some species feed on growing tips and roots or

• Predatory insects

  control agents. Female gall midges lay their eggs on plant leaves, and when the larvae hatch, they feed on aphids. Gall midges are considered beneficial insects [...] referred to as "aphid lions," are particularly effective in controlling aphids . They use their strong jaws to grasp and consume aphids at a high rate. [...] from the damage caused by these pests. Gall midges Gall midges play a beneficial role in natural pest control, particularly in controlling aphids and spider

• Aphidoletes aphidimyza

  larva depends on temperature, relative humidity, age and size of the aphids, and the aphid species. The time required to consume an aphid can vary from [...] actively feed on aphids and can often be found near aphid-infested areas. Pupal Stage: When the larvae are full-grown they jump from the leaves and Aphidoletes [...] depends on climate, crop and aphid density and should always be adjusted to the particular situation. Start introduction as soon as the first aphids are detected

• Whitefly

  very large, feeding on plant sap can affect the physiology of the plant, as a result of which growth is retarded. In full sunlight, leaves can wilt and drop [...] unsaleable. In serious cases the fruit will rot. Sooty moulds also develop on the leaves, reducing photosynthesis and transpiration. Viruses can be transmitted [...] whitefly Whiteflies are common pests in greenhouse and field crops, feeding on plant sap and transmitting harmful viruses. Their feeding weakens plants,