• Diglyphus isaea

  ). Release parasitic wasps between the leaves of the crop in the morning or in the evening The dosage of the parasitic wasp Diglyphus isaea depends on [...] feed on leafminers but sustains itself on nectar and honeydew. Life cycle and appearance of Diglyphus isaea Because Diglyphus isaea is an ectoparasite, all [...] Larval stage: When the parasitic wasp larva hatches, it remains beside its host, punctures it and sucks it empty from the outside, as a result of which

• Broad mite

  indication of an attack of broad mite ( Polyphagotarsonemus latus ), is the appearance of dark brown edges at the base of young leaves. In case of a mild [...] caused by viruses. The typical pattern of damage consists of malformation and distortion of the above-ground growth of the plant. The mites show a preference [...] undersides of young, expanding leaves. Symptoms of an attack remain visible several weeks after the mites have been removed. Life cycle and appearance of Broad

• Cryptolaemus montrouzieri

  ceases at temperatures below 9°C. Life cycle of Cryptolaemus montrouzieri You can recognize the different life stages of the predatory beetle Cryptolaemus [...] between 25°C and 28°C (68 and 82°F). Feeding behaviour of Cryptolaemus montrouzieri All moving stages of Cryptolaemus montriouzieri prey on mealybugs , seizing [...] appear to prey on all stages of mealybugs equally. Adult ladybirds are good fliers and can disperse over a large area in search of prey. Although Cryptolaemus

• Garden chafer

  ornamental plants. Life cycle and appearance of Garden chafer The life cycle of the garden chafer ( Phyllopertha horticola ) has the following stages: egg, 3 larval [...] family. It does most of its damage in the larval stage when it feeds on roots of grasses and clover. The adults feed on the leaves of trees like oak, hazelnut [...] fruits of, for instance, roses and cherries. Damage symptoms The garden chafer ( Phyllopertha horticola ) does most of its damage in the larval stage when

• May beetle

  adults and larvae of this genus, they are usually treated as a single group, sharing similar habits and biology. The larval stages of these beetles are [...] water stress and ultimately ending in the death of the plant. From the third stage onwards, the impact of this pest increases. Damage symptoms Initial damage [...] later leads to signs of wilting and stunted growth. Lifecycle and appearance of the may beetle The adults belonging to the majority of Phyllophaga species

• Common cockchafer

  larval stage, when it feeds on roots of grasses and clover. The adults feed on the leaves of trees, mainly on oak, maple, beech and plum. Life cycle and [...] and appearance of Common cockchafer The life cycle of the common cockchafer ( Melolontha melolontha ) has the following stages: egg, three larval instars [...] European beetle of the genus Melolontha, in the family Scarabaeidae. Damage symptoms The common cockchafer ( Melolontha melolontha ) does most of its damage

• Encarsia formosa

  reliance on chemical pesticides. Life cycle and appearance of Encarsia formosa The development of E. formosa consists of six stages: the egg, three larval instars [...] it may be better to switch to the use of Enermix or Ercal . Consult a Koppert advisor or a recognised distributor of Koppert products for advice on the best [...] hours average temperature below 17°C/63°F the control of whiteflies may be insufficient. Behaviour of the parasitic wasp Encarsia formosa Encarsia formosa

• Pepper weevil

  When they hatch inside an immature fruit, they move towards the middle of the mass of young seeds; whereas, when they hatch inside the flower bud, they feed [...] total, the larva passes through three larval stages during which its only activity is feeding; the larval stage lasts around seven to eight days, depending [...] Overview They belong to the Curculionidae family, which is made up of more than 40,000 species. They have very hard bodies and are small in size. They

• Pea leaf miner

  is affected. The size of a leaf tunnel depends on the stage of development of the leaf, the species of host plant and the species of leaf miner. The older [...] located at the base of the leaf. Life cycle and appearance of Pea leaf miner The life cycle of a leaf miner has the following stages: egg, three larval [...] tomato and melon. Loss of leaves also reduces yield. In full-grown plants of fruiting vegetable crops, however, a considerable quantity of foliage can get damaged

• Whitefly

  the spread of diseases. Biological control of whiteflies uses a combination of natural enemies and tools that target different pest stages: Parasitic wasps [...] Here are some of the common signs of whitefly damage: Yellowing of leaves: Whiteflies feed on plant sap, which can cause the leaves of infested plants [...] and stems of infested plants. Sooty mold: Honeydew can also promote the growth of a black, sooty mold that can cover the leaves and stems of infested plants