• Bean seed fly

  damaged seeds, as bean seed fly larvae feed on seeds and can cause significant damage. Presence of larvae: Small, white maggots near the base of affected bean [...] Overview of Bean seed fly The bean seed fly, officially known as Delia platura , is a common pest that targets bean crops but can attack crucifers, cereals [...] cereals and tubers worldwide. Adult flies lay eggs near the base of bean plants, and upon hatching, the larvae burrow into the soil and feed on the seeds

• Aphidius ervi

  aggressive and can even pursue the aphid to parasitize. Because of this, the disturbance of aphid colonies can have a serious impact. The aphids can be spread [...] conditions for use of Aphidius ervi The parasitic wasp Aphidius ervi is most effective between 20 and 25°C (68 and 77°F). This natural enemy is not effective [...] nectar and water to sustain themselves. Life cycle and appearance of Aphidius ervi Aphidius ervi is a very dark aphid parasitoid. The waist is entirely

• Diglyphus isaea

  isaea is most effective at temperatures between 15°C and 25°C (59 and 77°F). Behaviour of the parasitic wasp Diglyphus isaea Diglyphus isaea is a parasitoid [...] nectar and honeydew. Life cycle and appearance of Diglyphus isaea Because Diglyphus isaea is an ectoparasite, all instars (egg, larva, pupa and adult) [...] colourless and transparent, the second is yellow and semi transparent with a brown fat body, and the third larval instar is blue-green. The full-grown larva

• Black vine weevil

  rhizomes and stem bases of plants. Larvae can also feed above ground within the stems of the plants. Both adult beetles and larvae are polyphagous and feed [...] during the day they hide, and can often be found between the inside of a plant pot and its contents, under lumps of e, in vegetation and under planks etc . In [...] population of black vine weevils consists entirely of females and reproduction is by parthenogenesis. As vine weevils cannot fly their dispersal ability is limited

• Tomato moth

  (particularly chrysanthemums), apple as well as perennial and woody shrubs and trees. The tomato moth ( Lacanobia oleracea) is found throughout Europe, North [...] North Asia and Central Asia, northern India, China, Korea and Japan. Damage symptoms Larger caterpillars eat large areas of leaves and can also attack [...] ed marking, and a thin, toothed white line along the posterior edge of the forewing. As in most noctuid moths, the hindwing is greyish and lighter than

• Chrysoperla carnea

  nectar and honeydew and most will fly out of the greenhouse. Life cycle of Chrysoperla carnea You can recognize the different life stages of the green [...] development of the pupa is visible externally. The outer cocoon is 8 mm long and 4 mm thick. The inner more closely spun cocoon is off-white and egg-shaped [...] Chrysoperla carnea is available at Koppert as Chrysopa and Chrysopa-E . Best conditions for use of Chrysoperla carnea Chrysoperla carnea is effective in a

• Tobacco whitefly

  physiology of the plant, as a result of which growth is retarded. In full sunlight, leaves can wilt and fall. Such leaf damage can in turn influence the [...] tabaci ) is feared because of its high level of resistance to many insecticides and its propensity for the transmission of viruses. Life cycle and appearance [...] larvae of whitefly need a lot of protein for growth, and thus consume a large quantity of plant sap. This contains a high proportion of sugar, and the excess

• Southern European marshland pyralid

  aquatic plants, vegetable crops such as celery, pepper and lettuce, and weeds. The secretive habit of the caterpillars of this species makes them very difficult [...] mm long and have a creamy white colour. Along the dorsal surface of the body there are pairs of dark dots. The dark head is also conspicuous, as are the [...] cocoon made of webbing, frass and soil particles. The pupa itself is yellow-brown, becoming darker as the adult gets closer to emergence, and measures 9

• Pea leaf miner

  tropical and subtropical areas this can lead to burning in fruit such as tomato and melon. Loss of leaves also reduces yield. In full-grown plants of fruiting [...] considerable quantity of foliage can get damaged before the harvest is affected. The size of a leaf tunnel depends on the stage of development of the leaf, the [...] with ornamental crops, this is usually of less significance. Seedlings and young plants can be completely destroyed as a result of the direct damage caused

• American serpentine leaf miner

  tropical and subtropical areas this can lead to burning in fruit such as tomato and melon. Loss of leaves also reduces yield. In full-grown plants of fruiting [...] with ornamental crops, this is usually of less significance. Seedlings and young plants can be completely destroyed as a result of the direct damage caused [...] trifolii ) is highly polyphagous and thus lives on many host plants such as chrysanthemum, gerbera, gypsophila, celery, sweet pepper, pea, bean and potato