Beet armyworm

armyworm (Spodoptera exigua) lays its eggs in packets, sometimes in several layers, and on top of a mass of white, cottony hairs and scales from the moth’s [...] greenish or pinkish, are laid at night, preferably low in the crop on the underside of leaves, in groups of 10 to 250 eggs. They hatch after several days, revealing [...] the ground in preparation for pupation. Although pupation sometimes occurs in the crop, it usually takes place on the surface of the ground in a loosely

Black vine weevil

appearance of Black vine weevil The life cycle of the black vine weevil consists of an egg, 6 or 7 larval instars, a pupal instar and the adult beetle. In temperate [...] often be found between the inside of a plant pot and its contents, under lumps of e, in vegetation and under planks etc . In temperate climates, the small [...] sulcatus, is a pest in many ornamental crops (e.g. rhododendron, cyclamen and azalea), as well as in strawberries and other fruit crops in both temperate and

Diamond back moth

They are deposited singly or in small groups of two or ten eggs on both the upper and lower surface of leaves, preferentially in depressions, and rarely on [...] long distances to invade crops in other regions. Life cycle and appearance of Diamond back moth The oval and flattened eggs of the diamond back moth (Plutella [...] often stick to leaves and frequently hide in crevices near the bud. In cauliflower and broccoli, pupation may occur in the florets. Initially, the pupa is

Rose aphid

serious and often abundant pest of roses. It is virtually cosmopolitan and widely spread in Europe. Life cycle and appearance of Rose aphid Aphids have a complex [...] complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses, reproduction takes place by parthenogenesis [...] on rose bushes in the egg stage, although in mild winter some adults may continue to reproduce parthenogenetically. Large colonies of aphids can build

Buckthorn-potato aphid

appearance of Buckthorn-potato aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses [...] overwinter as eggs on buckthorn. After emerging in spring, the aphids mainly feed on the underside of leaves of their summer hosts and start to reproduce p [...] produced parthenogenetically. They are usually found in the lower parts of the plants and are not very mobile. In autumn, winged males and females are produced

Black bean aphid

appearance of Black bean aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses [...] is widespread in temperate regions, where it is a serious economic pest of beans. It is highly polyphagous, and attacks a wide range of other crops. Life [...] therefore need to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop and its fruit

Onion thrips

finally the adult insect. The eggs of the onion thrips (Thrips tabaci) are laid in leaves, flower petals and in the soft parts of stalks. They are inserted into [...] leaves and the black dots of their excreta indicate their presence in the crop. The vigour of the plant is reduced by loss of chlorophyll. When infestations [...] thrips (Thrips tabaci) usually pupate in the ground, although pupae can also be found on leaves, in flowers or in other sheltered places. The prepupal and

Western flower thrips

insect. The eggs of the western flower thrips (Frankliniella occidentalis) are laid in leaves, flower petals and in the soft parts of stalks. They are [...] leaves and the black dots of their excreta indicate their presence in the crop. The vigour of the plant is reduced by loss of chlorophyll. When infestations [...] (Frankliniella occidentalis) usually pupate in the ground, although pupae can also be found on leaves, in flowers or in other sheltered places. The prepupal and

Shallot aphid

widely spread in Europe. Life cycle and appearance of The shallot aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and [...] sexual stage in the life cycle. No eggs are produced. Myzus ascalonicus is cold hardy and overwinters in sheltered places and greenhouses. Numbers of this aphid [...] the end of the storage period causing malformation of new plants. Solution Finder Find solutions for your crop Damage symptoms How to get rid of The shallot

Tomato leaf miner

damage. In (sub-)tropical 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 [...] crop damage in many parts of the world, including North Africa, Europe and northern Asia. In warmer regions, the insect is found outdoors but in temperate [...] occurs in greenhouses. The tomato leaf miner has been found in greenhouses for decades, but has become a common pest since the 1960’s, particularly in sweet