Rose aphid

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

Cabbage leafroller

y gerbera. In chrysanthemum too, this species is an increasing problem, and it has caused problems in sweet pepper since the mid 1980’s. In protected soft [...] body. The antennae are thin and of medium length. The moths fly when it is dark. The yellow eggs are laid in batches of 10 to 90 pieces and covered with [...] light in colour. The ventral surface is lighter than the dorsal, with hairs located in warty spots that are lighter than the general body colour. In general

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 [...] chlorophyll-rich green areas of stems and pods causing whitening of the crop. Heavily damaged plants appear stunted and will, in most cases, die. On rapeseed [...] young seed pods, causing loss of pods and seeds. Life cycle and appearance of Diamond back moth The oval and flattened eggs of the diamond back moth (Plutella

Shallot aphid

the aphids often occur at the end of the storage period causing malformation of new plants. Life cycle and appearance of The shallot aphid Aphids have a [...] complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses, reproduction takes place by parthenogenesis [...] 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

Black bean aphid

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. Damage [...] 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 [...] complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses, reproduction takes place by parthenogenesis

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

Buckthorn-potato aphid

cause plant deformation. The major problem in potatoes is the transmission of viruses. Life cycle and appearance of Buckthorn-potato 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 [...] 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

Nutemia

cucumeris , Transeius montdorensis ) in the beginning of the season and at low prey densities. Mode of action When density of the target pest is low and there [...] available in the crop Nutemia can be provided as alternative food source for predatory mites . This will ensure a standing army of predatory mites in the crop [...] tolerant to a wide range of conditions and generally survives in conditions suitable for predatory mites . Precautions Application of this product can cause

Spotted Wing Drosophila

General Since the start of its invasion in 2008/2009, the spotted wing drosophila, which is originally from Asia, has spread extensively in North and South America [...] cycle and appearance of Spotted wing drosophila Adult spotted-wing drosophila are small, 2-3 mm in lengthg, and have a wingspan of 6-8 mm. Males are smaller [...] tubes which stick out of the fruit. There are three larval instars and in the third instar the larvae are about 3.9 mm long. The pupae of Drosophila suzukii

Cyclamen mite

smaller than usual. In cyclamen, the flowers are damaged and leaf growth is inhibited. In hedera, a mite attack can cause baldness in parts of the stem. Gerbera [...] found in cyclamen, gerbera and other ornamentals . Mites belonging to the family of tarsonemids ( Tarsonemidae ) display a greater diversity of feeding [...] to transport pharate females. Eggs of the cyclamen mite are about half the size of the adult mite. They are oval in form, smooth, transparent and twice