Horse-chestnut leaf miner

horse-chestnut leaf miner overwinters in the pupal stage in a cocoon in dead leaves. The emergence of adults in spring occurs in April and May, depending on climatic [...] European horse-chestnut in Greece, Albania and Macedonia. It was first observed attacking ornamental horse-chestnut trees in Macedonia in the 1970s, from where [...] larvae mine in horse chestnut leaves go to four (occasionally five instars) and their size varies form 0.5 mm in the firsts instar up to 3.5 mm in the fourth

Yellow rose aphid

white skin, betraying their presence in the crop. The yellow rose aphid is holocyclic in North America (i.e. they mate in autumn and produce eggs to overwinter) [...] generally found only on cultivated roses and strawberries, in glasshouses in northern Europe or outdoors in warmer climates. Wingless yellow rose aphids have a [...] cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses, reproduction takes place by parthenogenesis, with unfertilized

Bugs

These biological solutions help monitor, attract and eliminate harmful bugs in different crop stages. With Koppert’s biological solutions for bugs, professional [...] bug control Learn more about What are bugs? Heteropteran bugs form a group in the order Hemiptera , a highly diverse group of insects, containing both harmful [...] beetles , which have hard, leathery forewings that meet, but do not overlap, in the dorsal midline. Some bugs produce a pungent odour. Heteropteran bugs are

Crane flies

during the autumn.. Larvae overwinter in the soil, usually in the third instar stage. and start feeding again in spring. They become active again and feed [...] Eggs are black in colour, oval, 1mm long and deposited on the soil surface. Larvae are cylindrical, tapering toward the head, and grey-brown in colour. Larvae [...] feed voraciously when the soil begins to warm up in spring. The larvae pupate below the soil surface in summer. The pupal stage lasts about two weeks.

Citrus mealybug

many and diverse host plants. In temperate regions of the world this mealybug poses a problem in greenhouse horticulture, and in the tropics and sub-tropics [...] especially in fruit trees and ornamental crops, particularly in pot plants such as ficus, palms, schefflera, croton and kalanchoë, but also in roses and [...] yield. Flowers and fruit often drop off. Plant sap is rich in sugars, but low in proteins. In order to gain an adequate intake of protein, mealybugs must

Rose aphid

is dark in colour. The siphunculi are black and bent outwards. The rose aphid usually overwinters on rose bushes in the egg stage, although in mild winter [...] cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses, reproduction takes place by parthenogenesis, with unfertilized [...] colonies of aphids can build up on roses in spring and summer; sometimes shoots are completely covered by aphids. In summer, winged aphids spread the infestation

Western flower thrips

(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 [...] many vegetable and ornamental crops in greenhouses, and on various weeds. It is an especially significant pest in cucumber, sweet pepper, eggplants, and [...] western flower thrips (Frankliniella occidentalis) are laid in leaves, flower petals and in the soft parts of stalks. They are inserted into the plant tissue

Southern European marshland pyralid

prolegs. Caterpillars are found in webs, preferably in damp, humid places and are thus mainly found low in the crop, often in decaying organic material on [...] caterpillars pupate in an earthen cocoon, concealed either within the crop or in another suitable spot in the vicinity. Pupation occurs in a cocoon made of [...] at night, but can sometimes be seen in the daytime. Eggs are laid singly or in groups of 5 to 10 eggs, overlapping in a tile-like fashion on both the upper

Onion thrips

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 [...] develops in six stages: egg, two larval instars, prepupa, pupa, and finally the adult insect. The eggs of the onion thrips (Thrips tabaci) are laid in leaves [...] petals and in the soft parts of stalks. They are inserted into the plant tissue with a saw-like ovipositor. Larvae are light to yellowish green in colour,

Impatiens thrips

as a consequence of the trade in foliage plants. Impatiens thrips (Echinothrips americanus) has a wide range of hosts. In addition to many ornamental plants [...] present on weeds in greenhouses. Life cycle and appearance of Impatiens thrips Impatiens thrips (Echinothrips americanus) develops in six stages: egg, [...] themselves can shrivel. Echinothrips americanus is often found low in the crop. In sweet pepper the damage can be seen as discolouration of older leaves