Psyllids

Hemp russet mite

russet mite ( Aculops cannabicola ) belongs to the family Eriophyidae (gall and rust mites). It does not produce galls but lives freely (vagrant) on hemp/cannabis [...] cannabicola is host specific to hemp/cannabis ( Cannabis sativa ). It cannot survive on other plants. Damage symptoms Damage is caused by the mites sucking [...] sucking out the contents of plant cells. Hemp russet mite develops on the stems and petioles of the hemp plant and can cause stunting. When populations are

Limonica Ulti-Mite

Pests Larvae of various species of thrips (first and second larval stages); eggs and larvae of greenhouse whitefly ( Trialeurodes vaporariorum ) and tobacco [...] whitefly ( Bemisia tabaci ). Crops Do not use in tomato. Mode of action Predatory mites multiply in the sachet and disperse into the crop over a period of [...] of several weeks. Predatory mites use their piercing mouthparts to extract the contents of their prey. The Ulti-Mite slow-release sachet, made from 100%

Horse-chestnut leaf miner

Cameraria ohridella , probably originates from natural stands of the European horse-chestnut in Greece, Albania and Macedonia. It was first observed attacking [...] attacking ornamental horse-chestnut trees in Macedonia in the 1970s, from where it spread to most of Europe. Since then, in all invaded regions, outbreaks have [...] causing aesthetic damage to horse-chestnut, one of the favourite ornamental trees in European cities. Damage symptoms Larvae of the horse-chestnut leaf

Cactus mealybug

(formerly known as Spilococcus cactearum ) is a pest of cacti and other succulents. It was first described in England but its origin is not clear. It is now found [...] found on many greenhouse-grown succulents around the world as it was probably distributed by the trade in ornamental plants. Damage symptoms The cactus mealybug [...] occasionally be found on crowns, roots. and flowers. Depending on the host plant species, infestations with cactus mealybug cause discoloration of the plants

May beetle

Although this subfamily contains a number of species which cause damage to crops, the most representative genus is the Phyllophaga . Given the external physical [...] larvae of this genus, they are usually treated as a single group, sharing similar habits and biology. The larval stages of these beetles are harmful to crops [...] feed on plant roots, resulting in visible water stress and ultimately ending in the death of the plant. From the third stage onwards, the impact of this

Blackcurrant aphid

Cryptomyzus galeopsidis , attacks black currant and also red current. It is widespread throughout Europe and also present in the Russian Far East and [...] America. Damage symptoms Blackcurrant aphids produce large amounts of sticky honeydew on which black sooty mould fungi grow. Leaves and fruit quickly turn [...] appearance of Blackcurrant aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses

Leafhoppers

Biological control of leafhoppers Leafhoppers are highly mobile, sap-sucking pests that feed on plant leaves, causing discoloration, stippling and leaf [...] growth and can lead to reduced yield and lower crop quality. In addition, leafhoppers can transmit plant pathogens, increasing the risk of disease spread within [...] field crops. Effective leafhopper control is therefore essential to maintain healthy and productive cultivation. By combining monitoring with targeted biological

Oak processionary moth

y moth ( Thaumetopoea processionea ), is a major pest of oak in many European countries. The common and scientific names of this moth refer to the behaviour [...] behaviour of the larvae to form long processions. The moth is native to central and southern Europe but is now present in almost all European countries and [...] and also in parts of the Middle East. Damage symptoms The nests of caterpillars on infested trees are clearly visible. The larvae of the oak processionary

Pine processionary moth

ea pityocampa), is a major pest of pine trees around the Mediterranean Sea. It is most conspicuously damaging on pine plantations, or amenity pines. Damage [...] nests of caterpillars on infested trees are clearly visible. Defoliation damage is extremely serious in young reforested areas where it may lead to death [...] death of trees, directly or as a consequence of attack by bark beetles or other wood-boring insects. In mature forests, trees are rarely killed but significant