Tobacco aphid

tobacco aphid ( Myzus persicae subsp. nicotianae ) probably evolved from the peach potato aphid in the Far East and is a key pest of tobacco crops in both [...] America. The tobacco aphid ( Myzus persicae subsp. nicotianae ) is also encountered in a range of crops in greenhouses, such as sweet pepper, aubergine, chr [...] tobacco aphid tends to form denser colonies, closer to the top of the plant, than the peach potato aphid . It is not known to what extent tobacco aphids ( Myzus

Cotton aphid

The cotton aphid ( Aphis gossypii ) is an extremely polyphagous aphid found on more than 700 plant species. Crop plants attacked by this aphid include cotton [...] occurs early enough in the season, the death of young plants. Retarded growth and defoliation reduce yield. Plant sap is rich in sugars, but has a low [...] cocoa, eggplant, cucumber, melon, pepper and many ornamental plants such as chrysanthemum and kalanchoe. The cotton aphid ( Aphis gossypii ) is distributed

Oleander aphid

General The oleander aphid, Aphis nerii , sometimes also called the milkweed aphid, is a common pest of several important ornamental plants in the families A [...] stunted plant growth. Life cycle and appearance of Oleander aphid The oleander aphid is an obligate parthenogenetic species; thus the adult aphids are all [...] The oleander aphid is cosmopolitan, and can be found in tropical to warm temperate regions throughout the world. It probably originated in the Mediterranean

Potato aphid

occurs early enough in the season, the death of young plants. Retarded growth and defoliation reduce yield. Plant sap is rich in sugars, but has a low [...] potato aphid and is particularly visible in the nymphs. Immatures have a light dusting of whitish-grey wax. The aphids instantly fall off the plant when [...] the same time, photosynthesis in the leaves is reduced, affecting production. Life cycle and appearance of Potato aphid Aphids have a complex life cycle,

Shallot aphid

shallot aphid is cosmopolitan and widely spread in Europe. Damage symptoms Feeding of shallot aphid on strawberries invokes a strong host plant reaction [...] 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 [...] towards the apex. The shallot aphid does not alternate to another host plant for overwintering and there is no sexual stage in the life cycle. No eggs are

Strawberry aphid

appear in May and June; these aphids disperse to other plants and fields. Winged aphids appear again from October to December. [...] most serious pests affecting strawberry plants. Direct damage is caused by the aphids sucking sap from the plant, which reduces the yield and quality of [...] the honeydew the aphids excrete. Black sooty mould fungi grow on the honeydew. The strawberry aphid is an important vector of several plant viruses affecting

Geranium aphid

foliage, particularly along the petioles. In outdoor strawberries they reach their peak in June. Winged aphids are formed from May onwards and are responsible [...] pest of strawberry that is widely distributed in northern and western Europe. Damage symptoms Wingless aphids may form large colonies on young strawberry [...] strawberry plants. Acyrthosiphon malvae rogersii can spread strawberry mottle virus. Life cycle and appearance of Acyrthosiphon malvae rogersii Aphids have a

Blackcurrant aphid

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, re [...] swollen. In spring, the blackcurrant aphid lives on the underside of the young leaves of currant plants. It does not induce a gall on blackcurrant. In June [...] blackcurrant aphid, Cryptomyzus galeopsidis , attacks black currant and also red current. It is widespread throughout Europe and also present in the Russian

Rose aphid

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 [...] 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, re [...] siphunculi are black and bent outwards. The rose aphid usually overwinters on rose bushes in the egg stage, although in mild winter some adults may continue to

Blueberry aphid

appearance of Blueberry aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses, re [...] produce females. The aphids are mainly found on young shoots. Peak aphid densities are reached in June and July. Sexual adults are produced in September and October [...] symptoms Blueberry aphids live in dense colonies on young shoots of blueberry bushes and produce large amounts of sticky honeydew. The aphids spread blueberry