aphid

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Fig. 41 Aphid . Winged female.

aphid

any member of the family Aphididae, order Hemiptera, commonly called green fly. Aphids feed on plant juices by using piercing and sucking mouthparts and are of considerable economic importance because they can act as vectors of plant viruses. See Fig. 41 .

aphid

an insect of the order Hemiptera. They parasitize many plants during the warm seasons. Of interest in animal health are the black aphids, Aphis craccivora, which can exist in very large numbers on burr trefoil, Medicago polymorpha, and may stimulate the production of phytoallexins in the plant which then photosensitize animals grazing the infested pasture.
References in periodicals archive ?
You will find greenfly and blackfly - small, wingless insects - on the tips of shoots and buds and the undersides of leaves, both outdoors and in the greenhouse.
But Examiner gardening correspondent Graham Porter says an army of ladybirds is on its way to engulf the greenfly hoardes.
A huge thankyou to the management of Morrisons, Asda's , Sainsbury's but most of all to the management of our new headquarters, the Greenfly, Bedwas.
Infestations of aphids (both greenfly and blackfly) tend to be worse in warm weather as the tiny insects attack the plants, which can end up twisted and discoloured, while some buds may fail to open.
They were imported into the USA in 1988 to curb greenfly but went wildly out of control.
Given all that, Mr Brown may well find that when he finally gets the keys to Number 10, putting up with the greenfly is a more attractive option than getting the pruning scissors out after all.
One insect you should not ignore is the humble ladybird, one of the major natural predators of greenfly.
Pick greenfly off roses by hand or spray the plant every couple of weeks with soapy water.
Greenfly love the soft tips of honeysuckle and, if not caught in time, will stunt the plant and reduce flowering.
Stamp out greenfly and blackfly as soon as you see them.
Val spent much of her time with a jar searching North Shields parks for greenfly to feed the waiting mouths.
At the refurbished Greenfly in Caerphilly, Cardiff City fans who can't make the trip to Middlesbrough on Sunday, can enjoy the game on a range of large screen TVs as well as a large cinema screen in the events room.