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Myzus persicae, known as the green peach aphid, greenfly, or the peach-potato aphid, [2] is a small green aphid belonging to the order Hemiptera. It is the most significant aphid pest of peach trees, causing decreased growth, shrivelling of the leaves and the death of various tissues.
Although aphids cannot fly for most of their life cycle, they can escape predators and accidental ingestion by herbivores by dropping off the plant onto the ground. [103] Others species use the soil as a permanent protection, feeding on the vascular systems of roots and remaining underground all their lives.
Lipaphis erysimi is a species of aphid of the family Aphididae. [3] Its common names include mustard aphid [4] and turnip aphid. [5] It is found in most temperate and tropical areas of the world and feeds only on cruciferous plants. The insects are almost exclusively female and are very prolific, with wingless females producing around one ...
Paracletus cimiciformis is a species of aphid with a complex life cycle. Its primary host plant is Pistacia and its secondary host is a grass, where it is present on the roots. Here it is associated with an ant and part of its life cycle is spent in the ant's nest.
Winged aphids can then colonize other host plants. Pea aphids also show hereditary body color variations of green or red/pink. The green morphs are generally more frequent in natural populations. [8] Acyrthosiphon pisum is a rather large aphid whose body can reach 4 millimetres (5 ⁄ 32 in) in adults. [8]
The larva takes ten to twelve days to develop before pupating inside the body of its host. When ready to emerge, the adult chews its way out through the upper surface of the aphid, leaving a neat round hole. The whole life cycle takes 20 to 25 days and there may be six or seven generations during the season.
In a study on tomatoes, it was shown that the aphids preferred smooth to hairy leaves and that susceptible tomato plants had higher sucrose, lower quinic acid and higher alanine and tyrosine levels. [10] In lettuce, butterhead varieties are mostly moderately to highly resistant to the aphid whereas crisphead varieties are susceptible. [11]
Aphis craccivora, variously known as the cowpea aphid, groundnut aphid or black legume aphid, is a true bug in the family Aphididae. [2] Originally of probable Palearctic origin, it is now an invasive species of cosmopolitan distribution .