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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.
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.
When temperatures become colder and day lengths shorter, sexual winged females and males appear. These mate, the females lay diapausing eggs and the life cycle starts again. [7] Pea aphids can complete their whole reproductive cycle without shifting host plant. [8] Inbreeding is avoided by the recognition of close kin. [9]
The black bean aphid has both sexual and asexual generations in its life cycle. It also alternates hosts at different times of year. The primary host plants are woody shrubs, and eggs are laid on these by winged females in the autumn. The adults then die and the eggs overwinter.
Many aphids are parthenogenetic during part of the life cycle, such that females can produce unfertilized eggs, which are clones of their mother. All such young are females , so 100% of the population at these times can produce more offspring. Many species of aphid are also viviparous: the young are born live rather than laid as eggs. These ...
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 ...
Rhopalosiphum rufiabdominale, the rice root aphid or red rice root aphid, is a sap-sucking insect pest with a wide host range and a global distribution. [2] As a member of the superfamily Aphidoidea, it is one of 16 species of the genus Rhopalosiphum. [3] Adults and nymphs are soft-bodied and usually dark green with brown, red, or yellow tones. [4]
H. hamamelidis have three generations per year, each with a different part in the life cycle. At the start of spring, females or stem mothers crawl to witch-hazel leaf buds. As the leaf grows, the aphid injects it with a substance, possibly an enzyme or hormone, that causes that the galls to form around her