Aphids
they can be found in a variety of habitats throughout the world. Aphids form a single, very large group of insects: the super- family Aphidoidea, belonging [...] order Hemiptera . The aphids discussed here all belong to the family Aphididae, a family containing many species that cause damage in cultivated crops [...] aphids are known as apterous, and winged adults as alate. Alate aphids have two pairs of wings, one of which is much larger than the other. For a large part