Aphids
Aphids feed on the sap of plants, which can cause the leaves to turn yellow or become distorted. The damage is often more pronounced on the younger leaves [...] throughout the world. Aphids form a single, very large group of insects: the super- family Aphidoidea, belonging to the order Hemiptera . The aphids discussed [...] larger than the other. For a large part of the season an aphid population consists of viviparous females. As reproduction is asexual, the progeny of a