Aphids
aphids have two pairs of wings, one of which is much larger than the other. For a large part of the season an aphid population consists of viviparous females [...] reproduction is asexual, the progeny of a single female is genetically identical to the mother. In other words, they are clones. Because there is no genetic [...] Effective aphid control is essential for maintaining healthy, productive crops. Biological control of aphids uses a combination of natural enemies that attack