Insects have a protective outer exoskeleton. Insects can be divided into two groups, those with a complete metamorphosis, and those with a gradual metamorphosis. The two types of life cycles are diagrammed here . Examples Aphids Grasshoppers Stinkbugs Leaf hoppers Mites are very small relatives of the spiders. Most are so small that they are difficult to see, but some are larger in size.
Mites typically have two body segments, four pairs of legs and an exoskeleton.
Insects and mites may be divided into two categories depending on the way that they feed on the plant. Identifying the pest is the first step in control. Many books have excellent color plates of insect pests to help in identification. There are also some excellent sites on the World Wide Web. In addition to garden books, county agents, horticulturists at local garden centers, and consultants are all important in diagnosing and making recommendations for control.