ARTHROPOD PREDATORS AND INSECT PEST CONTROL Arthropod species occur from below the soil surface to the tree canopy. However, only a small fraction are observed on a frequent basis because many are microscopic or hidden below ground or plant tissue.  Very few species are classified as pest. Whether they feed on plants or plant produce invade our homes, inflict painful bites or stings. Infect most insects and other arthropods are beneficial and serve a variety of important functions in the garden. The abundance of beneficial insects especially predators is often limited in urban landscapes because these environments typically are characterized by disturbance. Disturbance factors include use of pesticides and other chemicals, air pollution and wind-borne dust, all of which may increase mortality of beneficial arthropods. Residential landscapes often lack adequate amounts of essential resources such as food, nesting sites and shelter than enhance reproduction and survival of natur...