Spidermites

Spider mite larvae, nymphs and adults are known to feed on the underside of plant leaves and cause yellow spots. They spin protective webs, and they can cause damage by puncturing the plant cells to feed. Spider mites are known to feed on several hundred species of plants. Yellow spots Present on upper surface of leaves, indicates the presence of spider mites. This leads to decreased plant growth and production and in certain instances death of the crops. If large numbers of spider mites are present, plants may become engulfed with webs. Vegetable crops—such as squash, melons, and watermelons—loss of leaves can have a significant impact on yield. On crops such as sugar peas and beans, where pods are attacked, spider mites can cause direct damage and loss.

MANAGEMENT:
Broad-spectrum insecticide treatments for other pests frequently cause mite outbreaks, so it is better to avoid these pesticides as and when possible. Sprays of water, insecticidal oils, or soaps can be used for management at a lesser degree of infestation. The spread of mites over leaves need to be monitored before effective treatment.
BIOLOGICAL CONTROL:

Spider mites have many natural enemies. Some of the most important are the predatory mites, including the western predatorymite Galendromus (formerly Metaseiulus) occidentalis, and Phytoseiulus mite species. Important predators like six spotted thrips (Scolothrips sexmaculatus) the larvae and adults of the spider mite destroyer lady beetle, the larvae of certain flies including the cecidomyid Feltiella acarivora, and various general predators such as minute pirate bugs, bigeyed bugs, and lace­wing larvae are all known to destroy spidermites. Predators like Persimilis and Stethorus which have been the top pest controllers for these types of mites. These pests continue being effective on any kind of temperature and works properly beneath all ailments.