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Insect Pests of Crop
Insect Pests of Crops Idaho AG 510H
Term | Definition |
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Insect | Small, boneless animal whose body is divided into three sections and has six legs |
Spider | A small, eight-legged animal having a body composed of two divisions (cephalothorax and abdomen); the spider is an arachnid, not an insect |
Mite | Any of a large number of tiny arachnids, many of which live as parasites upon plants |
Entomology | A branch of science that deals with the study of insects |
Life cycle | Stages in the life development of an insect |
Metamorphosis | A change in form, either gradual or sudden |
Complete metamorphosis | Having four distinct growth stages in development in which a major change in structure and appearance of the insect occurs; each feeding life stage may eat different diets and occupy different environments |
Incomplete metamorphosis | Gradual change in appearance as growth proceeds; the immature forms are called nymphs and eat the same as the adults |
Pupa | Stage between the larva and adult in insects with complete metamorphosis |
Larva | Immature form of an insect having complete metamorphosis |
Cocoon | A silken case inside which the pupa is formed |
Nymph | The immature stage of an insect with incomplete metamorphosis |
Damage | Associated with crop loss and/or reduction in crop yield or crop quality |
Injury | Deviation from normal appearance of the plant, from which it may recover and not depress yield and/or quality |
Pesticide | Chemical used to control pests |
Insecticide | A pesticide used to kill or control insects |
Acaricide | Pesticide used to kill or control mites, ticks and spiders |