Pest
Onion thrips
Thrips tabaci LindemanOnion thrips, Thrips tabaci, are tiny, highly mobile insects that rasp and suck plant cells from leaves, especially inside onion leaf folds and near…
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Plant problem library
Detailed profiles of common plant diseases, pests, nutrient deficiencies and environmental problems.
Pest
Melon thrips
Thrips palmi KarnyMelon thrips (Thrips palmi) is a very small, warm-weather insect pest that feeds mainly on young leaves, flowers and developing fruit. It is especially…
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Pest
Oak processionary moth
Thaumetopoea processioneaOak processionary moth (Thaumetopoea processionea) is a serious regulated pest of oak trees. Gregarious caterpillars feed on oak foliage, form nose-to-tail processions and build…
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Pest
Pine processionary moth
Thaumetopoea pityocampaPine processionary moth, Thaumetopoea pityocampa, is a quarantine pest of concern to U.S. plant health because its gregarious caterpillars feed on pine needles and…
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Pest
Two-spotted spider mite
Tetranychus urticaeThe two-spotted spider mite, Tetranychus urticae, is a minute arachnid pest of vegetables, fruits, ornamentals and greenhouse crops. It punctures leaf cells and removes…
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Pest
Tomato red spider mite (Tetranychus evansi)
Tetranychus evansi Baker & PritchardThe tomato red spider mite, Tetranychus evansi, is a tiny sap-feeding pest most strongly associated with tomato and other solanaceous crops. It causes pale…
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Pest
Egyptian Cotton Leafworm
Spodoptera littoralisThe Egyptian cotton leafworm, Spodoptera littoralis, is a highly polyphagous caterpillar pest of cotton, vegetables, field crops and ornamentals in Africa, the Middle East…
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Pest
Beet Armyworm
Spodoptera exigua (Hübner)Beet armyworm is a highly polyphagous caterpillar pest that feeds on vegetables, field crops, ornamentals and weeds across much of the United States. Young…
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Pest
English Grain Aphid
Sitobion avenae (Fabricius)The English grain aphid, Sitobion avenae, is a phloem-feeding pest of wheat and other small grains. Colonies may develop on leaves, stems, and especially…
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Pest
Mediterranean corn stalk borer
Sesamia nonagrioides LefèbvreThe Mediterranean corn stalk borer, Sesamia nonagrioides, is a noctuid moth whose larvae tunnel inside maize stems and can also develop on selected sorghum…
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Pest
Shothole Borer
Scolytus rugulosusThe shothole borer, also called the fruit-tree bark beetle, is a tiny bark beetle that tunnels beneath the bark of weakened or dying fruit…
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Pest
Chilli thrips
Scirtothrips dorsalis HoodChilli thrips (Scirtothrips dorsalis) is a tiny, invasive, highly polyphagous pest that attacks young leaves, shoots, flowers and developing fruit. Feeding causes bronzing, darkening,…
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