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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Plant problem library
Detailed profiles of common plant diseases, pests, nutrient deficiencies and environmental problems.
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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Pest
American Grapevine Leafhopper
Scaphoideus titanusThe American grapevine leafhopper, Scaphoideus titanus, is a specialized sap-feeding insect associated mainly with grapevines (Vitis). In the United States it is native and…
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Pest
Black scale
Saissetia oleaeBlack scale, Saissetia oleae, is a soft scale insect that weakens plants by sucking phloem sap and coating foliage with sticky honeydew. Dark, dome-shaped…
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Pest
Red Palm Weevil
Rhynchophorus ferrugineusThe red palm weevil, Rhynchophorus ferrugineus, is a highly destructive, quarantine-significant beetle whose larvae tunnel inside palm crowns and trunks. Infestations may remain hidden…
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Pest
Peach weevil
Rhynchites bacchusPeach weevil, Rhynchites bacchus, is a fruit-infesting snout beetle associated mainly with pome and stone fruits in Europe and parts of Asia. Adults feed…
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Pest
Bird Cherry-Oat Aphid
Rhopalosiphum padiThe bird cherry-oat aphid is a small, soft-bodied pest of cereal crops and other grasses. Colonies commonly develop on wheat, barley, oats, rye, triticale,…
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Pest
Walnut Husk Fly
Rhagoletis completa CressonWalnut husk fly, Rhagoletis completa, is a tephritid fruit-fly pest of walnuts in many parts of the United States, especially the West. Its larvae…
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Pest
European Cherry Fruit Fly
Rhagoletis cerasi (Linnaeus)European cherry fruit fly, Rhagoletis cerasi, is an invasive tephritid pest that attacks ripening cherries. Females insert eggs beneath the fruit skin, and the…
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Pest
Raspberry Cane Midge
Resseliella theobaldiRaspberry cane midge is a small gall midge whose larvae develop beneath split or wounded bark on raspberry canes. Feeding injuries weaken the cane…
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