Pest
Allium leafminer
Phytomyza gymnostoma LoewAllium leafminer, Phytomyza gymnostoma, is an invasive fly that attacks onions, leeks, garlic, shallots, scallions and chives. Females puncture leaves for feeding and egg-laying,…
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Plant problem library
Detailed profiles of common plant diseases, pests, nutrient deficiencies and environmental problems.
Pest
Turnip flea beetle
Phyllotreta nemorum (Linnaeus, 1758)The turnip flea beetle, Phyllotreta nemorum, is a small, jumping leaf beetle that feeds mainly on Brassicaceae. Adults make numerous pinholes and shot-hole lesions…
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Pest
Turnip Flea Beetle
Phyllotreta atra (Fabricius, 1775)The turnip flea beetle, Phyllotreta atra, is a small, shiny black flea beetle that feeds mainly on cruciferous plants. Adults chew numerous pinprick “shot…
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Pest
Spotted Tentiform Leafminer
Phyllonorycter blancardellaThe spotted tentiform leafminer, Phyllonorycter blancardella, is a small moth whose larvae tunnel inside apple leaves and create raised, oval, spotted mines. Light infestations…
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Pest
Rose bud mite
Phyllocoptes fructiphilus KeiferThe rose bud mite, Phyllocoptes fructiphilus, is a microscopic eriophyid mite associated mainly with roses in the United States. Its greatest importance is as…
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Pest
Cotton mealybug
Phenacoccus solenopsis TinsleyCotton mealybug, Phenacoccus solenopsis, is a phloem-feeding scale insect native to North America and now established in many warm regions, including parts of the…
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Pest
Lettuce Root Aphid
Pemphigus bursariusLettuce root aphid, Pemphigus bursarius, is a host-alternating aphid that spends part of its life in swollen galls on poplar leaf stalks and part…
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Pest
South American palm borer
Paysandisia archon (Burmeister)South American palm borer (Paysandisia archon) is a large day-flying moth whose larvae spend most of their development concealed inside palms. They tunnel through…
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Pest
Dracaena Thrips
Parthenothrips dracaenaeDracaena thrips, Parthenothrips dracaenae, is a foliage-feeding thrips that mainly damages indoor and greenhouse ornamentals with firm leaves. Adults and larvae scrape and suck…
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Pest
European Fruit Lecanium Scale
Parthenolecanium corniEuropean fruit lecanium scale, Parthenolecanium corni, is a soft-bodied sap-feeding insect found on many deciduous fruit trees, grapevines and woody ornamentals in the United…
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Pest
European red mite
Panonychus ulmiEuropean red mite, Panonychus ulmi, is a tiny spider mite that damages apple, pear and stone-fruit foliage by removing cell contents. Feeding first produces…
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