Pest
Pear psylla
Cacopsylla pyriPear psylla, Cacopsylla pyri, is a sap-feeding jumping plant louse associated primarily with European pear, Pyrus communis. Nymphs and adults cluster on tender shoots,…
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Plant problem library
Detailed profiles of common plant diseases, pests, nutrient deficiencies and environmental problems.
Pest
Summer apple psyllid
Cacopsylla picta (Förster)Cacopsylla picta is a small, sap-feeding psyllid associated mainly with apple trees in Europe. Direct feeding injury is usually minor, but the insect is…
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Pest
Clover mite
Bryobia praetiosaClover mite, Bryobia praetiosa, is a tiny reddish-brown plant-feeding mite most often associated with cool-season turfgrass, clover and weeds in the United States. Feeding…
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Pest
Káposzta-levéltetű
Brevicoryne brassicaeA Brevicoryne brassicae, vagyis a káposzta-levéltetű, a káposztafélék viaszos, szürkészöld levéltetve. Tömeges kolóniái főként a fiatal leveleken, hajtáscsúcsokon, virágrügyeken és a fejképző részek mélyén…
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Pest
Sweetpotato whitefly
Bemisia tabaci species complexSweetpotato whitefly, Bemisia tabaci, is a small sap-feeding pest complex that attacks vegetables, field crops, ornamentals and weeds throughout warm regions of the United…
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Pest
Potato/tomato psyllid
Bactericera cockerelliThe potato/tomato psyllid, Bactericera cockerelli, is a tiny, mobile sap-feeding insect that attacks potatoes, tomatoes, peppers, eggplants and related plants in the United States.…
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Pest
Silver Y moth
Autographa gammaThe silver Y moth, Autographa gamma, is a migratory, highly polyphagous noctuid whose caterpillars chew vegetable, field-crop and ornamental foliage. Heavy infestations can skeletonize…
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Pest
Spanish Slug
Arion vulgaris Moquin-Tandon, 1855The Spanish slug, Arion vulgaris, is a large, highly polyphagous terrestrial slug that can severely damage vegetable seedlings, leafy crops, strawberries, ornamentals and emerging…
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Pest
Large rose sawfly
Arge rosae (taxonomic name variably treated; often associated with Arge ochropus, while Arge pagana is also called large rose sawfly in some references)Arge rosae is a taxonomic name associated in reference databases with rose-feeding sawflies, especially the large rose sawfly complex now treated under Arge ochropus…
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Pest
Green Apple Aphid
Aphis pomiThe green apple aphid, Aphis pomi, is a sap-feeding pest of apple and related plants in the rose family. Colonies gather on tender shoot…
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Pest
Melon aphid (cotton aphid)
Aphis gossypii GloverMelon aphid, also called cotton aphid, is a small, highly variable aphid that colonizes tender shoots and leaf undersides of cucurbits, cotton, citrus, okra,…
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Pest
Black Bean Aphid
Aphis fabaeThe black bean aphid (Aphis fabae) is a small, soft-bodied sap-feeding insect that can form dense colonies on beans, beets, celery, potatoes, flowers and…
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