Pest
Asian Citrus Psyllid
Diaphorina citri KuwayamaThe Asian citrus psyllid, Diaphorina citri, is a small sap-feeding insect that attacks tender citrus flush and closely related Rutaceae plants. Its direct feeding…
DetailsPLANT DOCTOR
Plant problem library
Detailed profiles of common plant diseases, pests, nutrient deficiencies and environmental problems.
Pest
Citrus whitefly
Dialeurodes citriCitrus whitefly, Dialeurodes citri, is a sap-feeding pest that primarily attacks citrus but may also colonize several ornamental and fruit trees. Nymphs live on…
Details
Pest
Western Corn Rootworm
Diabrotica virgifera virgifera LeConteWestern corn rootworm, Diabrotica virgifera virgifera, is a major insect pest of corn in the United States. Its larvae feed underground on corn roots,…
Details
Pest
Gray field slug
Deroceras reticulatumThe gray field slug, Deroceras reticulatum, is a shell-less mollusk and important pest of vegetable crops, strawberries, field crops, grasses, nurseries and seedlings in…
Details
Pest
Cabbage Maggot
Delia radicumCabbage maggot is the root-feeding larva of the small gray fly Delia radicum. It attacks young cabbage-family crops, especially during cool, wet spring weather.…
Details
Pest
Seedcorn maggot
Delia platuraSeedcorn maggot is the larval stage of the small gray fly Delia platura. The legless larvae feed below the soil surface on planted seeds,…
Details
Pest
Onion Maggot
Delia antiquaThe onion maggot, Delia antiqua, is a soil-dwelling fly pest of onions and other Allium crops. Its creamy-white larvae tunnel into seedlings, basal stems…
Details
Pest
Brassica pod midge
Dasineura brassicaeBrassica pod midge, Dasineura brassicae, is a small fly whose larvae develop inside pods of oilseed rape and related brassicas. Infested pods become yellow,…
Details
Disease
Cytospora Canker
Cytospora chrysospermaCytospora chrysosperma causes a serious canker and dieback disease of poplars, aspens, cottonwoods, and willows, especially when trees are weakened by drought, winter injury,…
Details
Pest
Codling moth
Cydia pomonellaCodling moth (Cydia pomonella) is a major internal fruit-feeding pest of apples, pears and English walnuts in the United States. Newly hatched caterpillars quickly…
Details
Pest
Box Tree Moth
Cydalima perspectalis (Walker)Box tree moth, Cydalima perspectalis, is an invasive caterpillar pest that primarily attacks boxwood (Buxus spp.). Larvae skeletonize and web leaves, produce green-black frass,…
Details
Disease
Bacterial Wilt of Dry Bean
Curtobacterium flaccumfaciens pv. flaccumfaciensBacterial wilt of dry bean is a seed-borne vascular disease caused by Curtobacterium flaccumfaciens pv. flaccumfaciens. It is most important in common bean production…
Details