Search by damage key [→ Leaf damage, Mold, honeydew (clear sticky substance) on leaves, leaves sometimes curled] PictureScientific nameCommon nameDescription AphidsInsects vary in size from 2-4 mm. The color varies from green to black. Nymphs are without, adults with wings. They can vector several plant viruses. Leaves are curled and wrinkled, if infestation is severe plants may die. Aphis craccivoraCowpea aphidCowpea aphids are tiny insects with shiny black to dark brown bodies and brown to yellow legs. Plants become stunted and deformed when populations are high. They can vector diseases. Aphids are often associated with ants. - no photo available -Aphis gossypiiCotton aphidThey vector several viruses, e.g. cucumber mosaic virus, and watermelon virus. They range in color from yellow to very dark. The wingless female adults have pale legs and black tarsi. Bemisia sp.White flyLarvae are tine (0.2-0.7 mm) scale-like insects. Adults are yellow/white. Feeding causes chlorotic spots on leaves. - no photo available -MealybugsScale insects, have often a symbiotic relationship with ants. Adults have glossy white wax threads extend from the body. PictureScientific nameCommon nameDescription