They do not overwinter outdoors. They are cone-shaped and stand on end and hatch in a 2 days. After a few days these nymphs will shed their legs, become rounder and thicker and look like Scale Insects. These will molt several times. Wings covered with waxy powder.
Females have legs.
Complete development requires 3 - 4 weeks. Tomatoes, Camellia, Coleus, Fuchsia, Hibiscus, Hollyhock, Impatiens, Jerusalem Cherry, Poinsettias and many others. They love Catnip. Sticky, yellow boards will trap the adults. Avoid using a lot of nitrogen fertilizer as succulent growth will increase whitefly populations.