The female varies from yellow to dark brown, and has a more rounded abdomen. The male is always pale yellow and has a narrower abdomen. Egg - Yellowish eggs cannot be seen because they are laid into the plant tissue. Larva - The larva develop through two instars and are distinctly yellow.
Second instars become whitish before molting.
Prepupa and Pupa - Both prepupa and pupa are yellowish, quiescent nonfeeding stages. The antennae and wing pads are typical for most thrips species. However, this thrips has become the most prevalent species attacking greenhouse flowers throughout the U.S. and Canada, and many countries in Europe and Asia. Host Plants - This thrips feeds on almost any flowering plant. Carnations, chrysanthemums, gerberas, geraniums, marigolds, pansies, peppers, tomatoes, and roses are the major host plants.