I study host preference of herbivorous arthropods and the host-plant traits which may affect it. In particular, I work with greenhouse plants and sucking arthropod assemblages (spider mites, thrips, whiteflies, scale insects, and aphids). Psyllids, cycadas, planthoppers, and Heteroptera are absent in my work. I read the article about stylet penetration by Bemisia (see in the attachment), and it would be nice to compare such data with those about another suckers. Especially interesting is to know which areas of plant surface herbivores choose to pierce, how they get to the needed tissue, and based on what they make a choice to feed or leave out.