The damage caused by feeding from the leaf mesophyll consists of chlorotic spotting followed by yellowing, distortion, and premature leaf drop (Charles, 1996). The damage first occurs in the lower and central areas of the plant, then spreads to the rest (Burnip et al., 1999). Seedlings may lose all their leaves, with a consequent reduction in vigor. They do not feed on the fruit; however, they deposit excrement that is difficult to remove and affects commercial quality (Charles, 1996).
Regarding natural enemies, Anagrus sp. (Hymenoptera Mymaridae) was recorded parasitizing eggs (González, 1989; Prado, 1991; Artigas, 1994; Legner, 2000; Charlín, 2003) and Aphelopus typhlocybae Muesebeck (Hymenoptera, Dryinidae) parasites adults (Dumbleton, 1937).

From the 1940s onwards, this species has been mentioned as causing damage in fruit-growing areas of Argentina (Christensen, 1940; Torres, 1946), particularly to plantations of apple trees (Pyrus malus L.), plum trees (Prunus domestica L.), pear trees (Pyrus communis L.) and elm trees (Ulmus L.).