In late summer or early fall, after another generation has been completed on mullein, the resultant adults will migrate back to fruit trees to lay overwintering eggs. Like the nymphs, the adults have prominent second antennal segments. Adults appear mid-summer, about 4 weeks after the nymphs. Adults do not damage fruit. On dark-skinned varieties like Red Delicious, minor blemishes may become less noticeable, and even disappear, as the fruit ripens.
Some varieties appear to be more susceptible than others, although any variety can be attacked.
Red Delicious, Golden Delicious, Northern Spy, and Spartan are reported to be among the more sensitive, whereas McIntosh seldom suffers damage. New growth, with a higher proportion of flower than leaf clusters, should be sampled by tapping 2 or 3 times. It is difficult to predict where and when mirid bugs may become a problem. Monitoring should begin in areas where damage has been noted previously. Last year's fruit wood may be excised and placed in water in a warm place, such as a greenhouse, to force eggs to hatch.