Signs of damage appear from late May to early September.
• As capsid bugs feed, they damage and kill some of the cells where the mouthparts have probed
• The leaves near the shoot tips develop many small, brown-edged holes and may be misshapen
• Affected flower buds, particularly those of fuchsia, may fail to develop, or, in the case of chrysanthemum, dahlia and other daisy-like flowers, open unevenly
• Apple capsid (Plesiocoris rugicollis) damages the foliage and also feeds on the young fruitlets, which results in bumps or raised corky growths developing on the mature fruit. These blemishes are superficial and do not affect the eating and keeping qualities of the fruits. Apple capsid can also affect pear.