The peach twig borer is widely distributed throughout California and is found on several hosts, but is rarely a problem in mature cherry orchards.
Small larvae are almost white with black heads.
The peach twig borer is a minor pest of cherry, but can damage both shoots and fruit. They also feed on fruit, primarily at the stem end. Either feeding damage or the presence of larvae will cause a fruit to be offgrade. The use of Bacillus thuringiensis at bloom, preceded by a dormant spray oil treatment for scale and mite eggs. Monitor before treating to assure that you have the pest and to properly time application.