University of Illinois Extension
University of Illinois Extension - Selecting Trees for Your Home
Dogwood Borer
Synanthedon scitula
Dogwood borer adult. P. Nixon.
Severity: 5 out of 5
Frequency: 3 out of 5
Symptoms: Dogwood borer adults are clearwing moths that look like a wasp. The larvae feed on the phloem tissue. As the larvae grow larger the eventually begin to feed on the sapwood.
Cycle: Adults can be present from July to September. The adult female borer lays its eggs on the bark and dies soon after. The larvae eat their way into the bark. The eggs are laid near injuries including pruning wounds.
Management: Avoid pruning during summer months.
Associated trees: