Twolined chestnut borer
- Leaves in upper canopy look wilted, turn brown but remain attached to branch for several weeks
- 1/8 inch D-shaped exit holes
- S-shaped galleries underneath bark
- Bluish black bodies with two light stripes running down the wing covers
- Larvae are approx. 1 inch long and white with 2 spines at abdomen tip
- Damage visible mid to late summer
- More information on Twolined chestnut borer...