Twolined chestnut borer
- Leaves in upper canopy turn brown and dead branches are present
- Damage visible mid to late summer
- S-shaped galleries beneath bark
- 1/8 inch D-shaped exit holes may be visible
- Adult has bluish black body with two light stripes running down the wing covers
- Larvae are approx. 1 inch long and white with 2 spines at the abdomen tip
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