Lilac borer is an important pest of which tree species?

Lilac borer is an important pest of which tree species?

• A. Ash
• B. Elm
• C. Birch
• D. Oak

Answer: (A)

Lilac borer is a wood-boring moth whose larvae tunnel in the stems and trunks of deciduous trees. It is especially significant on ash trees in landscapes and nurseries because its bored feeding interrupts water and nutrient flow, weakening the tree and often causing dieback or structural damage. You’ll see signs like small exit holes in the bark and frass (sawdust-like material) pushed out of cracks where the larvae have tunneled. The life cycle involves eggs laid on the bark in late spring to early summer, with larvae feeding under the bark for an extended period before pupating. Because ash is a common urban host and the signs and damage are well-recognized on this species, lilac borer is regarded as an important pest of ash trees.

Lilac borer is a wood-boring moth whose larvae tunnel in the stems and trunks of deciduous trees. It is especially significant on ash trees in landscapes and nurseries because its bored feeding interrupts water and nutrient flow, weakening the tree and often causing dieback or structural damage. You’ll see signs like small exit holes in the bark and frass (sawdust-like material) pushed out of cracks where the larvae have tunneled. The life cycle involves eggs laid on the bark in late spring to early summer, with larvae feeding under the bark for an extended period before pupating. Because ash is a common urban host and the signs and damage are well-recognized on this species, lilac borer is regarded as an important pest of ash trees.