INSECTS of...Hardwood Foliage

Common Name:	LEAFMINERS Magnolia leaf damaged by a weevil or snout beetle LEAFMINER.
Species	Moths Beetles Flies
Common Hosts	Hardwoods Softwoods
Importance	Leafminers are common on shade trees. Sudden population increases do occur on individual trees or small groups of trees. Several consecutive years of severe infestation may unduly stress a tree. Death is uncommon unless other stress factors become apparent.
Signs of Infestation	Leaves with blotches, mines, or deformity of shape. Small, usually flattened, larvae of various shapes, sizes and color between the upper and bottom leaf layers. Hold a suspected leaf up to the light to see small (3-10 mm long) larvae through semi-transparent damaged areas.
Control	Promote tree health and vigor. Rake fallen leaves and burn to destroy insects that may be present. Use an approved insecticide for high-value trees or especially damaging leafminer populations.

Bulletin No. 196-A | Printed October, 1983 | Contact the Forest Health Section

LEAFMINERS