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Stigmella confusella

Leaf miner Stigmella confusella

Description

Small moth from the family Nepticulida. Adults lay eggs on the lower surface of the leaf, positioned near a vein. The larval tunnel, known as a mine, is elongated and slender, showing minimal widening. The excrement (frass) is found in a continuous, extremely narrow central line within the mine. The corridor follows the leaf\'s veins for considerable distances, creating an angular pattern as a result.

Symptom

Narrow mine on the leaf with excrement (frass) found in a continuous, extremely narrow central line within the mine.

Tree Species: Birch

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Insects

Present in EU: Yes