Description
Adult
Body is 4-5 mm long. Colour is a rich chestnut brown with white chevrons edged with black. Legs striped white with dark brown to black.
Larvae
Final instar are 3.5 mm long with a head capsule 0.5-0.66 mm wide. Body is distinctly constricted between segments. Mouthparts are large and shield shaped.
Eggs
White and 0.2-0.4 mm in diameter. Laid typically on the upper part of leaves near the veins.
Distribution
Throughout Europe and Turkey.
Economic Host(s)
Horse chestnut trees (Aesculus hippocastanum) and occasionally sycamore (Acer pseudoplatanus).
Symptoms/Signs
Larvae are leaf miners producing blotch mines across the leaf surface that become brown with age.
Generations:
Generations: 3