unknown on Achillea grandifolia

Achillea grandifolia, Montenegro, Biogradska National Park, 21.vii.2019 ©
Cor Zonneveld

other specimens

parasite

Slender, upper-surface gallery mines. Frass in long, hair-thin strings at one side of the gallery. Causer an Agromyzidae species.

host plants

Asteraceae

Achillea grandifolia.