Carrot fly is a small insect that mainly attacks carrots.
It is the larvae of the insect that is responsible for the infestation and eats the outer layers of the carrot root. In the autumn, they may enter further into the carrot root extending the infestation.
Scientific name: Chamaepsila rosae
Other name: Rust Fly
Greek name: Μύγα Psila Rosae
The carrot foliage wilts and loses its colors. The holes made by the larvae are visible in the root of the carrot.
There are pesticides that treat the carrot fly. Contact your agronomist.
As a preventative measure, you can throw ashes from burnt wood around the carrots.