6 to7 mm. An orange fly with black patterning on the wings. The larvae mine the leaves of Colt’s-foot and Butterbur making upper surface blotches. When two or more larvae mine the same leaf the affected area can be quite large.
Areas where Colt’s-foot or Butterbur occur.
The mines may be encountered in early autumn.
Widespread in Britain.
Status in Leicestershire and Rutland not known.
Leicestershire & Rutland Map
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