Hydrellia nigricans (Stenhammer, 1844)
Verty fine gallery that spirals around the base of the leaf; the part of the leaf above turns yellow or red. The larva can kae several mines. Pupation within the mine.
Juncus articulatus, bufonius.
Larvae in June.
Not known from the Benelux countries (Fauna Europaea, 2011).
distribution within Europe
From Sweden to Italy, and from Spain to Romania (Fauna Europaea, 2011).