Resseliella syringogenea (Hering, 1943)
Heracleum sphondylium, France, Normandy, Caen (from Hering, 1943b): mine in the stem rind
Several larve, one behind the other, in a narrow, loosely spiralled gallery in the rind of the stem, also in the thicker leaf veins and in the rachis of the leaf, sometimes with a short excursion into the lamina. The gallery runs sub-epidermally or a bit deeper. The tissue along the mine discolours orange red to reddish brown. On the stem the gallery often stretches over several internodes, down to the base of the stem. At the end of the mine, now and then also elsewhere, is a an opening. When the mine is in a leaf it mostly is under-surface, and often the part of the lamina above withers and turns brown. Larvae 3.5 mm, orange.
distribution within Europe
spatula (from de Meijere).
Seemingly never found again after its first discovery.
Gagné & Jaschhof (2014a), Hering (1943b), de Meijere (1947a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a).