About Aulagromyza cornigera (Griffiths, 1973)
This species, Aulagromyza cornigera, has larvae that create white or greenish-white linear mines on the upper surface of leaves, with alternating black lumps of frass within the mines. It is univoltine, meaning it produces one generation per year. Larvae can be found from as early as late March to as late as early June. This species is native to Europe. In Europe, it occurs as far north as Norway and as far east as the Volga District of Russia. It has also been recorded in the United States and southern Canada.
