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Hi Robert & Jürgen
"markings do not reach edges of tergites" does not hold up when examining Dutch material of early spring Eupeodes. These blacker than normal specimens belong to Eupeodes corollae. There are lots, certainly last years, specimens of a winter generation. They lack the typical chromatic distinctive features of E. corollae. A recent example is this female: https://waarnemin...443544.jpg
There are very few sighting of E. luniger this early in the year in the Netherlands.
Kind regards,
Ectemnius