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Hi all, and especially Theo, of course!

I'm struggling here with bimaculata and arpadi... The key tells me, if unsure with the palps, look at the hind margins of the tergites. If noticeable pale, it's arpadi. They are, I think, but I'm still in doubt. Also the mostly orange antenna seems to give me a hint towards arpadi. Orange hair at the abdomen... for bimaculata ok, I think, the black ones of apadi are missing. So what is ist now?

About 15 mm.

30.6.2023, Germany, Upper Bavaria, Inzell, at the window in a bathroom, about 700 m a.s.l., coordinates about 47.76373, 12.75745