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I still stick to A. grandicornis. ;) If you look closely, there are short hairs in the anterior edge of the cheeks, quite typical for Admontia. Some females in my collection have quite few hairs anyways. According to the central European key, the arista is thickened at most to 2/3. So it fits. Darkened wings are also typical. Fairly common species in malaise material here in late summer - early autumn.

This is btw, one of the few tachinids that can be found in thick forest. My only net catch is from a path through a spruce forest.

If you have time Jari, take a closeup photo of the cheeks. The image is quite dark, if you can add up the light, it will help seeing the hairs.

Istocheta have wider face and the flight time doesn't fit.

ID'ing tachinids from photos is an interesting exercise, anyways. Most species are so much easier once you have them under the scope. B)

All the best,

Jaakko