---

hi!
last weekend i found this fly on top of the Boubín-mountain at the bohemian forest in czech republik.

it fly arount a viewing tower on top of the mountain and was obviously hill-topping.
my search through the forum showed me resemblance with Cephenemyia stimularor, but i couldn´t find out, if other species of the genus look similar. is my guess right? how can the other species be distinguished?

thank you!
regards, kurt