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Volker, you have been a forum member since 2008 - you should already know better! Why don't you use the glossary https://diptera.i...mp;cat_id= and look for "dorsocentral setae" and "postsutural"? This one is also great: http://www.tachin...nition.htm. Your last picture shows that you really have to deal with the terms - that's your task ;), the experts do not have time to teach you.
Then, you got already 2 alternatives: E. cristata and E. bohemani. The first thing I do in such cases is to go into the forum search and look for all older threads that contain information about these species and compare the pictures. Especially in the old threads there is much more informative discussion of the characters. You can learn an enormous lot - get active!
And, by the way, I see 3 postsutural dorsocentrals, so I'd go for E. cristata, too :D.
Best wishes, Sundew