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Well, Juergen, you have a forum of your own and more that 9,500 posts in this one - so you should not stress your "nonprofessionalism" too much! Now we have 3,600 forum members - what do you think, how many "real dipterists" are among them? I am a botanist but learned a lot in the last 10 years. Likewise you have meanwhile gathered a lot of experience that also allows to read keys. Without looking into keys one cannot know the important characters that differ from fly to fly and can neither focus the camera on them nor decide which picture is worth posting. Meanwhile I gathered keys for many insect families (at the moment I deal with Limoniidae) and compile also information from the "Forum Search". I do not want to bother the handful of true experts too much, and it makes me proud to find out many names myself (especially in my beloved barklice). Try it - it is most satisfying!