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Thanks Danny for the global confirmation.
When I look at the picture in full size, there is definitely a reddish brown colour to it. So I think you are right, it might be Choreades gilva or Andrenosoma albibarbe (although the second one seems less likely to me)
I'll stay with choerades for the time being and mark it with a big "if".
Thanks for the help ! :)

If anyone can contribute further, I'll be even happier ;)