Not true, your English is fine... I am sorry though I don't even try to write in German.
Thanks for the answer Rolf, although now i still don't know what the 4 postdiscal spots are...
as they are mentioned here http://www.butterflycircle.com/showthread.php?15110-ID-Help-Request!!&styleid=6
I'm aware of the other Neptis-species but sappho & hylas are the difficult pair as the bonelike bar is similar.