Pardon me guys, as I am not a JG 53's expert. But taking into consideration set of data provided by Michael Holm (at
www.ww2.dk) the II./JG 53 had not participated at early stages of Barbarossa. At 13.06.41 it was rebased from Mannheim to small Feldflugplatz Neusiedel (currently Polish Karchów, Silesia). Twelve days later it (though without 6./JG 53, which was then relocated several times in Germany and Holland) was moved to "Lemonsky", which is our object of investigation, and just five days later returned to Silesia: Kreuzburg- Süd (pol.: Kluczbork). Or...perhaps it never left Silesia in period 13.06. - 05.07 1941? At early July 1941 it eventually seem to appear at Alt-Schwaneburg, or Gulbenes, Latvia
Wherever it could be, I belive "Lemonsky" is somewhere in Silesia. Such a name could be a an effect of mistaken reading of a handwritten text. Let me have look on it, and I hopefully will tell you where it is.