Forgive me if this question is too trivial.
I have the gene IDs of the following type
EOG6STSR2 EOG60ZRJB EOG6SBFJ2 EOG6P5KX3 EOG6B5PRW
from the first supplementary file in Comparative validation of the D. melanogaster modENCODE transcriptome annotation .
I'm not sure as to the type of the IDs. I learned that IDs beginning with EOG are Eukaryotic Orthologous Group IDs but I couldn't find these particular ones in any of the databases.
Is it possible to map them to Ensembl IDs or any of the other commonly used ones?