#2
If you prefer to identify Sarcophaga yourself, then you can check some literature at:
http://www.zmuc.dk/entoweb/sarcoweb/sarcweb/Sarc_web.htm
and select Flesh fly bibliography.
There are a few publications about Sarcophagidae from Philippines.
Otherwise you may send specimens for identification to Thomas Pape or to me.
Good luck.
Liekele