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Make sure there isn't any symbols or 'blank spaces' in the title of the file. I guess that is the problem ;)

By the way, as far as I know, S. carnaria is rare (or at least uncommon) in Spain. But it is the widely known species and people tend to associate certain 'looks' with this species. The net is packed with very doubtful IDs of this species. And truly the only way to seriously ID Sarcophaga in by dissection of male genitalia.