We (my Indonesian student Sheherazade and I) have a Pteropus-durian pollinator/seed dispersal study going on out in Sulawesi right now and part of that study requires capture of other co-occurring fruit bats. She got this feisty female yesterday, on a very small island that does not have any fruiting trees, so we suspect that she roosts here.
We are calling this a Nyctimene cephalotes for now, but the yellowish eye rings are an interesting morphological trait. The species is recognized to have a rathe wide distribution, so taxonomic questions are not surprising given the lack of study into this group thus far.