I found pics of the praemorsa in Orchidwiz also and they are very similar. And it does say habitat is India and Asia whereas the pachyglossa does seem to only be native to Africa. Both are very similar looking so it could be praemorsa. I do think it looks a bit closer to the pachyglossa, but being so similar to begin with it is hard to tell.
I read in OrchidWiz that pachyglossa is 3/8 inch at the largest and praemorsa is 1/2 inch at the largest. Maybe that will help confirm?? Can't see why someone in India would be planting one from Africa when a very similar one grows native there but who knows! Enjoy it, whichever it is!