Yes SH, probably it is Naucleopis glaba, or Naucleopis Caloneura, it was good to know where it was collected, I already had contact with 4 species of Naucleopis, visually reminds me more N.Glaba, they are very good fruits, sweet, trees Large and latex, in the region they call Jaca do Mato, Muiratinga or Pamá.
I have fresh seeds at the time of Naoneopolis Caloneura and another species that I do not know which is for sure. Probably Naucleopis Jamariensis, which is endemic to a small region in northern Brazil, but we are still studying the correct ID. In 2014 I brought seeds of the four species of Manaus, but the seedlings are very fragile and die with the beginning of winter.
I am with these two planted again and waiting for germination.
I think that may belong to Moraceae, may be a Naucleopsis sp.