Lychees
Indian mangoes (especially Alphonso and Langda varieties)
Black cherries
Watermelon
Physalis (again, the Indian varieties)
Guavas (sorry to be a broken record, but Indian rather than South American varieties)
Sankh aloo (that's the Hindi name - I don't know what it's called in English, I'm afraid, but Google tells me it's like jicama which is popular in Mexico)