This happens to my tree every year for the past 3 years. The ends of the branches swell up and then the new leaves come out curled and deformed. Nothing ever seem to hatch out of them. I broke one open and nothing appeared to be inside. It is an Erythrina variegata - Sunshine Tree. The tree grew very quickly the first year I planted it but has not seemed to grow at all since this started happening. Any ideas what it might be and what I should do about it? Thanks!