Although a single genus name, Phytomonas, has been proposed for all plant trypanosomes, they can differ from one another in terms of their ecological and biological properties, and of their effects. Phloem-restricted trypanosomatids (group H) are specifically associated with lethal diseases: Hartrot of coconut (Fig. 1), Marchitez Sorpresiva of oil palm (Fig. 2) and yellow wilt of Alpinia purpurata [1] They have been established as a homogeneous group, due to its specific features, as well as being confined to a single continent: Latin America and the Caribbean. On the other hand, in general, trypanosomatids located in the latex tubes of latex-bearing plants do not induce any defined pathology.