, a new species within clade 1c causing late blight on in Colombia.

Over the past few years, symptoms akin to late blight disease have been reported on a variety of crop plants in South America. Despite the economic importance of these crops, the causal agents of the diseases belonging to the genus have not been completely characterized. In this study, a new species was described in Colombia from tree tomato (), a semi-domesticated fruit grown in northern South America. Comprehensive phylogenetic, morphological, population genetic analyses, and infection assays to characterize this new species, were conducted. All data support the description of the new species, sp. nov. Phylogenetic analyses suggest that this new species belongs to clade 1c of the genus and is a close relative of the potato late blight pathogen, . Furthermore, it appeared as the sister group of the strains collected from wild (clonal lineage EC-2). Analyses of morphological and physiological characters as well as host specificity showed high support for the differentiation of these species. Based on these results, a complete description of the new species is provided and the species boundaries within clade 1c in northern South America are discussed.