Molecular phylogenetic study of the genus Isopaches with description of a new species from South America

This is the first molecular phylogenetic study of the genus Isopaches based on a large set of specimens from numerous remote regions of Eurasia and North America.Along with three previously known species, it includes a new species from South America -I.valdiviensis.The latter is formally diagnosed, illustrated, and compared to similar taxa, including another southern hemisphere species, I. pumicicola.We have shown that the genus Isopaches is a group of closely related and slightly divergent taxa and revealed a possible hybrid relation between I. bicrenatus and I. alboviridis.The main morphological differences of the species including sex allocation, leaf width/length ratio, shape of gemmae etc., are discussed.Overlap in some of these characters in different species is shown.A key to all species of the genus is provided. - Isopaches, . , , -I.valdiviensis. , , I. pumicicola., Isopaches , I. bicrenatus I. alboviridis. , ,