A hybrid between Salix triandra and S. xanthicola, occurring in the Rhodope Mountains northeastern Greece, is described as a new nothospecies. It differs from by having distinctly hairy young stems more deeply serrate-dentate leaf margins, xanthicola smooth, unstructured (without conicoids) wax layer on lower side of leaves presence subsessile glands petioles.

Environmental filtering is an important community assembly process influencing species distributions. Contrasting species abundance patterns along environmental gradients are commonly used to provide evidence for environmental filtering. However, the same abundance patterns may result from alternative or concurrent assembly processes. Experimental tests are an important means to decipher whethe...

BACKGROUND The small ermine moth genus Yponomeuta (Lepidoptera, Yponomeutidae) contains 76 species that are specialist feeders on hosts from Celastraceae, Rosaceae, Salicaceae, and several other plant families. The genus is a model for studies in the evolution of phytophagous insects and their host-plant associations. Here, we reconstruct the phylogeny to provide a solid framework for these stu...