Description of Heleniella assiana sp. n. from the upper basin of the River Assi in Lebanon (Diptera, Chironomidae)https://ephemera.insectes.org/publication/description-of-heleniella-assiana-sp-n-from-the-upper-basin-of-the-river-assi-in-lebanon-diptera-chironomidae/ ephemera biodiversité insectes aquatique entomologie ephemera biodiversité insectes aquatique entomologie