Species of the genus Ecnomus (Trichoptera: Ecnomidae) from the People's Republic of China

Twenty-two species of the genus Ecnomus McLachlan (Ecnomidae: Trithoptera) from the People's Republic of China are described or re-described, among which eighteen species are new to science. One additional species is considered a nomen dubium. A phylogeny of these 22 species is inferred from the adult male characters, using PAUP. Four monophyletic species groups are recognized within the genus. A phylogeny of the genera in the whole family is also inferred with PAUP from information in all life stages. Ecnomus and Psychomyiellodes Mosely are sister lineages. Their sister Lineage ist (Austrotinones + Ecnomina) + Parecnomina) + Parecnomina resima. A new genus probably is needed for Parecnomina resima Morse.