Genitalia of Devenilia corearia (Leech) including the male genitalia musculature are described for the first time. Strong morphological specializations found ii; male genitalia allow to separate the new tribe Deveniliini trib, n. This tribe includes the eastern- and southern Asia genera Devenilia Wehrli, Crypsometa Warren, Syngenitalia Guenee, Platycerota Hampson and Heterostegania Warren which have the following main characters of genitalia skeleton: tegumen is narrow, almost disjunctive dorsally; vinculum is broad, strong with hollows and/or plications; gnathos is band-like, thin, rudimentary or absent; valvae are long, narrow; cucullus is narrow; transtilla is without basal process, sacculi ale distant from each other, they do not come in contact; juxta is strong, wide basally in male genitalia and wide ostial funnel and short or lost antrum in female ones. The found tribe is suggested to be a sister one to the group of the tribes Nacophorini, Lithinini, Anagogini.