Irochrotus montandoni Schouteden, 1903 (Fig. 6):

basal part of ASW 2.6 times longer than the basal part of CSW; apical part of ASW rounded; microtrichia of ASW located only in apical margin, slightly prominent, tile-like; microtrichia of CSW (about 20) almost uniform in size, setiform with sharp apices.