Iphitrachelus africanus n.sp., Leptacis mitratus n.sp., Holocoelia debaucheella n.gen. et sp., and the previously unknown male of Leptacis aranea Masn. are described. A key of the four known species of Iphitrachelus is presented. The genus Miramblyaspis Dodd is regarded as a new synonym of Leptacis Först. and the type-species L. mirabilis (Dodd) n. comb. is redescribed.