Minthodes oramanatae Gilasian & Ziegler sp. nov. is described as new to science from western province of Kermanshah, Iran. This species is separated from other Minthodes species by its shiny black abdomen, narrow frons, long postpedicel, presence of basal scutellar marginal setae, short petiole of wing cell r4+5 and absence of marginal setae on abdominal tergite 2. Photographs of the male habitus and terminalia are given. The comparison of the morphological characters of M. oramanatae Gilasian & Ziegler sp. nov. with its closely related species M. atra (Kugler, 1971) and M. rossica (Mesnil, 1963) is provided. Photographs of the habitus and male terminalia of M. atra are presented for the first time. The identification key to the Iranian Minthodes species is provided.