M. troglomorpha sp. n., (7 mm ♀), scanning electron micrographs. A gnathopod I propodus; B, gnathopod I palmar corner C gnathopod I propodus posteromedial part D gnathopod I propodus anterodistal seta group E gnathopod I propodus anterior margin seta group F ventrally produced conspicous lobe on gnathopod I merus. Abbreviations: gp1-p = gnathopod I propodus, gp2-p = gnathopod II propodus (A); nst = notched spine teeth (B); pub-s = pubescent setae, h-s = helical medial seta (C); pl-s = plumose seta, s-s = simple seta (D); pl-s = plumose seta (E); cl = conspicous lobe (F).