M. troglomorpha sp. n., (7 mm ♀), scanning electron micrographs. A gnathopod I and II propodus B gnathopod II propodus dactylus and palm C gnathopod II propodus palm D gnathopod II propodus posterior margin E gnathopod II carpus F comb-like plumose seta on gnathopod II carpus. Abbreviations: gp1-p = gnathopod I propodus, gp2-p = gnathopod II propodus (A); dact = dactylus, n = nail, unst-t = unnotched spine teeth (B); pr-s = pearl row-like seta, unst-t = unnotched spine teeth (C); pl-s = plumose seta (D); carp = carpus, cl-s = comb-like plumose setae (E); cl-s = comb-like plumose seta (F).