Male aedeagus, M. robustus group species (for abbreviations see Table 2, p. 23). A–C M. aeneipennis A–B Right and ventral views (Polipoli, 1878 m) C Right view, sac everted (Polipoli, 1776 m) D M. affinis, right view (West Wailuanui, 1950 m) E–H M. cognatus (Honomanu, 1850 m) E Right view, sac everted F Left view, sac everted G Right view, sac inverted H Ventral view.

  Part of: Liebherr JK (2015) The Mecyclothorax beetles (Coleoptera, Carabidae, Moriomorphini) of Haleakala-, Maui: Keystone of a hyperdiverse Hawaiian radiation. ZooKeys 544: 1-407.