Left female gonocoxa, M. ducalis group species, ventral view. A M. insolitus (Waikamoi, 1305 m) B M. invisitatus (Opana, 1265 m) C M. ducalis (Olinda, 1210 m) D M. longidux (Ke‘anae, 1325 m) E M. brevidux (Kīpahulu, 2045 m).

 
 
  Part of: Liebherr JK (2015) The Mecyclothorax beetles (Coleoptera, Carabidae, Moriomorphini) of Haleakala-, Maui: Keystone of a hyperdiverse Hawaiian radiation. ZooKeys 544: 1-407. https://doi.org/10.3897/zookeys.544.6074