Female bursa copulatrix and associated reproductive structures, M. robustus group species, ventral view (for abbreviations see Table 2, p. 23). A M. cymindulus (Kīpahulu, 1950 m) B M. robustus (Waikamoi, 1310 m) C M. haydeni (Kīpahulu, 1500 m). Scale bar = 0.50 mm.