Machadocepheus leoneae sp. n., adult female. SEM observations. 13 bothridium and sensillus, lateral view (1) 14 posterior zone of notogastral anterior depression (2) 15 promontories with and without cerotegumental layer (2) 16 lamellae anterior zone, lateral view (2) 17 promontories with dorso-central setae (1) 18 lateral promontories with lm, lp, setae (1). Abbreviations: see “Material and methods”. Scale bar: 13–14 = 20 μm; 15–16 = 10 μm; 17–18 = 30 μm.