Male of S. thungchangense sp. nov. A sensory vesicle (right side; anterior view) B hind basitarsus and second tarsomere (left side; lateral view) C coxites, styles and ventral plate (ventral view) D style (right side; ventrolateral view) E ventral plate and median sclerite (lateral view) F ventral plate (caudal view) G median sclerite (caudal view) H paramere and aedeagal membrane (right half; caudal view) I, J tenth abdominal segments and cerci (right side I lateral view J caudal view). Scale bars: 0.1 mm (B); 0.02 mm (A, C–J).