Longidorus cheni sp. n. Juveniles: A–C Anterior region of first-, second- and third-stage E–G Posterior end of first-, second- and third-stage I–K Habitus of first-, second- and third-stage juvenile N developing gonad in a second stage juvenile. Female: D Anterior end H Tail L Habitus O Pharyngeal bulb region P Cardia Male: M Habitus Q Ventromedian supplements. Scale-bars: 60 μm (A–H); 100 µm (I–M); 15 µm (N–Q).