Neoechinorhynchus (Neoechinorhynchus) longnucleatus n. sp. 24. Holotype male; anterior testis often much closer to lemnisci. 25. Bursa of holotype male. 26. Allotype female. 27. Egg. 28 Anterior end of paratype male. 29. Proboscis and receptacle of the same paratype male in Fig. 28 showing the apical structure, anterior trunk collar, dermal plaques (arrow), and the two types of nuclei of the cephalic ganglion. 30. Proboscis hooks of a paratype male. 31. The reproductive system of the allotype female showing the multiple uterine bell cells and the twisted anterior part of the vagina (arrow). Measurement bars: 24: 5 mm; 25, 31: 500 μm; 26: 4 mm; 27: 30 μm; 28: 1 mm; 29: 250 μm; 30: 50 μm.