World Database of Nematodes

• Nygellus brachyuris Sukul, 1973
• Nygellus caudatus Jairajpuri, 1964 accepted as Clavicaudoides caudatus (Jairajpuri, 1964) Heyns, 1968
• Nygellus clavatus Thorne, 1939
• Nygellus clavicaudatus Altherr, 1953 accepted as Clavicaudoides clavicaudatus (Altherr, 1953) Heyns, 1968
• Nygellus mozammili Jairajpuri, 1965
• Nygellus shamimi Sen, 2015
• Nygellus subclavatus Timm & Ameen, 1960
• Nygellus symmetricus Williams, 1958 accepted as Clavicauda symmetricus (Williams, 1958) Heyns, 1968
• Nygellus zingli Dhanam, Jairajpuri & Sreedharan, 2003