original description(ofUtahnema nigericum Jairajpuri, 1968)Jairajpuri, M. S. (1968). Studies on the genus Utahnema Thorne, 1939 (Nematoda: Dorylaimida). <em>Annales Épiphyties.</em> 19: 727-735.[details]
new combination referenceJairajpuri, M. S.; Ahmad, W. (1992). Dorylaimida: free-living, predaceous and plant-parasitic nematodes. <em>Brill.</em> 458 pgs., available online athttps://doi.org/10.1163/9789004630475[details]