The status of H. eccentricus has been disputed. In 1998, it was suggested that it be regarded as a junior synonym of H. occidualis, but this was rejected in 1999.
Species
The following species are accepted within Halipegus:
↑Zelmer, D. A.; Esch, G. W. (February 1999). "Reevaluation of the taxonomic status of Halipegus occidualis Stafford, 1905 (Digenea: Hemiuridae)". The Journal of Parasitology. 85 (1): 157–160. ISSN0022-3395. PMID10207388.