Hysterothylacium is a genus of parasitic roundworms in the family Raphidascarididae. As of 2020 it consists of over 70 species[1][2][3][4][5][6] and is considered one of the largest of the ascaridoid genera parasitising fish.
^Li, Liang; An, Ruiyong; Zhang, Luping (15 October 2007). "A new species of Hysterothylacium (Nematoda: Anisakidae) from marine fishes from Yellow Sea, China, with a key to the species of the genus Hysterothylacium". Zootaxa. 1614 (1): 43–52. doi:10.11646/zootaxa.1614.1.4. ISSN1175-5334.
^Shamsi, S. (19 September 2016). "Morphometric and molecular descriptions of three new species of Hysterothylacium (Nematoda: Raphidascarididae) from Australian marine fish". Journal of Helminthology. 91 (5): 613–624. doi:10.1017/S0022149X16000596. PMID27642046. S2CID4782745.
^Ghadam, M.; Banaii, M.; Mohammed, E.T.; Suthar, J.; Shamsi, S. (2 March 2017). "Morphological and molecular characterization of selected species of Hysterothylacium (Nematoda: Raphidascarididae) from marine fish in Iraqi waters". Journal of Helminthology. 92 (1): 116–124. doi:10.1017/S0022149X17000128. PMID28249628. S2CID22733129.