Hysterothylacium melanogrammi (Smedley, 1934) Deardorff & Overstreet, 1981

Synonyms: Contracaecum melanogrammi Smedley, 1934; Thynnascaris melanogrammi (Smedley, 1934) Margolis & Arthur, 1979

Comments: as noted by McDonald & Margolis (1995), Margolis & Arthur (1979) listed a previous Canadian record as Thynnascaris melanogrammi . Deardorff & Overstreet (1981) considered the genus Thynnascaris to be a junior synonym of Hysterothylacium and listed the species as H. melanogrammi n. comb. In agreement with McDonald & Margolis (op. cit.) the validity of this species requires re-assessment (see also Comments on H. magnum above).

Site: intestinal lumen

Host: Melanogrammus aeglefinus

Distribution: Atlantic

Record: Smedley 1934