Synonyms: “ Porrocaecum -type” sp. auct.; Phocanema sp. auct.; “codworm”; “sealworm”
Sites: alimentary tract, body cavity, mesenteries, musculature, viscera
Hosts: Amblyraja radiata (15); Anoplarchus purpurescens (13); Anoplopoma fimbria (4); Atheresthes stomias (14); Gadus macrocephalus (4); Gadus morhua (1, 3, 6, 8, 12, 18); Gadus macrocephalus (6); Glyptocephalus cynoglossus (6, 11); Hippoglossoides platessoides (6, 11); Hippoglossus hippoglossus (11); Leucoraja ocellata (9); Limanda ferrugineus (6, 11); Lophius americanus (6); Melanogrammus aeglefinus (6); Microgadus tomcod (6); Myoxocephalus octodecemspinosus (6); Myoxocephalus polyacanthocephalus (13); Oncorhynchus nerka (5); Ophiodon elongatus (4, 13); Osmerus mordax (6, 20); Pleuronectes putnami (11); Pseudopleuronectes americanus (11); Raja sp. (10); Rhamphocottus richardsonii (13); Scophthalmus aquosus (11); Sebastes flavidus (21); Sebastes norvegicus (6); Squalus acanthias (15); Tautogolabrus adspersus (17); Theragra chalcogramma (13); unspecified “cod” (2, 7, 16); unspecified “fish” (19)
Distribution: Atlantic, British Columbia, Canada, Pacific
Records: 1. Smedley 1934 (AT); 2. Needler 1947 (AT); 3. Heller 1949 (AT); 4. Margolis 1952b (PA); 5. Margolis 1957 (BC); 6. Templeman et al. 1957 (AT); 7. Crampton et al. 1960 (AT); 8. Fleming 1960 (AT); 9. Myers 1959a (AT); 10. Myers 1960 (AT); 11. Ronald 1963 (AT); 12. Wiles 1968 (AT); 13. Arai 1969 (PA); 14.
Kovalenko 1969 (PA); 15. Threlfall 1969 (AT); 16. Chitwood 1970 (CA); 17. Sekhar S. [sic] & Threlfall 1970 (AT); 18. Kates et al. 1973 (AT); 19. Redkozubova 1976 (AT); 20. Threlfall 1981 (AT); 21. Stanley et al. 1992 (PA)