Hysterothylacium auctum (Rudolphi 1802) Deardorff & Overstreet 1981

have host

• Global Biotic Interactions: Zoarces viviparus (Linnaeus 1758) (eelpout, viviparous blenny)

parasitize

• Global Biotic Interactions: Gobiusculus flavescens (Fabricius 1779) (Spotted Goby)
• Global Biotic Interactions: Pomatoschistus microps (Krøyer 1838) (Common Goby)
• Global Biotic Interactions: Pennahia argentata (Houttuyn 1782) (Croaker)
• Global Biotic Interactions: Scophthalmus maximus (Linnaeus 1758) (turbot)
• Global Biotic Interactions: Myoxocephalus scorpius (Linnaeus 1758) (Shorthorn sculpin)