Order Spirurida Chitwood 1933

Family Cucullanidae Cobbold 1864

Genus Cucullanus Müller 1777

• Cucullanus cirratus Müller 1777 – marine, parasite, common. Adults and larvae in cod, navaga, sculpin – Валовая, 1978; Вальтер, 1990.

Family Ascarophididae Trofimenko 1967

Genus Cystidicoloides Skinker 1931

• Cystidicoloides uniseriata Valovaya et Walter, 1988 – type locality, marine, parasite, rare. Adults and larvae in cod – Валовая,Вальтер, 1988.

Genus Ascarophis van Beneden 1871

• Ascarophis arctica Poljansky 1952 – marine, parasite, common. Adults and larvae in gammarus shrimps; Jaera albifrons were experimentally infected; nemerteans Amphiporus – Вальтер, 1986. As it was detected only in invertebrates, it is likely a new species.
• Ascarophis filiformis Poljansky 1952 - marine, parasite, rare. Adults and larvae in cod – Вальтер, Валовая 1989.

rus:Отряд Spirurida Chitwood 1933