Proteocephalus longicollis (Zeder 1800)

are endoparasites of

• Global Biotic Interactions: Eucyclops agilis
• Global Biotic Interactions: Mesocyclops leuckarti
• Global Biotic Interactions: Eudiaptomus zachariasi (Poppe 1886)
• Global Biotic Interactions: Coregonus widegreni Malmgren 1863 (Pool whitefish)
• Global Biotic Interactions: Tropocyclops prasinus

have host

• Global Biotic Interactions: Coregonus pollan Thompson 1835 (Pollan)

parasitize

• Global Biotic Interactions: Oncorhynchus clarkii (Richardson 1836) (cutthroat trout)
• Global Biotic Interactions: Salvelinus alpinus (Linnaeus 1758) (Arctic Char)
• Global Biotic Interactions: Eucyclops agilis
• Global Biotic Interactions: Coregonus autumnalis (Pallas 1776) (Arctic Cisco)
• Global Biotic Interactions: Oncorhynchus mykiss (Walbaum 1792) (Rainbow Trout)