''Protosarcotretes'' is a genus of

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

copepod Copepods (; meaning "oar-feet") are a group of small crustaceans found in nearly every freshwater and saltwater habitat (ecology), habitat. Some species are planktonic (inhabiting sea waters), some are benthos, benthic (living on the ocean floor) ...

s in the family

Pennellidae Pennellidae is a family of parasitic copepods. When anchored on a host, they have a portion of the body on the outside of the host, whereas the remaining anterior part of the parasite is hidden inside tissues of the host. Genera There are 24 ge ...

. Its type-species is ''

Protosarcotretes nishikawai ''Protosarcotretes'' is a genus of marine copepods in the family Pennellidae. Its type-species is ''Protosarcotretes nishikawai''. This genus exhibits the most plesiomorphic states in the first to fourth legs of pennellids, and is differentiated ...

''. This genus exhibits the most plesiomorphic states in the first to fourth legs of pennellids, and is differentiated from two closely related pennellid genera '' Sarcotretes'' and '' Lernaeenicus'' by the morphology of the oral appendages.

Species

According to Ohtsuka, Lindsay & Izawa (2018), three species are included in the genus: * ''

'' Ohtsuka, Lindsay & Izawa, 2018 This species is a parasite of the Pacific viperfish, ''

Chauliodus macouni The Pacific viperfish, ''Chauliodus macouni'', is a predatory deep-sea fish found in the North Pacific. It is reported as being either mesopelagic or bathypelagic, with diel vertical migration to shallower waters. The Pacific viperfish is one of ...

''. * ''

Protosarcotretes multilobatus ''Protosarcotretes'' is a genus of marine copepods in the family Pennellidae. Its type-species is ''Protosarcotretes nishikawai''. This genus exhibits the most plesiomorphic states in the first to fourth legs of pennellids, and is differentiated ...

'' (Lewis, 1959) Ohtsuka, Lindsay & Izawa, 2018 * ''

Protosarcotretes gnavus ''Protosarcotretes'' is a genus of marine copepods in the family Pennellidae. Its type-species is ''Protosarcotretes nishikawai''. This genus exhibits the most plesiomorphic states in the first to fourth legs of pennellids, and is differentiated ...

'' (Leigh-Sharpe, 1934) Ohtsuka, Lindsay & Izawa, 2018 Parasite170136-fig1 Protosarcotretes nishikawai.png, ''Protosarcotretes nishikawai'' Parasite170136-fig2 Protosarcotretes nishikawai.png, ''Protosarcotretes nishikawai'' Parasite170136-fig3 Protosarcotretes nishikawai.png, ''Protosarcotretes nishikawai''

References

Siphonostomatoida {{copepod-stub