''Ergasilus'' is a genus of

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) ...

crustaceans occurring in both the ocean and

fresh water Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include ...

, often called gill lice. The females are parasitic upon the gills of fishes. Being copepods, gill lice have a single median eye on their head. The second

antenna Antenna ( antennas or antennae) may refer to: Science and engineering * Antenna (radio), also known as an aerial, a transducer designed to transmit or receive electromagnetic (e.g., TV or radio) waves * Antennae Galaxies, the name of two collid ...

e are modified into prehensile pincers. Male gill lice are free-living. Species include: *'' Ergasilus anchoratus'' Markevich, 1946 *'' Ergasilus arthrosis'' L. S. Roberts, 1969 *''

Ergasilus auritus ''Ergasilus'' is a genus of copepod crustaceans occurring in both the ocean and fresh water, often called gill lice. The females are parasitic upon the gills of fishes. Being copepods, gill lice have a single median eye on their head. The second ...

'' Markevich, 1940 *'' Ergasilus briani'' Markevich, 1932 *'' Ergasilus caeruleus'' C. B. Wilson, 1911 *'' Ergasilus celestis'' J. F. Müller, 1937 *'' Ergasilus centrarchidarum'' Wright, 1882 *'' Ergasilus cerastes'' L. S. Roberts, 1969 *'' Ergasilus chautauquaensis'' Fellows, 1887 *'' Ergasilus clupeidarum'' S. K. Johnson & W. A. Rogers, 1972 *'' Ergasilus cotti'' Kellicott, 1892 *''

Ergasilus cyanopictus ''Ergasilus'' is a genus of copepod crustaceans occurring in both the ocean and fresh water, often called gill lice. The females are parasitic upon the gills of fishes. Being copepods, gill lice have a single median eye on their head. The second ...

'' *''

Ergasilus cyprinaceus ''Ergasilus'' is a genus of copepod crustaceans occurring in both the ocean and fresh water, often called gill lice. The females are parasitic upon the gills of fishes. Being copepods, gill lice have a single median eye on their head. The second ...

'' W. A. Rogers, 1969 *''

Ergasilus elongatus ''Ergasilus'' is a genus of copepod crustaceans occurring in both the ocean and fresh water, often called gill lice. The females are parasitic upon the gills of fishes. Being copepods, gill lice have a single median eye on their head. The second ...

'' C. B. Wilson, 1916 *''

Ergasilus felichthys ''Ergasilus'' is a genus of copepod crustaceans occurring in both the ocean and fresh water, often called gill lice. The females are parasitic upon the gills of fishes. Being copepods, gill lice have a single median eye on their head. The second ...

'' (Pearse, 1947) *''

Ergasilus fryeri ''Ergasilus'' is a genus of copepod crustaceans occurring in both the ocean and fresh water, often called gill lice. The females are parasitic upon the gills of fishes. Being copepods, gill lice have a single median eye on their head. The second ...

'' *''

Ergasilus funduli ''Ergasilus'' is a genus of copepod crustaceans occurring in both the ocean and fresh water, often called gill lice. The females are parasitic upon the gills of fishes. Being copepods, gill lice have a single median eye on their head. The second ...

'' Krøyer, 1863 *'' Ergasilus gibbus'' Von Nordmann, 1832 *'' Ergasilus globosus'' *'' Ergasilus labracis'' Krøyer, 1863 *'' Ergasilus lanceolatus'' C. B. Wilson, 1916 *'' Ergasilus lizae'' Krøyer, 1863 *'' Ergasilus longimanus'' *'' Ergasilus luciopercarum'' Henderson, 1926 *'' Ergasilus manicatus'' C. B. Wilson, 1911 *'' Ergasilus megaceros'' C. B. Wilson, 1916 *'' Ergasilus mugilis'' Vogt, 1877 *'' Ergasilus myctarothes'' *'' Ergasilus nerkae'' L. S. Roberts, 1963 *'' Ergasilus orientalis'' *'' Ergasilus rhinos'' Burris & G. C. Miller, 1972 *'' Ergasilus sieboldi'' Von Nordmann, 1832 *'' Ergasilus tenax'' L. S. Roberts, 1965 *'' Ergasilus turgidus'' Fraser, 1920 *'' Ergasilus versicolor'' C. B. Wilson, 1911 *'' Ergasilus wareaglei'' S. K. Johnson, 1971 *'' Ergasilus wilsoni''

References

Poecilostomatoida Parasitic crustaceans Taxa named by Alexander von Nordmann {{parasitic animal-stub