Ergasilus

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 antennae 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 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 curticrus Muriel-Hoyos, Santana-Pineros, Cruz-Quintana & Suarez-Morales, 2015 Ergasilus cyanopictus Ergasilus cyprinaceus W. A. Rogers, 1969 Ergasilus elongatus C. B. Wilson, 1916 Ergasilus ereimia Vandenberg, 2026 Ergasilus felichthys (Pearse, 1947) Ergasilus fryeri Ergasilus funduli Krøyer, 1863 Ergasilus gibbus Von Nordmann, 1832 Ergasilus globosus Ergasilus labracis Krøyer, 1863 Ergasilus lamellifer Fryer, 1961 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