Thatcher & Boeger 1983. The parasitic crustaceans of fishes from the Brazilian Amazon. 5. Brasergasilus gen. nov. (Copepoda: Cyclopidea), a 'three-legged' ergasilid, with two new species and the proposal of Abergasilinae subfam. nov. Acta Amazonica, 13(1) 1983: 195-214