Neotropica l Monogenoidea. 19. Dactylogyridae of Cichlids (Perciformes) from the Yucatan Peninsula, with Descriptions of Three New Species of Sciadicleithrum Kritsky, Thatcher, and Boeger, 1989

Three new species of Sciadicleithrum are described from the gills of cichlids from the Yucatan Peninsula in North America: Sciadicleithrum mexicanum sp. n. from "Cichlasoma" wophthalmus (Giinther); Sciadicleithrum bravohollisae sp. n. from "C." pearsei (Hubbs) (type host), "C." synspilum Hubbs, and Petenia splendida Giinther; and Sciadicleithrum splendidae sp. n. from P. splendida. Cichlidogyrus sclerosus Paperna and Thurston, 1969, is reported from the gills of Oreochromis niloticus (Linnaeus), an introduced fish in Mexico.