title: New and previously described species of Urocleidoides (Monogenoidea: Dactylogyridae) infecting the gills and nasal cavities of Hoplias malabaricus (Characiformes: Erythrinidae) from Brazil.
abstract: During an investigation of the biodiversity and structure of parasite communities among native populations of the erythrinid fish Hoplias malabaricus (Characiformes) from 7 rivers in Brazil, the following monogenoidean (Dactylogyridae) species were found: Urocleidoides malabaricusi n. sp., Urocleidoides naris n. sp., Urocleidoides cuiabai n. sp., Urocleidoides brasiliensis n. sp., and Urocleidoides eremitus Kritsky, Thatcher, and Boeger, 1986. Specimens considered as a new genus of Dactylogyridae were also found. The new species are mainly distinguished from the other 14 species of Urocleidoides in the general morphology of their copulatory and anchors/bar complexes. These new species and the new dactylogyrid genus are described, as well as supplemental observations and new illustrations of U. eremitus are provided. The present findings expand the known geographical distribution of species of Urocleidoides to southeastern and midwestern Brazil. A high speciation of this genus in the tropics is hypothesized, and it is briefly discussed.
authors.affiliation: Curso de Pós-Graduação em Ciências Veterinárias da Universidade Federal Rural do Rio de Janeiro (CPGCV, UFRRJ), BR 465, Km 7 CEP 23890-000, Seropédica, Rio de Janeiro, Brazil.
authors.forename: Daniele F
authors.initials: DF
authors.lastname: Rosim
authors.forename: Edgar F
authors.initials: EF
authors.lastname: Mendoza-Franco
authors.forename: José L
authors.initials: JL
authors.lastname: Luque
mesh_terms: D000818:Animals; D001938:Brazil; D005393:Fish Diseases / Q000469:parasitology*; D005399:Fishes; D005618:Fresh Water; D005880:Gills / Q000469:parasitology*; D009296:Nasal Cavity / Q000469:parasitology*; D010986:Platyhelminths / Q000033:anatomy & histology / Q000145:classification* / Q000302:isolation & purification; D014201:Trematode Infections / Q000469:parasitology / Q000662:veterinary*