A new species ofMizelle & Price 1964 (Monogenea: Dactylogyridae) parasite ofEigenmann & Kennedy, 1903 (Hemiodontidae) from the upper Paraná River floodplain.

Abstract

During the study of ectoparasites (Platyhelminthes) of fish in the floodplain of the Upper Paraná River - Brazil, a new species of, present in the gill filaments of(Hemiodontidae), is described using morphological description and molecular data from the mitochondrial region of cytochromeoxidase, subunit 1 () and the partial region of the 28S rDNA gene.n. sp. differs from all its congeners by the presence of a filament that joins the accessory piece to the base of the male copulatory organ and resemblesandPhylogenetic analyses using molecular data revealed thatn. sp. forms a paraphyletic group concerning the otherspecies. In this way, as well as contributing to the description of a new species, we seek to encourage and contribute to the increase in research using integrative taxonomy, thus making it possible to elucidate some unresolved questions about the genus