A new species of Cosmetocleithrum (Monogenea, Dactylogyridae) from the gills of Auchenipterichthys coracoideus (Siluriformes, Auchenipteridae) from the Peruvian Amazonia

Murrieta Morey G.A.; Tuesta Rojas C.A.; Arellano H.S.; Rodríguez Chu L.A. · Revista Peruana de Biologia (2024) · DOI: 10.15381/rpb.v31i1.26253

Resumen

In this study, a new species of Monogenoidea, Cosmetocleithrum amazonensis n. sp., parasitizing the gills of the silurid Auchenipterichthys coracoideus (Eigenmann & Allen, 1942), is documented. Cosmetocleithrum amazonensis n. sp. is distinguished from all other congeners by possessing an elongated, sclerotized, and sinuous male copulatory organ (MCO) with poorly defined spirals, a sclerotized border at the base, and the distal region supported by the accessory piece. The accessory piece is a single, robust, and non-articulated plate with the MCO. This study presents the third record of a Monogenoidea species in an Auchenipteridae (Siluriformes) host from Peru. © Los autores.