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1 July 2015 Anacanthorus toledoensis n. sp. and Mymarothecium ianwhittingtoni n. sp. (Dactylogyridae: Monogenoidea) Parasitizing Cage-Reared Piaractus mesopotamicus (Characiformes, Characidae) in the State of Paraná, Brazil
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Abstract

Two new species of Dactylogyridae (Monogenoidea) found parasitizing the gills of the pacu, Piaractus mesopotamicus (Holmberg, 1887), are described: Anacanthorus toledoensis n. sp. and Mymarothecium ianwhittingtoni n. sp. These monogenoideans were collected in the gills of all 38 pacus reared in cages in Toledo, State of Paraná, Brazil. Anacanthorus toledoensis n. sp. is characterized by the slightly sigmoid male copulatory organ (MCO) with a membranous flap along the longitudinal axis, which ends at the distal, spatulated portion of the organ, and by the rod-shaped accessory piece bearing a protruding median projection. Mymarothecium ianwhittingtoni n. sp. differs from all other species of the genus by the morphology of the anchors and by the structure of the copulatory complex comprising an arcuate MCO, with basal flap and accessory piece with a distal rod, somewhat sigmoid, and subterminal flap hooked.

The Helminthological Society of Washington
Mariana S. L. Leão, Sérgio C. São Clemente, and Simone C. Cohen "Anacanthorus toledoensis n. sp. and Mymarothecium ianwhittingtoni n. sp. (Dactylogyridae: Monogenoidea) Parasitizing Cage-Reared Piaractus mesopotamicus (Characiformes, Characidae) in the State of Paraná, Brazil," Comparative Parasitology 82(2), 269-274, (1 July 2015). https://doi.org/10.1654/4759.1
Published: 1 July 2015
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