Neotropical Monogenoidea 62. Biotodomella mirospinata gen. nov., sp. nov. (Polyonchoinea: Dactylogyridae): a parasite of the gills of Biotodoma cupido (Cichliformes: Cichlidae), from the Peruvian Amazon Author Morey, Germán Augusto Murrieta Instituto de Investigaciones de la Amazonía Peruana. Iquitos, Maynas Province, Peru. Author Arimuya, Mariana Vásquez Instituto de Investigaciones de la Amazonía Peruana. Iquitos, Maynas Province, Peru. wboeger@gmail.com Author Boeger, Walter A. Biological Interactions, Universidade Federal do Paraná. Caixa Postal 19073, 81531 - 890 Curitiba, PR, Brazil. Corresponding author: Walter A. Boeger (wboeger @ gmail. com) text Zoologia 2019 e 38455 2019-11-26 36 1 5 http://dx.doi.org/10.3897/zoologia.36.e38455 journal article 10.3897/zoologia.36.e38455 1984-4689 13175762 77B1E258-D08D-4454-9609-780B1B6A986A Biotodomella gen. nov. http://zoobank.org/ 91004D5C-AB44-46FB-9DB2-D745ED278836 Diagnosis. Dactylogyridae . Body comprising cephalic region, trunk, peduncle and haptor. Tegument smooth. Head organs and two pairs of cephalic lobes present. Eyespots 4. Mouth ventral; pharynx muscular; intestinal caeca two, confluent posteriorly to testis. Common genital pore mid-ventral, at level of intestinal bifurcation. Gonads intercaecal, tandem; germarium anterior to testis. Vas deferens loops left intestinal caecum; seminal vesicle a simple dilation of vas deferens. Copulatory complex comprising male copulatory organ (MCO) and accessory piece. MCO sclerotized, clockwise; accessory piece articulated to base of MCO by delicate process. Seminal receptacle present, anterior to germarium; vaginal aperture dextral, sclerotized; vaginal duct a sclerotized tube. Vitelline follicles dense, overlapping caeca. Haptor armed with seven pairs of hooks with ancyrocephaline distribution ( Mizelle 1936 ), ventral and dorsal pairs of anchors, and ventral and dorsal bars. Hooks of each hook pair well-differentiated from the remaining pairs; shaft varying in robustness, proximal end of shaft of pairs 1–3, 6–7 with variably sclerotized expansions. Ventral and dorsal bars elongate, distinct. Anchors of distinct morphology and size; both with short deep, elongate superficial roots. Dorsal anchor with grooved shaft, bifid point. Parasites of the gill filaments of B. cupido ( Perciformes : Cichlidae ). Type-species. Biotodomella mirospinata sp. nov. Etymology. The generic epithet derived from the genus of the host, Biotodoma Eigenmann & Kennedy, 1903 .