Phylogeny and revision of Diplectanidae Monticelli, 1903 (Platyhelminthes: Monogenoidea) Author Domingues, Marcus V. Author Boeger, Walter A. text Zootaxa 2008 1698 1 40 journal article 10.5281/zenodo.180750 5dceb45e-697e-4b7c-ba08-dca724f4c62a 1175-5326 180750 Anoplectanum Boeger, Fehlauer & Marques, 2006 Diagnosis: Tegument smooth. Genital pore opening posterior to male copulatory organ (MCO). Genital atrium muscular. Vas deferens apparently looping left intestinal caecum. MCO tubular, composed of 2 nested tubes; external tube uniform. Accessory piece absent. Prostatic reservoir simple. Accessory copulatory organ absent. Vaginal atrium sclerotized [61] . Vaginal aperture marginal. Accessory adhesive organ absent. Superficial root of ventral anchor developed. Parasites of freshwater perciform fishes ( Sciaenidae ). Type species: Anoplectanum haptorodynatum Boeger, Fehlauer & Marques, 2006 from Petilipinnis grunniens . Other species: Anoplectanum microsoma Boeger, Fehlauer & Marques, 2006 from Pachyurus junki Soares & Cassati , and Petilipinnis grunniens . Remarks: Anoplectanum is sister group of Murraytrematoides . Both genera share the secondary loss of accessory adhesive organ. However, Anoplectanum differs from Murraytrematoides in the comparative morphology of the vaginal atrium (i.e., sclerotized in Anoplectanum ; muscular in Murraytrematoides ).