| neotropical monogenoidea. 43. diplectanum monticellii n. sp. (diplectanidae) from the gills of cynoscion leiarchus (perciformes: sciaenidae) in brazil. | diplectanum monticellii n. sp. is described from the gills of cynoscion leiarchus, a marine sciaenidae, from itacuruçá, rio de janeiro (type locality); baía de guaratuba, paraná; and pontal do sul, paraná in brazil. the new species is characterized by the following features: bell-shaped male copulatory organ with a sleevelike base, accessory piece absent, vas deferens looping left intestinal cecum, vaginal aperture sinistroventral, and ventral anchor with elongate superficial and deep roots. | 2003 | 14533676 |