Dactylogyrids (Platyhelminthes: Monogenea) from Sudanese Spp., with a Description of n. Sp. and a Redescription of Guégan, Lambert & Euzet, 1989.

Dactylogyrid monogeneans of Heckel, 1847 and . (Linnaeus, 1758) (Cyprinidae) were surveyed at two sites on the River Nile in Sudan. The present study reports the presence of ten species of Diesing, 1850 and three species of Bychowsky, 1936 based on a morphometric evaluation of the sclerotised structures. The species found include: Guégan, Lambert & Euzet, 1988; . Guégan, Lambert & Euzet, 1988; . Guégan, Lambert & Euzet, 1988; . Paperna, 1969, . Musilová, Řehulková & Gelnar, 2009 and five other undescribed species of . The genus was represented by Guégan, Lambert & Euzet, 1989; the newly identified . n. sp., and one undescribed species. While . n. sp. resembles . , it differs from this species and other congeners by having a longer ventral bar and anchor points and nosclerotised vagina. In addition, this study redescribes . based on the morphology of specimens collected from . . All specimens studied had a single large vagina, in contrast to the original description which reported a vagina composed of two unconnected parts. All dactylogyrid species in this study represent new host and geographical records.