A new species of Demidospermus Suriano, 1983 (Monogenea, Dactylogyridae) parasitic on Loricariichthys platymetopon Isbrucker et Nijssen (Loricariidae, Siluriformes) from the Upper Parana River floodplain, Brazil

作者：Ferrari Hoeinghaus Ana P^*; Bellay Sybelle; Takemoto Ricardo M; Pavanelli Gilberto C

来源：Acta Parasitologica, 2010, 55(1): 16-19.

DOI：10.2478/s11686-010-0007-5

• Monogenea
• Dactylogyridae
• Demidospermus paranaensis sp nov.
• Loricariidae
• Loricariichthys platymetopon
• Brazil

Demidospermus paranaensis sp. nov. is described from the gills of Loricariichthys platymetopon Isbrucker et Nijssen (Loricariidae, Siluriformes) from the Upper Parana River floodplain, Brazil. This new species differs from other members of Demidospermus in the following features: tegument with annulations throughout trunk and peduncle, eyes absent, longer male copulatory organ (MCO) with ovate base. Demidospermus paranaensis sp. nov. is similar to its congenerics by having tandem gonads, a counterclockwise-coiled MCO, non-articulated groove-like accessory piece serving as a MCO guide, sinistral vaginal aperture, and V-shaped haptoral bars.

• 出版日期2010-3