Abstract
Adults of Octospiniferoides incognita SCHMIDT & HUGGHINS, 1973, (Acanthocephala: Neoechinorhynchidae) are described for the first time. The host fish, Schizodon fasciatum AGASSIZ, was taken from
the Guaporé River of Rondônia State, Brazil. Three male specimens were 3.7 - 4.9 mm long and six
females were 4.2 - 10.7 mm long. Large proboscis hooks in the anterior circle were 78 - 88 micrometers;
medium hooks were 44 - 66 µm and the small posterior ones were 37 - 44 µm.
