The new sp. is described and illustrated from a single 3, collected in Gabon. Holotype 3 ; Eastern Gabon, Makokou area, 1 -XI-1976; deposited in MNHN, Paris. It lives in the upper sections of forest streams. The new sp. seems to be close to T. aurivillii Sjostedt, 1899, but it is very different from the sympatric T. tenaculatus (Fraser, 1926), known from this region.