Selenogyrus brunneus is a species of tarantula (family Theraphosidae, subfamily Selenogyrinae), found in West Africa (likely Togo).
S. brunneus is brown with greyish-olive green hairs and is about 50mm long. Foveal groove procurved. Embrik Strand gave no further details in his description of the species (other than the eye arrangement and spination).