[3] Its name commemorates Professor Walter Verheyen, who was the first to obtain a specimen of this species of duiker from Togo in 1968.

[4] It measures under 40 cm (16 in) tall at the shoulder, and weighs between 4 and 6 kg (8.8 and 13.2 lb).

It has a long tail, pedal glands and a distinctive stripe above the eye.

[5] It is intermediate in size between the larger Maxwell's duiker (Philantomba maxwellii) and the smaller blue duiker (Philantomba monticola), but is clearly different in morphology, cranial structure and DNA analysis.

The duikers have not been observed by researchers in the wild (until Spring of 2021, via video cameras), but are believed to come from the Dahomey Gap, an area of savannah which is a portion of the Guinean forest-savanna mosaic with a relatively dry climate, that extends all the way to the coast in Benin, Togo and Ghana, separating the rainforest zones on either side.