This paper appeared on my ResearchGate homepage, and I thought it may be of interest:
Pyrcz & Sáfián, 2018. A new subspecies of Cymothoe fumana (Westwood, 1850) from Western Nigeria (Lepidoptera: Nymphalidae: Limenitidinae). Metamorphosis, 29: 5-8.
Abstract: A new subspecies of Cymothoe fumana is described from Western Nigeria. It differs from the other three recognized subspecies significantly in the colour patterns of the females, but the males are nearly indistinguishable. The new taxon is yet another example of endemism among western Nigeria butterflies.