It seems to me a Listrocerum Chevrolat, 1855 (Xystrocerini). The only species mentioned by Adlbauer & Mourglia (1995) from Togo is Listrocerum bicolor (Lepesme, 1950).
in Titan the genus is cited in Oemini and it seems there is a half dozen species in Western Africa trying to determine one of mine that I caught in Angola, I also look first in xystrocerini as this is soft with a head and basal antenna that looks like those of Xystrocera
s'il n'y pas de solution c'est qu'il n'y a pas de problème ! akuna matata ....
I know. The division between Oemini and Xystrocerini is totally artificial and I have already synonymised both tribes. I do not know why and on which characters some entomologists keep maintain it...