drumonti has 12 antennomères and no inner elytra spines then it is spinicornis ps drumonti exists in Congo (RD, it is an atltitude forest species in Congo, Burundi and Runada (probably also Uganda)
s'il n'y pas de solution c'est qu'il n'y a pas de problème ! akuna matata ....
Finally, this specimen seems to belong to an uncommon form of spinicornis: C. spinicornis marchalli Gilmour,1956 which is caracterised by a clearer spotted pubescence on elytrae. Here an other specimen from RCI: