Pseudanhammus keili Ritsema, 1889 ? I only know its description: it is a species of 20 to 25 mm, with elytra granulated at the base, and covered with yellow spots, etc...
After reading the description of Ritsema (RITSEMA Conrad zoon, 1889.On some sumatran Coleoptera with description of a new genus and species of Longicorn. Notes from the Leyden Museum 11 (4): 241-246) I fully agree with you. My specimen seems to be a female (antennae twice as long as the body in the specimen used for the description).
Thanks for your invaluable help, Xavier. Saludos Sergio