That does not look like chewi. I don't have access to my collection now, but you should consider the other two similar species in Sabah: basalis and pryeri. Are you using Morati and Huet's key?
I don't have access to my collection now, but you should consider the other two similar species in Sabah: basalis and pryeri. Are you using Morati and Huet's key?
The pronotum of both species is punctured; thus, basalis and pryeri are out. It might also be Pachyteria jeanninae. Body size?
Have you tried to use Philippes's key to Pachyteria present in our Site here?