There are two species of Ossonis recorded from Borneo, and several from Sumatra and nearby. The image of Ossonis clytomima in Pascoe 1867 shows apex of elytra truncate with maybe a very short external spine. A photo of the type of O. hirsutipes shows the elytral apex narrowly truncate, but my photo is not real good.
The patterns of O. clytomima and O. hirsutipes Aur. are different from what is shown on my specimen.
I have other Saperdini with clytine-like patterns which I will post later. I have not had much luck in identifying these species, even to genus.