Ces 2 specimens semblent appartenir au même genre sinon même espèce ? de Trus Madi / Sabah / 17/13mm. pronotum avec protubérance et cicatrice du scape prononcée.
Your photographs are not very clear, so it is difficult to tell if the pubescence is rubbed off... or if the post-median transverse area is all black pubescence.
Here I post a photo of Mesosa revoluta... a common species in Sabah which exhibits some variability in the markings. M. albidorsalis is the only other common Mesosa in Sabah. Your specimens are not like Coptops.