Probably an undescribed genus. I can't tell what tribe it is. This species has been known to me for a long time and I have shown it's image to others. I believe there are two closely related species in Borneo. One is somewhat dark blue, the other is dark green.
Thank you very much for the information. I am sorry for the delay encoutered for thanking you, but there is something that works in an odd manner in my computer, and I was not advised that I had received an answer.