Despite the size ratio discrepancy, I still think this is validus. I just measured fig 11 and got ~1.75 for validus and ~1.55 for interjectus. I think you may be measuring incorrectly. The correct way to measure elytral length for Euwallacea is in the lateral view, from the top front margin to the tip of the declivity, so basically a diagonal line across the elytra in the lateral view. Totally not intuitive, so can easily be misinterpreted. See (1) figure 1. (Although, in that paper, they measure elytral width as the width of only 1 elytron, which wouldn't give the ratios in the Euwallacea key either. I'll have to ask them about that one. I can send you a copy if you don't have access to that journal). At any rate, the habitus, overall length, and declivital tubercles (the ones on interstriae 2 don't continue all the way to the apex, somewhat noticeable in your dorsal shot) all point to validus. For future reference, nearly always helpful for scolytinae is an oblique shot of the declivity such as the one below.


Hope this helps!

Moved from Euwallacea.

Moved from Beetles.