Well, this one is not very far from O.pustulata (right on the picture). The pattern on the apical third of elytrae is similar in spite of a less of ocher coloration. The global shaping of pronotum corresponds also even if the central V configuation remains very strange.
The lectotype shown on Bezark's website is a female. O. senilis is a grayish-white species, not just some faded shade of brown. O pustulata is a totally different color, among other differences.
There is a specimen shown on Bezark's website of a specimen from the Hovore Collection. This might be an error.