Yes, this one is R. brunnea, or a closely related species. Your image 3 shows the characteristic shape of the prothorax in the brunnea-group: widest at the base and tapering slightly towards the head.
Image 3 shows that the elytra taper towards the apex is more rounded than brunnea, indicating that it is Rhinotia near brunnea (see Zimmerman vol 5, Plate 32)