This species has a wide distribution (see here) but it should be new for Tibet. The book of the Iconography of Chinese Longicorn beetles does not mention it for Tibet.
yes, there're many insects species from Tibet were still missing from the distribution records,so even if thouse looks very similar(actually is same sp.) for some of them i still seriouslly ask again.
so,normally i determine them by relying on the distribution from NE.india/Nepal/N.Myanmar for it's very closed in geographic connection. the knowledge of geographic distribution is very important.
Have you this publication? WEIGEL, A.(2006): Checklist and Bibliography of Longhorn Beetles from Nepal (Cerambycidae) - In: Hartmann & Weipert (Hrsg.): Biodiversität und Naturausstattung im Himalaya II. - Verein der Freunde und Förderer des Naturkundemuseums Erfurt: 495-510. The spec. is records in Nepal.