I cannot wait until I finish studying this nice beetle myself, so I place it here. I don't know the tribe. Mesotibia has a furrow on outer side and a tooth on inner side. 6 mm.
This is a member of several "groups" inside the genus Sybra, but I have in the moment no name. Other members are Sybra tricoloripennis Breuning from Sulawesi and Sybra marcida Pascoe from West-Papua with the new synonyms intorta B., papuana B. and pseudogeminata B. You can see that in our next publication.