Lalashan, Taoyuan County, Taiwan Neolucanus swinhoei Bates, 1866Family Lucanidae Reference:Bates, H. W. 1866. On a collection of Coleoptera from Formosa, sent home by R. Swinhoe. Proc. Zool. Soc. London 1866: 339-355.
Another image of the same critter--a different part. This is at lower magnification than the one with the big spot. This should be helpful in solving the first super-crop.