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Cyphonistes vallatus
i'm sure it is a fork-horned rhino beetle. http://www.projectnoah.org/spottings/169...
a member of the Bolboceratidae perhaps, or else a horned dung beetle. The Bolboceratidae have clubbed antennae while the dung beetles have subdivided ends to their antennae. I think your photo #2 is showing clubs.