Eutropis longicaudata
(Hallowell, 1857)
Khao Yai NP, Nakhon Ratchasima, Thailand. February 25, 2016.
At Khao Yai National Park, I saw several of these skinks, and the first one was high in a tree.
My Flickr album for this species is here.
HerpMapper records for this species are here.