Parvoscincus tikbalangi, also known as the Sierra Madres aquatic skink, is a species of skink endemic to the island of Luzon, the Philippines. References Parvoscincus Reptiles of the Philippines Endemic fauna of the Philippines Fauna of Luzon Reptiles described in 2014 Taxa named by Cameron D. Siler Taxa named by Charles W. Linkem Taxa named by Kerry Cobb Taxa named by Jessa L. Watters Taxa named by Sean T. Cummings Taxa named by Arvin Cantor Diesmos Taxa named by Rafe M. Brown