Illustrated Key to the Snakes of the Philippines Author Weinell, Jeffrey L. Department of Ecology and Evolutionary Biology and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045; jweine2@gmail.com Author Hooper, Errol Department of Ecology and Evolutionary Biology and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045; Author Leviton, Alan E. Herpetology Division, Institute of Biodiversity Science & Sustainability, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, California 94118. * Corresponding author; Email: jweine 2 @ gmail. com Author Brown, Rafe M. Department of Ecology and Evolutionary Biology and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045; text Proceedings of the California Academy of Sciences 2019 2019-09-30 66 1 1 49 journal article 299708 10.5281/zenodo.11512680 ccd739a4-10c3-4700-b27e-459bd82f1676 0068-547X 11512680 Ahaetulla Key to Philippine species and subspecies. 1a. Precloacal scale not divided; ≥ 2 preocular scales........... Ahaetulla prasina preocularis 1b. Precloacal scale divided; one preocular scale...................................... 2 2a. Usually two loreal scales; endemic to Sulu Archipelago........ Ahaetulla prasina suluensis 2b. Usually one loreal scale; endemic to Palawan ................. Ahaetulla prasina prasina