Zootaxa 4107 (3): 367–380 ISSN 1175-5326 (print edition) http://www.mapress.com/j/zt/ Article ZOOTAXA Copyright © 2016 Magnolia Press ISSN 1175-5334 (online edition) http://doi.org/10.11646/zootaxa.4107.3.5 http://zoobank.org/urn:lsid:zoobank.org:pub:7791AAD7-2F1D-47EB-88A7-1B97C765BFFC Phylogenetic relationships of geckos of the Hemiphyllodactylus harterti group, a new species from Penang Island, Peninsular Malaysia, and a likely case of true cryptic speciation ANTHONY COBOS1, L. LEE GRISMER1, PERRY L. WOOD, JR.2, EVAN S. H. QUAH3, SHAHRUL ANUAR3,4 & MOHD ABDUL MUIN3 1Department of Biology, La Sierra University, 4500 Riverwalk Parkway, Riverside, California 92515 USA. E-mail:
[email protected],
[email protected] 2Department of Biology, Brigham Young University, 150 East Bulldog Boulevard, Provo, Utah 84602 USA. E-mail:
[email protected] 3School of Biological Sciences, Universiti Sains Malaysia, 11800 USM, Pulau Pinang, Penang, Malaysia. E-mail:
[email protected],
[email protected],
[email protected] 4Center for Marine and Coastal Studies, Universiti Sains Malaysia, 11800 USM, Pulau Pinang, Malaysia Abstract An integrative taxonomic analysis based on the mitochondrial gene ND2 and its flanking tRNAs, morphology, and color pattern indicates that a newly discovered gecko described herein as Hemiphyllodactylus cicak sp. nov. from Penang Hill on the Island of Penang, Peninsular Malaysia is a member of the H. harterti group. Hemiphyllodactylus cicak sp. nov. is most closely related to the clade composed of the sister species H. harterti from Bukit Larut, Perak in the Bintang Moun- tain Range and H. bintik from Gunung Tebu, Terengganu from the Timur Mountain Range.