title: Phylogeny of the Cyrtodactylus irregularis species complex (Squamata: Gekkonidae) from Vietnam with the description of two new species.
abstract: The number of described species of bent-toed geckos of the Cyrtodactylus irregularis species complex in Vietnam has increased from one to eight in the last six years. We combined morphological and molecular analyses to explore phylogenetic relationships among all described species in the group. The phylogeny required the description of two new species, Cyrtodactylus phuocbinhensis sp. nov. and Cyrtodactylus taynguyenensis sp. nov. Further, the tree resolved two additional undescribed clades that may also be new species. The species C. bugiamapensis and C. ziegleri were found to require redefinition. Cyrtodactylus phuocbinhensis sp. nov. is characterized by a series of enlarged femoral scales separated from preanal scales while Cyrtodactylus taynguyenensis sp. nov. does not possess enlarged femoral scales. Both new species are distinguished from other congeners by a combination of the following characters: small subcaudal scales, not transversely enlarged; presence (C. phuocbinhensis sp. nov.) or absence (C. taynguyenensis sp. nov.) of enlarged femoral scales; number of preanal pores; and dorsal pattern. Genetic distances between described species and new species were 16.5% and 2.0% in COI and RPL35, respectively, for C. phuocbinhensis sp. nov., and these distances were 18.8% and 2.2% for C. taynguyenensis sp. nov., respectively.
authors.affiliation: State Key Laboratory of Genetic Resources and Evolution, and Yunnan Laboratory of Molecular Biology of Domestic Animals, Kunming Institute of Zoology, Chinese Academy of Sciences, 32 Jiaochang Donglu, Kunming 250223, Yunnan, China. University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China Institute of Tropical Biology, Vietnam Academy of Science and Technology (VAST), 85 Tran Quoc Toan St., District 3, Ho Chi Minh City, Vietnam; Email: ngocsangitb@yahoo.com.
authors.forename: Sang Ngoc
authors.initials: SN
authors.lastname: Nguyen
authors.affiliation: Vietnam National University, Ho Chi Minh City, University of Science, 227 Nguyen Van Cu St., District 5, Ho Chi Minh City, Vietnam.; Email: le_ngan2309@yahoo.com.
authors.forename: Thanh-Ngan Thi
authors.initials: TN
authors.lastname: Le
authors.affiliation: Vietnam National University, Ho Chi Minh City, University of Science, 227 Nguyen Van Cu St., District 5, Ho Chi Minh City, Vietnam. Zoologisches Forschungsmuseum Alexander Koenig, Adenauerallee 160 53113 Bonn, Germany; Email: ttadao.hcmuns@gmail.com.
authors.forename: Thi Anh Dao
authors.initials: TA
authors.lastname: Tran
authors.affiliation: Zoological Institute, Russian Academy of Sciences, Universitetskaya nab 1, St. Petersburg 199034, Russia; Email: natalia_ananjeva@yahoo.com.
authors.forename: Nikolai L
authors.initials: NL
authors.lastname: Orlov
authors.affiliation: Centre for Biodiversity and Conservation Biology, Royal Ontario Museum, 100 Queen's Park, Toronto, Canada M5S 2C6.; Email: bob.murphy@utoronto.ca.
authors.forename: Amy
authors.initials: A
authors.lastname: Lathrop
authors.affiliation: Centre for Biodiversity and Conservation Biology, Royal Ontario Museum, 100 Queen's Park, Toronto, Canada M5S 2C6.; Email: bob.murphy@utoronto.ca.
authors.forename: Ross D
authors.initials: RD
authors.lastname: Macculloch
authors.affiliation: Vietnam National University, Ho Chi Minh City, University of Science, 227 Nguyen Van Cu St., District 5, Ho Chi Minh City, Vietnam.; Email: le_ngan2309@yahoo.com.
authors.forename: Thuy-Duong Thi
authors.initials: TD
authors.lastname: Le
authors.affiliation: State Key Laboratory of Genetic Resources and Evolution, and Yunnan Laboratory of Molecular Biology of Domestic Animals, Kunming Institute of Zoology, Chinese Academy of Sciences, 32 Jiaochang Donglu, Kunming 250223, Yunnan, China.; Email: unknown.
authors.forename: Jie-Qiong
authors.initials: JQ
authors.lastname: Jin
authors.affiliation: Hue University, College of Science, 77 Nguyen Hue St., Hue City, Vietnam.; Email: nguyenluanbio@gmail.com.
authors.forename: Luan Thanh
authors.initials: LT
authors.lastname: Nguyen
authors.affiliation: Vietnam National Museum of Nature, VAST, 18 Hoang Quoc Viet St., Hanoi, Vietnam; Email: nguyenthientao@gmail.com.
authors.forename: Tao Thien
authors.initials: TT
authors.lastname: Nguyen
authors.affiliation: Institute of Tropical Biology, Vietnam Academy of Science and Technology (VAST), 85 Tran Quoc Toan St., District 3, Ho Chi Minh City, Vietnam; Email: hoangdd39@yahoo.com.
authors.forename: Dat Duc
authors.initials: DD
authors.lastname: Hoang
authors.affiliation: State Key Laboratory of Genetic Resources and Evolution, and Yunnan Laboratory of Molecular Biology of Domestic Animals, Kunming Institute of Zoology, Chinese Academy of Sciences, 32 Jiaochang Donglu, Kunming 250223, Yunnan, China; Email: unknown.
authors.forename: Jing
authors.initials: J
authors.lastname: Che
authors.affiliation: State Key Laboratory of Genetic Resources and Evolution, and Yunnan Laboratory of Molecular Biology of Domestic Animals, Kunming Institute of Zoology, Chinese Academy of Sciences, 32 Jiaochang Donglu, Kunming 250223, Yunnan, China Centre for Biodiversity and Conservation Biology, Royal Ontario Museum, 100 Queen's Park, Toronto, Canada M5S; Email: unknown.
authors.forename: Robert W
authors.initials: RW
authors.lastname: Murphy
authors.affiliation: State Key Laboratory of Genetic Resources and Evolution, and Yunnan Laboratory of Molecular Biology of Domestic Animals, Kunming Institute of Zoology, Chinese Academy of Sciences, 32 Jiaochang Donglu, Kunming 250223, Yunnan, China. Laboratory for Conservation and Utilization of Bio-resources, Yunnan University, 2 North Cuihu Road, Kunming 650091, Yunnan, China.; Email: zhangyp@mail.kiz.ac.cn.
authors.forename: Ya-Ping
authors.initials: YP
authors.lastname: Zhang
mesh_terms: D000818:Animals; D008116:Lizards / Q000145:classification / Q000235:genetics*; D010802:Phylogeny; D014744:Vietnam