title: A new species of Dixonius (Squamata: Gekkonidae) from Phu Quy Island, Vietnam.
abstract: We describe a new species of Dixonius on the basis of five specimens from Phu Quy Island, Binh Thuan Province, in southern Vietnam. The new species can be distinguished from congeners based on molecular and morphological differences. Diagnostic features are: small size (SVL up to 44 mm); 7 or 8 supralabials; 11 or 12 rows of keeled tubercles on dorsum; 21-23 ventral scale rows; 5 or 6 precloacal pores in males; a canthal stripe running from rostrum through the eye and terminating behind the head; second pair of postmentals about one third to one half size of first pair; ground color of dorsum brown, with one or two rows of light yellow or orange spots in one or two rows along flanks, and irregular bands or a reticulated network of dark marks on dorsum. This is the fifth species of Dixonius known to occur in Vietnam.
authors.affiliation: AG Zoologischer Garten Köln, Riehler Straße 173, D-50735 Köln, Germany.; Email: andreasbotov@googlemail.com.
authors.forename: Andreas
authors.initials: A
authors.lastname: Botov
authors.affiliation: Dong Khoi 9A, Tam Hiep, Bien Hoa, Dong Nai Province, Vietnam.; Email: pmytrung@gmail.com.
authors.forename: Trung My
authors.initials: TM
authors.lastname: Phung
authors.affiliation: Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam.; Email: nqt2@yahoo.com.
authors.forename: Truong Quang
authors.initials: TQ
authors.lastname: Nguyen
authors.affiliation: Department of Biology, Villanova University, 800 Lancaster Avenue, Villanova, Pennsylvania 19085, USA.; Email: aaron.bauer@villanova.edu.
authors.forename: Aaron M
authors.initials: AM
authors.lastname: Bauer
authors.affiliation: Department of Biology, Villanova University, 800 Lancaster Avenue, Villanova, Pennsylvania 19085, USA.; Email: aaron.bauer@villanova.edu.
authors.forename: Ian G
authors.initials: IG
authors.lastname: Brennan
authors.affiliation: AG Zoologischer Garten Köln, Riehler Straße 173, D-50735 Köln, Germany. Zoological Institute, University of Cologne, Zülpicher Strasse 47b, D-50674 Cologne, Germany; Email: ziegler@koelnerzoo.de.
authors.forename: Thomas
authors.initials: T
authors.lastname: Ziegler
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D049628:Body Size; D017753:Ecosystem; D005260:Female; D062312:Islands; D008116:Lizards / Q000033:anatomy & histology / Q000145:classification* / Q000254:growth & development; D008297:Male; D009929:Organ Size; D014744:Vietnam