Dixonius taoi BOTOV, PHUNG, NGUYEN, BAUER, BRENNAN & ZIEGLER, 2015
Can you confirm these amateur observations of Dixonius taoi?
|Higher Taxa||Gekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)|
|Synonym||Dixonius taoi BOTOV, PHUNG, NGUYEN, BAUER, BRENNAN & ZIEGLER 2015|
|Distribution||Vietnam (Binh Thuan: Phu Quy Island)|
Type locality: Phu Quy Island, Phu Quy District, Binh Thuan Province, Vietnam
|Types||Holotype: IEBR A.2014.26 collected on 2nd of June 2013 by Trung My Phung.|
Paratypes: CAS 257300, IEBR A.2014.27, VNMN A.2014.4, ZFMK 96680, the same data as the holotype.
|Comment||Diagnosis. A small gecko with up to 44 mm SVL; 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 at back of head; lateral second pair of postmentals about one third to one half size of first pair; brown dorsal ground color with light yellowish/orange spots in one or two rows along flanks, and irregular bands or a reticulated network of dark marks on dorsum.|
Comparisons. The new species from Phu Quy differs from all known Dixonius species as follows: from D. aaronbaueri by having more ventral scale rows at midbody (21–23 versus 18–19 in D. aaronbaueri) and different color pattern (dorsum brown with light yellowish/orange spots and dark irregular bands versus unpatterned in D. aaronbaueri); from D. hangseesom by having fewer ventral scale rows at midbody (21–23 versus 22–26 in D. hangseesom), fewer precloacal pores in males (5–6 versus 6–8 in D. hangseesom), coloration of tail the same as the dorsum (versus orange tail in D. hangseesom); from D. melanostictus in having a smaller size (max. SVL 44 mm versus 50 mm in D. melanostictus), fewer supralabials (7–8 versus 9 in D. melanostictus), fewer precloacal pores in males (5–6 versus 9 in D. melanostictus), and canthal stripe continues behind orbit to back of head (versus canthal stripe extending along flanks in D. melanostictus); from D. siamensis in having a smaller size (max. SVL 44 mm versus 57 mm in D. siamensis), the presence of a distinct canthal stripe (absent in D. siamensis); from D. vietnamensis in having more ventral scale rows at midbody (21–23 versus 20 in D. vietnamensis), fewer enlarged dorsal scale rows at midbody (11–12 versus 16 in D. vietnamensis), and the presence of one or two irregular rows of yellowish marks running from head along flanks and meeting at base of tail in adults (versus scattered orange tubercles in D. vietnamensis in juveniles only) (Tab. 5 in Botov et al. 2015).
|Etymology||The new species is named in honor of our colleague and friend Dr. Nguyen Thien Tao from the Vietnam National Museum of Nature in Hanoi, in recognition of his numerous and groundbreaking scientific contributions towards a better understanding of the herpetofauna of Vietnam.|
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