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Acanthosaura tongbiguanensis LIU & RAO, 2019

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Higher TaxaAgamidae (Draconinae), Sauria, Iguania, Squamata (lizards)
Common NamesChinese: 铜壁关棘蜥 
SynonymAcanthosaura tongbiguanensis LIU & RAO 2019
Acanthosaura lepidogaster — ZHAO et al. 1999: 82–85
Acanthosaura lepidogaster — YANG & RAO 2008: 186–187 
DistributionChina (Yunnan)

Type locality: Tongbiguan Township (24°36'51.24"N, 97°35'1.88"E, 1170.24 m elevation), Yingjiang County, Dehong Autonomous Prefecture, Yunnan, China.  
TypesHolotype. KIZ L201804, an adult male, 22:18 02 Sept 2018, leg. Shuo Liu.
Paratypes. KIZ L201801, an adult male, 22:53 01 Sept 2018, leg. Shuo Liu, same locality as holotype; KIZL201802 and KIZ L201803, two juveniles, 21:00–22:00 02 Sept 2018, leg. Shuo Liu, same locality as holotype; KIZ L201805, adult female, 22:40 02 Sept 2018, leg. Shuo Liu, same locality as holotype; 74I0039 and 74I0040, two gravid females, old specimens in the specimen collection room of Kunming Institute of Zoology, Chinese Academy of Sciences, Aug 1974, leg. Longchuan County, Dehong Autonomous Prefecture, Yunnan, China. 
DiagnosisDiagnosis. A medium-sized (maximum SVL 115.6 mm) agamid lizard with two pairs of spines: postorbital (supraciliary) spines and spines on occiput between tympanum and nuchal crest; tympanum naked; moderately developed gular pouch; scales on flanks randomly intermixed with medium and large scales; nuchal crest
present and strongly developed; diastema between the nuchal and dorsal crests present; dorsal crest slightly developed, composed of enlarged, pointed scales beginning at shoulder region and decreasing regularly in size; tail 1.56–1.85 times SVL; black nuchal collar present; black eye patch present; black oblique folds anterior to the fore limb insertions present.
The new species can be separated from all congeners by having different numbers of subdigital lamellae on the fourth finger (19–21) and toe (25–28), and a different shape of the black eye patch, that extends from posterior margin of nostrils through orbit posteriorly and downwards beyond the posterior end of the tympanum but neither meeting the diamond shaped black nuchal collar on nape nor black oblique humeral fold. 
EtymologyThe name refers to Tongbiguan Nature Reserve, the locality where the new species was found. 
  • Kwet, A. 2020. Liste der im Jahr 2019 neubeschriebenen Reptilien. Elaphe 2020 (3): 44-67
  • Liu S, Hou M, Mo M, Rao D 2020. A new species of the genus Acanthosaura (Squamata, Agamidae) from Yunnan, China, with comments on its conservation status. ZooKeys 959: 113-135 - get paper here
  • Liu S, Rao D 2019. A new species of the genus Acanthosaura from Yunnan, China (Squamata, Agamidae). ZooKeys 888: 105-132 - get paper here
  • Wang K, Lyu ZT, Wang J, Qi S, Che J 2022. Updated Checklist and Zoogeographic Division of the Reptilian Fauna of Yunnan Province, China. Biodiversity Science 30 (4): 21326, 1–31 - get paper here
  • Wang, Kai; Jinlong Ren, Hongman Chen, Zhitong Lyu, Xianguang Guo Ke Jiang, Jinmin Chen, Jiatang Li, Peng Guo, Yingyong Wang, Jing Che 2020. The updated checklists of amphibians and reptiles of China. Biodiversity Science 28 (2): 189-218 - get paper here
  • Yang DT, Rao DQ. 2008. Amphibia and Reptilia of Yunnan. Kunming: Yunnan Publishing Group Corporation, 1-411. (in Chinese)
  • Zhao E. M., Zhao K., Zhou K. Y. 1999. Fauna Sinica, Reptilia, Vol. 2, Squamata, Lacertilia. [In Chinese] Beijing: Science Press, 394 pp
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