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Diploderma iadinum (WANG, JIANG, SILER & CHE, 2016)

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Higher TaxaAgamidae (Draconinae), Sauria, Iguania, Squamata (lizards)
Subspecies 
Common NamesEnglish: Emerald Mountain Dragon
Chinese: Fei Cui Pan Xi; 翡翠龙蜥 
SynonymJapalura iadina WANG, JIANG, SILER & CHE in WANG et al. 2016
Japalura flaviceps — ZHAO et al. 1999: 293-298
Japalura flaviceps — YANG & RAO 2008: 200-201; 8
Japalura flaviceps — XU & ZHANG 2011: 202-203
Japalura splendida — XU & ZHANG 2011: 202-203
Japalura cf. flaviceps — MANTHEY et al. 2012
Diploderma iadinum — WANG et al. 2018 
DistributionChina (NW Yunnan)

Type locality: Lancang Valley at Ninong, Deqin, northwest Yunnan, China (28.370255° N, 98.865287° E, 2062 m elevation  
Reproduction 
TypesHolotype: KIZ 019321, adult male, collected by Kai WANG on 27 May 2015.
Allotopotype: KIZ 09398, adult female. Collected by Da-Hu ZOU. Specimen shares the same locality and collection infor- mation as the holotype.
Paratopotypes: KIZ 09401-03, 019322, 019323, 019325-28, all adult males. Collected by Kai WANG, Ke JIANG, and Da-Hu ZOU. 
DiagnosisDiagnosis: Following Inger’s (1960) definition of the genus, the new species is assigned to Japalura based on a number of diagnostic characters, including: (1) dorsal scales unequal in size; (2) enlarged crest scales present; (3) gular pouch pre- sent; (4) lateral fold of skin in axilla–groin region present; (5) supraciliary scales greatly imbricate; (6) head relatively long, flat; (7) tail long, slender; (8) tail cylindrical in shape; and (9) precloacal and femoral pores absent.
The new species differs from all congeners by a combination of the following morphological characters: (1) gular fold present; (2) distinct gular pouch present; (3) relative hind-limb length moderate HLL/SVL 69.6%-80.1%; (4) relative tail length moderate TAL/SVL 173%-198%; (5) F4S 15-17; (6) T4S 19-25; (7) MD 35-46; (8) three lateral rows of enlarged scales pre- sent on the dorsal surface of the body parallel to the dorsal crest; (9) nuchal and dorsal crests moderately raised on skin folds; (10) nuchal and dorsal crests relatively low and discon- tinuous in males; (11) dorsal and lateral surfaces of body emerald green in males, yellowish brown speckled with large, light yellow scales in females; (12) tail yellowish green in males, brownish in females; (13) ventral surface of body bluish or whitish gray, sometimes with black speckles, in males, uniform yellow in females; (14) two smooth-edged, light-green, dorso- lateral stripes present in males; (15) vermiculate stripes on ventral surface of head present, distinct, blackish blue in males, black in females; (16) gular region dark blue in males, yellow in females.


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CommentAbundance: only known from its original description and one other locality 17 km downstream of the Mekong River (Wang et al. 2019). 
EtymologyThe Latin name “iadina” means “emerald like, ” which describes the diagnostic emerald green body coloration of males of the new species. 
References
  • DENZER, WOLFGANG; ULRICH MANTHEY, PATRICK D CAMPBELL 2019. Catalogue of type specimens of the agamid lizard genus Japalura s. l. (Squamata: Agamidae: Draconinae). Zootaxa 4612 (1): 109-125 - get paper here
  • MANTHEY, ULRICH; WOLFGANG DENZER, HOU MIAN & WANG XIAOHE 2012. Discovered in historical collections: Two new Japalura species (Squamata: Sauria: Agamidae) from Yulong Snow Mountains, Lijiang Prefecture, Yunnan, PR China. Zootaxa 3200: 27–48 - get paper here
  • Meiri, Shai; Aaron M. Bauer, Allen Allison, Fernando Castro-Herrera, Laurent Chirio, Guarino Colli, Indraneil Das, Tiffany M. Doan, Frank Glaw, Lee L. Grismer, Marinus Hoogmoed, Fred Kraus, Matthew LeBreton, Danny Meirte, Zoltán T. Nagy, Cristiano d 2017. Extinct, obscure or imaginary: the lizard species with the smallest ranges. Diversity and Distributions - 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; Jing Che, Simin Lin, V Deepak, Datta-Roy Aniruddha, Ke Jiang, Jieqiong Jin, Hongman Chen, Cameron D Siler; 2018. Multilocus phylogeny and revised classification for mountain dragons of the genus Japalura s.l. (Reptilia: Agamidae: Draconinae) from Asia. Zoological Journal of the Linnean Society, , zly034, - 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
  • WANG, KAI; JINLONG REN, KE JIANG, ZHIYONG YUAN, JING CHE, CAMERON D. SILER 2017. Rediscovery of the enigmatic Mountain Dragon, Japalura yulongensis (Reptilia: Sauria: Agamidae), with notes on its natural history and conservation. Zootaxa 4318 (2): 351–363 - get paper here
  • WANG, Kai; Ke JIANG, Da-Hu ZOU, Fang YAN, Cameron D. SILER, Jing CHE 2016. Two new species of Japalura (Squamata: Agamidae) from the Hengduan Mountain Range, China. Zoological Research 37(1): 41-56, DOI: 10.13918/j.issn.2095-8137.2016.1.41 - get paper here
  • Xu J, Zhang WW. 2011. A field guide to the wildlife of Meili Snow Mountain National Park. Beijing: Encyclopedia of China Publishing House, 1-400. (In Chinese)
  • Yang DT, Rao DQ. 2008. Amphibia and Reptilia of Yunnan. Kunming: Yunnan Publishing Group Corporation, 1-411. (in Chinese)
  • Zhang, D. H. H. H. D., & Rao, N. X. D. 2022. Diversity of amphibians and reptiles in Yunnan regions of the Yunling Mountains. Biodiversity Science, 22316 - get paper here
  • 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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