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Higher TaxaAgamidae (Draconinae), Sauria, Iguania, Squamata (lizards)
Common NamesThai: Kingkakhaownaam Phuket
English: Phuket Horned Tree Agamid
French: Acanthosaure de Phuket
German: Phuket-Nackenstachler
Dutch: Phuketstekelnekagame 
Acanthosaura armata — BOETTGER 1887: 38
Acanthosaura cf. crucigera — CHAN-ARD et al. 1999: 90, left
Acanthosaura crucigera — GROSSMANN & TILLACK 2000: 30 ff
Acanthosaura crucigera — PAUWELS et al. 2000: 132–133
Acanthosaura crucigera — PAUWELS et al. 2002: 27
Acanthosaura crucigera — MANTHEY 2008: 24, 25
Acanthosaura cf. crucigera — SUMONTHA et al. 2012: 69
Acanthosaura cf. crucigera — SUMONTHA et al. 2015: 110 
DistributionSW Thailand (Phuket Island)

Type locality: Ban Bangrong (coordinates UTM UPS ca. 47 p0433130 0888891 = 08o02.465N 98o23.588E; altitude ca. 41 m asl), Thalang District, Phuket Island, Phuket Province, southwestern Thailand  
TypesHolotype: THNHM 22542, adult male (formerly Montri Sumontha’s field number MS 560). Collected by Awat Nitikul on 2 June 2008. Paratypes. Five ethanol-preserved whole individuals, one adult male (hemipenes everted) IRSNB 2681 (formerly IRSNB 15141) from Phang-Nga Wildlife Breeding Station, Muang District, Phang-Nga Province, southwestern Thailand, collected by O. S. G. Pauwels on 26 July 1998, and two adult females PSUZC RT 2012.5 and THNHM 22543 (formerly MS 559 and MS 225 respectively) and two subadult males, PSUZC RT 2012.6 and QSMI 1166 (formerly MS 558 and MS 557 respectively) from the same locality, collecting date and collector as for the holotype. 
DiagnosisDiagnosis. A medium-sized species (maximum SVL 123.5 mm) with a single long cylindrical spine above posterior margin of eye; large spine on occiput between tympanum and nuchal crest; tympanum naked, roundish, large; moderately developed gular pouch, black in females; scales on flanks randomly intermixed with medium and large scales; nuchal crest present and strongly developed; 12-17 scales in the diastema between the nuchal and vertebral crests; vertebral crest strongly developed, composed of enlarged, pointed scales beginning at shoulder region and continuing till first 6th of tail while regularly decreasing in size; tail 1.4–1.7 times SVL; black collar present; black eye patch present, extending posteriorly to reach the nuchal crest.

Comparisons to other species. See Table 2 in PAUWELS et al. 2015. 
CommentDistribution: see map in Trivalarat et al. 2020: 17 (Fig. 5). 
EtymologyThe specific epithet is an adjective in reference to Phuket Island and Phuket Range, on which the type locality lies. 
  • Kwet, A. 2016. Liste der im Jahr 2015 neu beschriebenen Reptilien. Terraria-Elaphe 2016 (3): 56-67 - 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
  • PAUWELS, OLIVIER S. G.; MONTRI SUMONTHA, KIRATI KUNYA, AWAT NITIKUL, PHAMON SAMPHANTHAMIT, PERRY L. WOOD, JR. & LEE L. GRISMER 2015. Acanthosaura phuketensis (Squamata: Agamidae), a new long-horned tree agamid from southwestern Thailand. Zootaxa 4020 (3): 473–494 - get paper here
  • Trivalairat P, Kunya K, Chanhome L, Sumontha M, Vasaruchapong T, Chomngam N, Chiangkul K 2020. Acanthosaura aurantiacrista (Squamata: Agamidae), a new long horn lizard from northern Thailand. Biodiversity Data Journal 8: e48587 - get paper here
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