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Hemiphyllodactylus xiengkhoangensis LUU, SITTHIVONG, HOANG, HA, HA, XAYASITH, ZIEGLER, GRISMER, 2025

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Subspecies 
Common NamesE: Xiengkhouang Slender Gecko 
SynonymHemiphyllodactylus xiengkhoangensis LUU, SITTHIVONG, HOANG, HA, HA, XAYASITH, ZIEGLER, GRISMER 2025: 225 
DistributionLaos (Xiengkhouang)

Type locality: Phouvieng Village, Khuon District, Xiengkhouang Province, Laos (19°14'39"N 103°35'47"E; 1180 m in elevation).  
Reproduction 
TypesHolotype. Adult male VNUF R.2025.02 (Field no. KNGAN.XK.02) collected on 19 May 2023 at 19:45 hrs by Saly Sitthivong. Paratypes. Adult female VNUF R.2025.03 (Field no. KNGAN.XK.03 and adult male NUOL R.2025.01 (Field no. KNGAN.XK.01) bear the same collection data as the holotype. 
DiagnosisDiagnosis: Hemiphyllodactylus xiengkhouangensis sp. nov. can be separated from all other species of Hemiphyllodactylus by possessing the unique combination of having a maximum SVL of 41.7 mm; chin scales 8–10; postmentals enlarged; circumnasal scales three or four; intersupranasals (=postrostrals) two or three; supralabials 9–12; infralabials 8–11; dorsal scales 16–20; ventral scales 9–11; subdigital lamellae on the first finger four or five; femoral and precloacal pores 20 or 21, in a continuous row in males and 12 pitted scales in the female; no plate-like subcaudal scales; dorsal surfaces of head, body, and limbs light-brown, heavily mottled with darker markings; top of head overlain with a faint, irregular dark pattern; dark stripe extends from the external nares through the eye to the region just posterior of forelimb insertion on the body; ventral surfaces of the trunk and limbs uniformly pale-yellow with darker lateral areas; ventral surface of original tail orange with ventrolaterally dark pigmentation. Three selective color pattern characters (DorBodPatrn, VenBodPatrn, and VenTalPatrn as mentioned above) are scored across closely related Hemiphyllodactylus species in Tables 3 and 4. (Luu et al. 2025)


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Comment 
EtymologyNamed after the type locality of Xiengkhouang Province, Laos 
References
  • Luu, V.Q., Sitthivong, S., Hoang, T.T., Ha, H.B., Ha, H.V., Xayasith, S., Ziegler, T. & Grismer, L.L. 2025. Two more new species of Hemiphyllodactylus Bleeker, 1860 (Squamata: Gekkonidae) from Laos and Vietnam identified using an integrative taxonomic approach. Zootaxa, 5686 (2), 211–238 - get paper here
 
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