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Cyrtodactylus hekouensis ZHANG, LIU, BERNSTEIN, WANG & YUAN, 2021

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Subspecies 
Common NamesE: Hekou bent-toes gecko
Chinese: 河口裸趾虎 
SynonymCyrtodactylus hekouensis ZHANG, LIU, BERNSTEIN, WANG & YUAN 2021 
DistributionChina (Daweishan National Nature Reserve, Honghe Autonomous Prefecture, Yunnan Province)

Type locality: Daweishan National Nature Reserve, Honghe Autonomous Prefecture, Yunnan Province, China  
Reproduction 
TypesHolotype: SWFU002507, adult male, collected by Yinpeng ZHANG, 07/24/2018, from Daweishan National Nature Reserve, Hekou County, Honghe Autonomous Prefecture, Yunnan Province, China.
Paratypes: SWFU001578, adult male collected by Zhiyong YUAN; SWFU002879, SWFU002880, SWFU002881, all gravid female adults collected by Zhiyong YUAN and Yinpeng ZHANG, 07.24.2018. Collected from Daweishan National Nature Reserve, Honghe Autonomous Prefecture, Yunnan Province, China 
DiagnosisDiagnosis: A moderate sized Cyrtodactylus, with a slender trunk and bent toes, C. hekouensis is distinguished from other described Cyrtodactylus species by the combined characteristics: maximum SVL 92.3 mm and TL 98.5 mm; 11–12 supralabials; 11–12 infralabials; 36–57 scale rows between the fifth supralabials; 10–13 dorsal tubercles rows; 3 postnasals on blunt and smooth front snout; precloacal-femoral pores in a continuous series of 33–39 (females with pitted scales) located under vent/cloaca and each side of thigh in both sexes; precloacal groove absent; 3/3 postcloacal tubercles; subdigital lamellae under the fourth finger 21 or 22, under the fourth toe 20–23; smooth midbody with smooth venter and tuberculate dorsal scale rows, tubercles from head to tail base; dorsal transverse. (Zhang et al. 2021)

Comparisons: Cyrtodactylus hekouensis can be differentiated from C. huongsonensis by having more ventral scale rows (68–72 vs. 41–48), and having more continuous precloacal-femoral pores (continuous 33–39 vs. 6–8 precloacal plus in 15–17 femoral pores in separate).
C. hekouensis can be distinguished from C. sonlaensis by having presenting precloacal-femoral pores in females (absent in C. sonlaensis).
C. hekouensis can be distinguished from C. otai by having presenting femoral pores (absent in C. otai).
C. hekouensis can be distinguished from C. bobrovi by having more precloacal-femoral pores (33–39 vs. 5 in males and absent in females), and numbers of postcloacal tubercles (3/3 vs. 1/1+2/3).
C. hekouensis can be differentiated from C. jaegeri by having fewer postcloacal tubercles (3/3 vs. male 5/6), and dorsal patterns (bilaterally symmetrical patterns vs. wide bands).
C. hekouensis can be differentiated from C. puhuensis by having more ventral scale rows (68–72 vs. 36), and having femoral pores (absent in C. puhuensis).
C. hekouensis can be differentiated from C. soudthichaki by having fewer postcloacal tubercles (3/3 vs. 4/4–5/5); more precloacal-femoral pores (33–39 vs. 29); and dorsal body patterns (bilaterally symmetrical patterns vs. 5 transverse bands).
C. hekouensis can be distinguished from C. soni by different formations of precloacal-femoral pores (continuous 33–39 vs. males 6/7 precloacal+6–8 femoral, separate).
C. hekouensis can be distinguished from C. taybacensis by having more ventral scale rows (68–72 vs. 30–38), and more precloacalfemoral pores (33–39 vs. males 11–13+females 5/15 pitted+femoral absent).
C. hekouensis can be differentiated from C. houaphanensis by having more ventral scale rows (68–72 vs. 35); more precloacal-femoral pores (33–39 vs. 6+femoral absent); and more postcloacal tubercles (3/3 vs. 2/2).
C. hekouensis can be differentiated from C. ngoiensis by having more precloacal-femoral pores (33–39 vs. males 7 precloacal+14 femoral+female absent).
C. hekouensis can be distinguished from C. vilaphongi by having more ventral scale rows (68–72 vs. 34–36); more postcloacal tubercles (3/3 vs. 2/2); existence of precloacal-femoral pores (continuous pores 33–39 vs. precloacal pore unknown in male and absent in female).
C. hekouensis can be distinguished from C. martini by having more postcloacal tubercles (3/3 vs. 2/2); more ventral scale rows (68–72 vs. 39–43); and more precloacal-femoral pores (continuous pores 33–39 vs. 4 precloacal pores and femoral absent).
C. hekouensis can be distinguished from C. wayakonei by having more precloacal-femoral pores (continuous pores 33–39 vs. 6–8); more postcloacal tubercles (3/3 vs. 2/2); and by having different dorsal banded patterns (bilaterally symmetrical vs. reticulated). (Zhang et al. 2021)

Color in life: Coloration in live animals can be described as follows: light, yellow brown coloration with large blotches on dorsal surface of head, neck, dorsal, extremities and tail, head color slightly lighter; wide dark brown band starts from nasal and crosses eye; five irregular bands on dorsal, patterns on dorsal are generally large, and bilaterally symmetrical; some small irregular dorsal patterns present in between those bands, closed to belly; light whitish pink belly; five dark brown irregular transversal bands on tail completely encircled, with regenerated tail tip; light whitish gray tail venter. (Zhang et al. 2021) 
Comment 
EtymologyThe species is named after the county of the type locality (“Hekou”= 河口in Chinese). 
References
  • 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
  • Zhang Y. P., Liu X. L., Bernstein J., Wang J., Yuan Z. Y. 2021. New Species of Cyrtodactylus (Squamata: Gekkonidae) from the Karst Forests of Daweishan National Nature Reserve, Yunnan, China. Asian Herpetological Research 12 (3): 261-270 - get paper here
 
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