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Ptychozoon popaense GRISMER, WOOD, THURA, M GRISMER, BROWN & STUART, 2018

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos) 
Subspecies 
Common NamesMt. Popa Parachute Gecko 
SynonymPtychozoon popaense GRISMER, WOOD, THURA, M GRISMER, BROWN & STUART 2018 
DistributionMyanmar (Mt. Popa, Mandalay Region)

Type locality: Yay Su camp, 16 km northeast of Kyauk-pa-taung Town, Kyauk-pa-taung Township, Mt. Popa, Mandalay Region, Myanmar (20.88331°N, 95.26638°E, 629 m elevation).  
Reproduction 
TypesHolotype. LSUHC 13508, adult male, collected by Myint Kyaw Thura on 27 May 2017. 
DiagnosisDiagnosis. Ptychozoon popaense sp. nov. can be differentiated from all other species of Ptychozoon based on having the unique combination of separated supranasals; presence of an infra-auricular flap; dorsal and caudal tubercles absent; 32–36 enlarged ventral scales; enlarged femorals absent; 21 enlarged, pore-bearing precloacals in the male and 12 dimpled precloacal scales in the female; 13 or 14 transversely enlarged subdigital lamellae under the fourth toe; 28 or 29 scales across the caudal flap; distal caudal lobes not fused into a long caudal flap; bases of 15–19 lobes fused anterior to the caudal flap; caudal lobes angling slightly posteriorly; thick, dark, postorbital stripe present; four dark, dorsal, body bands between limb insertions; irregularly shaped, with white, vertebral markings; and adults not having distinct immaculate black and white caudal bands dorsally.

Comparisons. Ptychozoon popaense sp. nov. is most closely related to P. lionotum sensu lato but differs from it by having 15–19 fused caudal lobes as opposed to 2–11; lacking as opposed to having a thick, dark, postorbital stripe; and having as opposed to lacking irregularly shaped, white, vertebral markings. From P. bannaense it differs by having 21 as opposed to 17 pore-bearing precloacal scales in males; 13 or 14 as opposed to 16 or 17 enlarged, transverse, subdigital lamellae on the fourth toe; slight as opposed to extreme posteriorly angled caudal lobes; minimal as opposed to extreme reduction in the width of the caudal lobes toward the end of the tail; and having as opposed to lacking irregularly shaped, white, vertebral markings. Combinations of other characters differentiating P. popaense sp. nov. from the other more distantly related species are presented in Table 4 in Grismer et al. 2018. 
Comment 
EtymologyNamed after the type locality on Mt. Popa. 
References
  • GRISMER, L. LEE; PERRY L. JR. WOOD, MYINT KYAW THURA, MARTA S. GRISMER, RAFE M. BROWN, BRYAN L. STUART 2018. Geographically structured genetic variation in Ptychozoon lionotum (Squamata: Gekkonidae) and a new species from an isolated volcano in Myanmar. Zootaxa 4514 (2): 202–214 - get paper here
 
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