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Gekko nicobarensis (DAS & VIJAYAKUMAR, 2009)

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Subspecies 
Common NamesE: Nicobar gliding gecko 
SynonymPtychozoon nicobarensis DAS & VIJAYAKUfMAR 2009
Ptychozoon kuhli — DAS 1997
Ptychozoon nicbarense — GRISMER et al. 2018: 210 (in error)
Gekko (Ptychozoon) nicobarensis — WOOD et al. 2019
Gekko (Ptychozoon) nicobarensis — WOOD et al. 2020 
DistributionIndia (Nicobar Islands)

Type locality: "Nicobars" (= islands of the Nicobar Archipelago, Bay of Bengal, India)  
Reproductionoviparous (not imputed, fide Zimin et al. 2022) 
TypesHolotype: ZSI 2603, adult male, Major A. R. Anderson, Indian Medical Service, date of collection unknown, and collection was made presumably in the late 1800s. 
DiagnosisDiagnosis: A large species of Ptychozoon (reaching SVL 100.3 mm), diagnosable from congeneric species in showing the following combination of characters: dorsum with a tan vertebral stripe, lacking dark transverse bars; supranasals in contact; cutaneous expansions on sides of head; absence of predigital notch in preantebrachial cutaneous expansion; imbricate parachute support scales; four irregular rows of low, rounded enlarged scales on dorsum; 20–29 scales across widest portion of tail terminus; three indistinct chevrons on dorsum; 7–11 pairs of preanal pores; femoral pores absent; tail with an expanded terminal flap and weak lobe fusion at proximal border of tail terminus. 
Comment 
EtymologyLatin implying an inhabitant of the Nicobar Islands. 
References
  • Chandramouli SR, Gokulakrishnan G, Sivaperuman C, Grismer LL. 2021. A new species of the genus Gekko Laurenti, 1768 (Squamata: Gekkonidae) from the Nicobar Archipelago, with an overview of congeners from the Andaman and Nicobar Islands. Amphibian & Reptile Conservation 15(1) [Taxonomy Section]: 108–125 (e276) - get paper here
  • Chandramouli, S.R. 2022. Diversity and distribution of gekkonids of the Andaman & Nicobar Islands: An overview of past studies to the present scenario, with an updated checklist and future prospects Reptile Rap #226, In: Zoo’s Print 37(9): 03–10 - get paper here
  • Das, I. & Vijayakumar, S.P. 2009. New species of Ptychozoon (Sauria: Gekkonidae) from the Nicobar Archipelago, Indian Ocean. Zootaxa 2095: 8–20 - get paper here
  • 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
  • Mohan, Ashwini Venkatanarayana 2020. An update to species distribution records of geckos (Reptilia: Squamata: Gekkonidae) on the Andaman and Nicobar Islands, Bay of Bengal. Herpetology Notes 13: 631-637 - get paper here
  • SUMONTHA, MONTRI; OLIVIER S.G. PAUWELS, KIRATI KUNYA, CHAIWAT LIMLIKHITAKSORN, SIRICHAI RUKSUE, APIRAT TAOKRATOK, MICHEL ANSERMET & LAWAN CHANHOME 2012. A new species of Parachute Gecko (Squamata: Gekkonidae: genus Ptychozoon) from Kaeng Krachan National Park, western Thailand. Zootaxa 3513: 68–78 - get paper here
  • Wood Jr, Perry L.; Xianguang Guo, Scott L. Travers, Yong-Chao Su, Karen V. Olson, Aaron M. Bauer, L. Lee Grismer, Cameron D. Siler, Robert G. Moyle, Michael J. Andersen, Rafe M. Brown 2019. Parachute geckos free fall into synonymy: Gekko phylogeny, and a new subgeneric classification, inferred from thousands of ultraconserved elements. bioRxiv 717520 [preprint] - get paper here
  • Wood, P. L., Guo, X., Travers, S. L., Su, Y. C., Olson, K. V., Bauer, A. M., Grismer, L. L., Siler, C. D., Moyle, R. G., Andersen, M. J. and Brown, R. M. 2020. Parachute geckos free fall into synonymy: Gekko phylogeny, and a new subgeneric classification, inferred from thousands of ultraconserved elements. Molecular Phylogenetics and Evolution 146: 106731 [corrigendum: MPE 164: 107255] - get paper here
  • Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton 2022. A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 00, 1–16 - get paper here
 
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