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Cyrtodactylus phumyensis OSTROWSKI, DO, LE, NGO, PHAM, NGUYEN, NGUYEN & ZIEGLER, 2020

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Subspecies 
Common NamesE: Phu My Bent-toed Gecko
Vietnamese: Thạch sùng ngón phù mỹ 
SynonymCyrtodactylus phumyensis OSTROWSKI, DO, LE, NGO, PHAM, NGUYEN, NGUYEN & ZIEGLER 2020 
DistributionVietnam (Binh Dinh)

Type locality: near Chanh Dao Village, My Tho Commune (14o23.212’N, 109o14.982’E, elevation: 180 m asl.), Phu My District, Binh Dinh Province, southern Vietnam  
Reproduction 
TypesHolotype. IEBR 4577 (Field No. BD2016.163), adult male, collected by Dang Trong Do and Tan Van Nguyen on 15 August 2016.
Paratypes. ZFMK 103153 (Field No. BD2016.162), adult male, IEBR 4578 (Field No. BD2016.165), adult male, IEBR 4579 (Field No. BD2016. 169), adult female, same data as the holotype. 
DiagnosisDiagnosis. The new species can be distinguished from other members of the genus Cyrtodactylus by a combination of the following characters: size small (SVL up to 66.8 mm); two internasals; dorsal tubercle rows 18 or 19 at midbody; ventral scale rows 33–41; ventrolateral folds slightly developed; each thigh with 5–7 enlarged femoral scales; femoral pores absent in males and female; a series of 5–7 precloacal pores plus a pitted, enlarged precloacal scale in males; 6 pitted, enlarged precloacal scales in female; paravertebral tubercles 20–23; lamellae under toe IV 18–21; subcaudal scales small, not transversely enlarged; two irregular dark longitudinal stripes in the shoulder region.

Sexual dimorphism and variation. The female differs from male specimens in the absence of hemipenial swellings at the tail base. The males have 5–7 precloacal pores (versus 6 pitted scales in the female), which is absent in the female. For morphological variation see Table 1, and for color pattern variation see Figs. 2–7. Paratype ZFMK 103153 has a neckband which is interrupted on the right side. The complete, original tail is longer than snout-vent length and bears 13 transverse bands, which converge ventrally only on the distal half of the tail. The paratype IEBR 4578 has light brownish dorsum with 5 transverse bands. Paratype IEBR 4579 has a continuous neckband and three dorsal transverse bands and the longitudinal stripes at the shoulder region are separated from the postocular stripes.

Comparisons. We compared the new species with its congeners based on examination of specimens and data obtained from the literature (Ziegler et al. 2002; Nguyen et al. 2006; Heidrich et al. 2007; Orlov et al. 2007; Nazarov et al. 2008; Ngo 2008; Ngo et al. 2008; Ngo & Bauer 2008; Rösler et al. 2008; Ngo et al. 2010; Ngo & Chan 2010; Ngo & Grismer 2010; Ziegler et al. 2010; Luu et al. 2011; Ngo & Chan 2011; Nazarov et al. 2012; Ngo & Grismer 2012; Ngo 2013; Ziegler et al. 2013; Phung et al. 2014; Nguyen et al. 2013, 2014, 2015, 2017a, b; Grismer et al. 2015; Le et. al. 2016; Grismer et al. 2017; Luu et al. 2017; Ngo et al. 2017; Nguyen et al. 2017; Pauwels et al. 2018; Murdoch et al. 2019; Pham et al. 2019). The new species can be distinguished from all other known species of Cyrtodactylus by morphological characters (see Tables 2–8).
In comparison with Vietnamese congeners Cyrtodactylus phumyensis sp. nov. is distinguished from C. badenensis Nguyen, Orlov & Darevsky, C. bichnganae Ngo & Grismer, C. caovansungi Orlov, Quang, Nazarov, Ananjeva & Nguyen, C. condorensis (Smith 1921), C. cucphuongensis Ngo & Onn, C. eisenmanae Ngo, C. grismeri Ngo, C. hontreensis Ngo, Grismer & Grismer, C. huongsonensis Luu, Nguyen, Do & Ziegler, C. intermedius (Smith 1917), C. kingsadai Ziegler, Phung, Le & Nguyen C. leegrismeri Chan & Norhayati, C. nigriocularis Nguyen, Orlov & Darevsky, C. phongnhakebangensis Ziegler, Rösler, Herrmann & Thanh, C. phuquocensis Nguyen, Le, Tran, Orlov, Lathrop Macculoch, Le, Jin, Nguyen, Nguyen, Hoang, Che, Murphy & Zhang, C. puhuensis Nguyen, Yang, Le, Nguyen, Orlov, Hoang, Nguyen Jin, Rao, Hoang, Che, Murphy & Zhang, C. roesleri Ziegler, Nazarov, Orlov, Nguyen, Vu, Dang, Dinh & Schmitz, C. septimontium Murdoch, Grismer, Wood, Neang, Poyarkov, Ngo, Nazarov, Aowphol, Pauwels, Nguyen & Grismer, C. soni Le, Nguyen, Le & Ziegler, C. sonlaensis Nguyen, Pham, Ziegler, Ngo & Le, C. takouensis Ngo & Bauer and C. taybacensis Pham, Le, Ngo, Ziegler & Nguyen by the lack of transversely enlarged subcaudals as in aforementioned species. Cyrtodactylus phumyensis sp. nov. differs from C. bobrovi Nguyen, Le, Van Pham, Ngo, Hoang, The Pham & Ziegler, C. chauquangensis Hoang, Orlov, Ananjeva, Johns, Hoang & Dau, C. cryptus Heidrich, Rösler, Vu, Böhme & Ziegler, C. gialaiensis Luu, Dung, Nguyen, Le & Ziegler and C. otai Nguyen, Le, Van Pham, Ngo, Hoang, The Pham & Ziegler, C. pseudoquadrivirgatus Rösler, Nguyen, Vu, Ngo & Ziegler and C. taynguyenensis Nguyen, Le, Tran, Orlov, Lathrop Macculoch, Le, Jin, Nguyen, Nguyen, Hoang, Che, Murphy & Zhang by the presence of enlarged femoral scales (versus absence of enlarged femoral scales). Cyrtodactylus phumyensis sp. nov. differs from C. huynhi Ngo & Bauer by the absence of femoral pores (versus presence of femoral pores).
Cyrtodactylus phumyensis sp. nov. differs from C. bidoupimontis Nazarov, Poyarkov, Orlov, Phung, Nguyen, Hoang & Ziegler by its smaller size (SVL of 63.5–66.8 versus 74.0–86.3 mm), the lower number of enlarged femoral scales (5–7 versus 8–10), the presence of one pitted, enlarged precloacal scale in males (versus absent), the presence of pitted precloacal scales in female (6 versus absent) and by the different dorsal color pattern (striped neck, dorsum anteriorly irregularly spotted and posteriorly banded versus irregular transverse bands with light borders). Cyrtodactylus phumyensis sp. nov. differs from C. bugiamapensis Nazarov, Poyarkov, Orlov, Phung, Nguyen, Hoang & Ziegler by the smaller number of precloacal pores (5–7 versus 7–11), the presence of one pitted, enlarged precloacal scale in males (versus absent) and the different dorsal color pattern (striped neck, dorsum anteriorly irregularly spotted and posteriorly banded versus irregular spots forming transverse bands). Cyrtodactylus phumyensis sp. nov. differs from C. cattienensis Geissler, Nazarov, Orlov, Böhme, Phung, Nguyen & Ziegler by the presence of one pitted, enlarged precloacal scale in males (versus absent), the presence of pitted precloacal scales in female (6 versus absent) and by the different dorsal color pattern (striped neck, dorsum anteriorly irregularly spotted and posteriorly banded versus irregular dark brown transverse bands). Cyrtodactylus phumyensis sp. nov. differs from C. dati Ngo by its lower number of ventral scale rows (33–40 versus 42–48), the presence of one pitted, enlarged precloacal scale in males (versus absent) and by the different dorsal color pattern (striped neck, dorsum anteriorly irregularly spotted and posteriorly banded versus irregular dark blotched). Cyrtodactylus phumyensis sp. nov. differs from C. irregularis (Smith) by its smaller size (SVL of 63.5–66.8 versus 72.0–86.0 mm), the lower number of enlarged femoral scales (5–7 versus 7–8), the presence of one pitted, enlarged precloacal scale in males (versus absent) and by the different dorsal color pattern (striped neck, dorsum anteriorly irregularly spotted and posteriorly banded versus transverse bands with uneven margins in white binding, some bands can fall into separated spots). Cyrtodactylus phumyensis sp. nov. differs from C. martini Ngo by its smaller size (SVL of 63.5–66.8 versus 64.4–96.2 mm), the smaller number of enlarged femoral scales (5–7 versus 14–18), the higher number of precloacal pores in males (5–7 versus 4), the presence of one pitted, enlarged precloacal scale in males (versus absent), the presence of pitted precloacal scales in female (6 pitted versus absent) and by the different dorsal color pattern (striped neck, dorsum anteriorly irregularly spotted and posteriorly banded versus irregular bands). Cyrtodactylus phumyensis sp. nov. differs from C. phuocbinhensis Nguyen, Le, Tran, Orlov, Lathrop, Macculoch, Le, Jin, Nguyen, Nguyen, Hoang, Che, Murphy & Zhang by its bigger size (SVL of 63.5–66.8 versus 46.0–60.4 mm), the lower number of ventral scale rows (33–40 versus 43–47), the presence of one pitted, enlarged precloacal scale in males (versus absence), the presence of pitted, enlarged precloacal scales in female (6 pitted versus absent), and by the different dorsal color pattern (striped neck, dorsum anteriorly irregularly spotted and posteriorly banded versus stripes). Cyrtodactylus phumyensis sp. nov. differs from C. sangi Pauwels, Nazarov, Bobrovi & Poyarkov by its bigger size (SVL of 63.5–66.8 versus 49.9–56.3 mm), the presence of one pitted, enlarged precloacal scale in males (versus absent) and by the different dorsal color pattern (striped neck, dorsum anteriorly irregularly spotted and posteriorly banded versus irregular bands and pattern). Cyrtodactylus phumyensis sp. nov. differs from C. yangbayensis Ngo & Chan by its smaller size (SVL of 63.5–66.8 versus 78.5–92.3 mm), the presence of one pitted, enlarged precloacal scale in males (versus absent), the higher number of sub-digital lamellae under the fourth toe (18–21 versus 15–17) and by the different dorsal color pattern (striped neck, dorsum anteriorly irregularly spotted and posteriorly banded versus irregular rows of narrow, dark brown bands) and from C. ziegleri Nazarov, Orlov, Nguyen & Ho by its smaller size (SVL of 63.5–66.8 versus 84.6–93.0 mm), the lower number of enlarged femoral scales (5–7 versus 8–10), the presence of one pitted, enlarged precloacal scale in males (versus absent) and by the different dorsal color pattern (striped neck, dorsum anteriorly irregularly spotted and posteriorly banded versus dark brown transverse irregular bands).
Morphologically, Cyrtodactylus phumyensis sp. nov. resembles C. cucdongensis Schneider, Phung, Le, Nguyen & Ziegler. However, the new species can be distinguished from the latter by the presence of one pitted, enlarged precloacal scale in males (versus absent), the number of internasals (2 versus 1), the higher number of transverse tail bands (13 versus 7) and by the different dorsal color pattern (striped neck, anteriorly dorsum irregularly spotted and posteriorly banded versus irregular transverse bands, two of which consist of spots). 
Comment 
Etymology Specific epithet “phumyensis” is a toponym in reference to the type locality of the species. 
References
  • OSTROWSKI, SABRINA; DANG TRONG DO, MINH DUC LE, HANH THI NGO, CUONG THE PHAM, TRUONG QUANG NGUYEN, VAN THI HONG NGUYEN, THOMAS ZIEGLER 2020. A new species of Cyrtodactylus (Squamata: Gekkonidae) from southern Vietnam. Zootaxa 4789 (1): 171–203 - get paper here
 
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