Showing posts with label Author: Sumontha. Show all posts
Showing posts with label Author: Sumontha. Show all posts

Thursday, February 5, 2026

[Herpetology • 2026] Gekko dam • A New dark-colored Tokay Gecko (Squamata: Gekkonidae) from the Thai-Malay border


Gekko (Gekkodam
 Meesook, Jindamad, Toprai, Chotjuckdikul, Supmee, Suppapan, Donbundit, Sumontha & Pauwels, 2026
 
ตุ๊กแกดำ | Black Tokay Gecko  ||  DOI: doi.org/10.11646/zootaxa.5757.2.2 

Abstract
We describe Gekko dam sp. nov. based on type specimens from a limestone hill in Palian District, Trang Province, southern peninsular Thailand. The new species is also found in Satun Province, southern peninsular Thailand, and in Perlis State, northwestern Peninsular Malaysia. A member of the subgenus Gekko, it differs from all currently recognized Gekko species by the following combination of morphological characters and pattern: maximal known snout-vent length of 149.1 mm, lack of contact between nostrils and rostral, 21–24 interorbital scales between supraciliaries, 72–83 scale rows around midbody, 12–14 dorsal tubercle rows at midbody, 26–28 ventral scale rows at midbody, 22 precloacal pores in males, two postcloacal tubercles on each side of the base of the tail, 14–17 subdigital lamellae on 1st toe and 19–21 on 4th toe, a Y-shaped mark on head, white spots on head, dark grey to black dorsal background with four regular bands of contrasting white spots on dorsum between limb insertions, throat and venter white with orange patches, and a copper iris.

Reptilia, Gekko dam sp. nov., taxonomy, karst, limestone, Thai-Malay Peninsula




Gekko dam sp. nov.
ตุ๊กแกดำ

Etymology. The specific epithet dam is a noun in apposition, invariable, based on the Thai noun or adjective ดำ ("dam"), meaning black, black color, or dark, in reference to the dark color of the new species. 
We suggest the following common names: ตุ๊กแกดำ (Took-kay dam; Thai); Black Tokay Gecko (English), Gecko tokay noir (French), and Zwarte tokeh gekko (Dutch).



Worawitoo MEESOOK, Tanasak JINDAMAD, Nittaya TOPRAI, Natthaphat CHOTJUCKDIKUL, Verakiat SUPMEE, Juthamas SUPPAPAN, Nattasuda DONBUNDIT, Montri SUMONTHA and Olivier S. G. PAUWELS. 2026. Gekko (Gekkodam, A New dark-colored Tokay Gecko from the Thai-Malay border (Squamata, Gekkonidae).  Zootaxa. 5757(2); 123-143. DOI: doi.org/10.11646/zootaxa.5757.2.2 [2026-02-04]
Researchgate.net/publication/400442860_Gekko_dam_a_new_dark-colored_tokay_gecko_from_the_Thai-Malay_border


Wednesday, February 19, 2025

[Herpetology • 2025] Gekko shiva • A New limestone-dwelling Gecko (Squamata: Gekkonidae) from Sa Kaeo Province, eastern Thailand

 

Gekko (Gekkoshiva 
Pauwels, Meesook, Donbundit, Jindamad, Topai & Sumontha, 2025


Abstract
We describe Gekko shiva sp. nov. from limestone cave and hills in Khlong Hat District, Sa Kaeo Province, eastern Thailand, near the border with Cambodia. The new species, a member of the subgenus Gekko, differs from all currently recognized Gekko species by the following combination of morphological characters and pattern: maximal known snout-vent length of 131.9 mm, lack of contact between nostrils and rostral, 28 or 29 interorbital scales between supraciliaries, 80–86 scale rows around midbody, 18 dorsal tubercle rows at midbody, 35–37 ventral scale rows at midbody, 9–12 precloacal pores in males, one or two postcloacal tubercles on each side of the base of the tail, 13–15 subdigital lamellae on 1st toe and 18 or 19 on 4th toe, no Y-shaped mark on head, white spots on head, brown dorsal background with irregular bands of white spots on dorsum, yellow venter, and greenish golden iris.

Reptilia, Gekko shiva sp. nov., taxonomy, karst, limestone, cave, Cardamom Mountains




Gekko shiva sp. nov. 
ตุ๊กแกศิวะ




Olivier S. G. PAUWELS, Worawitoo MEESOOK, Nattasuda DONBUNDIT, Tanasak JINDAMAD, Nittaya TOPAI and Montri SUMONTHA. 2025. Gekko (Gekkoshiva, A New limestone-dwelling Gecko from Sa Kaeo Province, eastern Thailand (Squamata, Gekkonidae).  Zootaxa. 5588(2);  305-322. DOI: doi.org/10.11646/zootaxa.5588.2.6 

Saturday, February 15, 2025

[Herpetology • 2025] Gehyra shiva • A New limestone-dwelling Four-clawed Gecko (Squamata, Gekkonidae: Gehyra) from Sa Kaeo Province, eastern Thailand

 

Gehyra shiva
Meesook, Donbundit, Jindamad, Topai, Kunya, Suthanthangjai, Chotjuckdikul, Chonkamnord, Sumontha & Pauwels, 2025

จิ้งจกหินศิวะ  ||  DOI: doi.org/10.11646/zootaxa.5588.2.12 
 
Abstract
We describe Gehyra shiva sp. nov. from limestone cave and hills in Khlong Hat District, Sa Kaeo Province, eastern Thailand, near the border with Cambodia. The new species differs from all currently recognized Southeast Asian Gehyra by the following combination of morphological characters and dorsal color pattern: maximal known snout–vent length of 53.8 mm, 8–10 supralabials, 54–67 dorsal and 46–56 ventral scale rows around midbody, absence of skin folds on limbs, 34–37 preanofemoral pores in males in a continuous series extending along the whole length of the femur (pores absent in females), tail not to moderately widened behind vent in adults, a single row of widened subcaudals, digits and toes unwebbed, 7 or 8 divided subdigital lamellae on 4th toe, and a dorsal pattern with five regular dark brown bands between limb insertions, separated or not by pairs of large, white round paravertebral spots.

Reptilia, Gehyra shiva sp. nov., taxonomy, morphology, karst, cave



Gehyra shiva sp. nov.



Worawitoo MEESOOK, Nattasuda DONBUNDIT, Tanasak JINDAMAD, Nittaya TOPAI, Kirati KUNYA, Winai SUTHANTHANGJAI, Maneerat SUTHANTHANGJAI, Natthaphat CHOTJUCKDIKUL, Teeraphat CHONKAMNORD, Montri SUMONTHA and Olivier S. G. PAUWELS. 2025. A New limestone-dwelling Four-clawed Gecko from Sa Kaeo Province, eastern Thailand (Squamata, Gekkonidae: Gehyra).  Zootaxa. 5588(2); 381-395. DOI: doi.org/10.11646/zootaxa.5588.2.12 [2025-02-14]

Thursday, February 13, 2025

[Herpetology • 2025] Dixonius hinchangsi • A New Sandstone-dwelling Leaf-toed Gecko (Squamata: Gekkonidae: Dixonius) from Khon Kaen Province, northeastern Thailand

 
 Dixonius hinchangsi  
O. S. G. Pauwels, Das, Kunya, Sumontha, Donbundit, T. P. C. Pauwels, Sonet, Brecko & Meesook, 2025

จิ้งจกดินหินช้างสี  ||  DOI: doi.org/10.11646/zootaxa.5584.4.2  

Abstract
We describe Dixonius hinchangsi sp. nov. from a sandstone area near Hin Chang Si, Khon Kaen Province, northeastern Thailand. The new species differs from all currently recognized Dixonius by the following combination of morphological characters and pattern: maximal known snout-vent length of 50.1 mm, 12 longitudinal rows of dorsal tubercles; 30 to 34 paravertebral tubercles; 23 to 27 longitudinal rows of ventral scales across the abdomen; six to eight precloacal pores in males, no pores in females; no canthal stripe; strongly barred lips; and a spotted to uniform dorsal pattern in males and females. We provide a cranial osteological description and a phylogenetic analysis of the new species. This discovery brings the number of recognized Dixonius species to 19, among them nine species endemic to Thailand.

Reptilia, Gekkota, morphology, taxonomy, Southeast Asia, Isan


  

Dixonius hinchangsi sp. nov.




Olivier S. G. PAUWELS, Sunandan DAS, Kirati KUNYA, Montri SUMONTHA, Nattasuda DONBUNDIT, Thomas P. C. PAUWELS, Gontran SONET, Jonathan BRECKO and Worawitoo MEESOOK. 2025. A New Sandstone-dwelling Leaf-toed Gecko (Gekkonidae: Dixonius hinchangsi) from Khon Kaen Province, northeastern Thailand.  Zootaxa. 5584(4); 482-504. DOI: doi.org/10.11646/zootaxa.5584.4.2 [2025-02-11]



Saturday, September 21, 2024

[Herpetology • 2024] Cyrtodactylus panitvongi • A New Cave-dwelling Bent-toed Gecko (Squamata: Gekkonidae) from Lopburi Province, central Thailand


Cyrtodactylus panitvongi 
Pauwels, Chotjuckdikul, Donbundit, Sumontha & Meesook, 2024

 
Abstract
We describe Cyrtodactylus panitvongi sp. nov. from Tham Khao Chan (14°58’42.2”N 101°18’40.6”E), a limestone cave in Lopburi Province, central Thailand. The new species is characterized by the following combination of morphological characters and pattern: maximal known snout-vent length of 85 mm, 15–18 interorbital scales, 35–37 interciliary scales, 10–12 supralabials, 9–11 infralabials, 29–33 paravertebral tubercles of which 22–25 between limb insertions, 18 longitudinal rows of dorsal tubercles at midbody, 40–42 ventral scale rows at midbody, poorly defined, non-denticulate ventrolateral folds, a series of 13 or 14 enlarged femoroprecloacal scales including 2 pores on the proximalmost scales on each side separated by a single smaller medial scale in males, or six precloacal pits on a continuous series of 32–34 enlarged femoroprecloacal scales in females, no precloacal groove or depression, two or three postcloacal spurs on each side of the base of the tail in males and females, no interdigital webbing, 16–19 total subdigital lamellae on 4th toe, a row of widened median subcaudal plates, a banded dorsal pattern including an uninterrupted nuchal collar and three dark bands on dorsum, 10 or 11 dark-colored rings on original tail, and a golden iris. This trogloxene species is added to a long list of squamates endemic to the Saraburi Group Limestones.

Reptilia, taxonomy, morphology, karst, cave fauna, herpetology, trogloxene, Saraburi Group limestones



Cyrtodactylus panitvongi sp. nov.
ตุ๊กกายถ้ำลพบุรี

Etymology. The specific epithet honors our friend, the Thai zoologist, conservationist and photographer Nonn Panitvong, for his contributions to the knowledge of the fauna of the Kingdom of Thailand. We suggest the following common names: ตุ๊กกายถ้ำลพบุรี (Took-kai-tham-Lopburi; Thai), Lopburi Bent-toed Gecko (English), and Cyrtodactyle de Lopburi (French). 

  


Olivier S. G. Pauwels, Natthaphat Chotjuckdikul, Nattasuda Donbundit, Montri Sumontha and Worawitoo Meesook. 2024. Cyrtodactylus panitvongi, A New Cave-dwelling Bent-toed Gecko from Lopburi Province, central Thailand (Squamata: Gekkonidae).  Zootaxa. 5512(3); 373-388. DOI: doi.org/10.11646/zootaxa.5512.3.3

    

Friday, September 20, 2024

[Herpetology • 2024] Cyrtodactylus meesookae & C. wiboonatthapoli • Two New Cave-dwelling Species of Bent-toed Geckos (Squamata: Gekkonidae: Cyrtodactylus) from Saraburi and Loei provinces, Thailand

 

Cyrtodactylus meesookae
Sumontha, Panitvong, Kunya, Donbundit, W. Suthanthangjai, M. Suthanthangjai, Phanamphon & Pauwels, 2024


Abstract
We describe Cyrtodactylus meesookae sp. nov. from a cave on Khao Nam Phu (14°34’33.2”N, 101°08’42.6”E), a limestone hill in Saraburi Province, central Thailand, and C. wiboonatthapoli sp. nov. (previously confused with C. papilionoides) from a cave on Phu Pha Sana (17°10’33.8”N 101°57’52.5”E), a limestone hill in Loei Province, northeastern Thailand. These two micro-endemic, trogloxene species, separated by a distance of about 300 airline km, share a typical habitus for limestone-dwelling species and a relatively similar dorsal pattern, but they are readily distinguished by scalation characters.
 
Reptlia, taxonomy, morphology, karst, limestone



ตุ๊กกายถ้ำเขาน้ำพุ 
Cyrtodactylus meesookae sp. nov. 
from a cave on Khao Nam Phu, a limestone hill in Saraburi Province, central Thailand, 



ตุ๊กกายเอราวัณ
 Cyrtodactylus wiboonatthapoli sp. nov. 
(previously confused with C. papilionoides
from a cave on Phu Pha Sana, a limestone hill in Loei Province, northeastern Thailand. 


Montri Sumontha, Nonn Panitvong, Kirati Kunya, Nattasuda Donbundit, Winai Suthanthangjai, Maneerat Suthanthangjai, Eakarit Phanamphon and Olivier S. G. Pauwels. 2024. Two New Cave-dwelling Species of Bent-toed Geckos from Saraburi and Loei provinces, Thailand (Squamata: Gekkonidae: Cyrtodactylus).  Zootaxa. 5512(2); 272-294. DOI: doi.org/10.11646/zootaxa.5512.2.9
  facebook.com/100088301342746/posts/494195863533788
 

Friday, May 10, 2024

[Herpetology • 2024] Dixonius chotjuckdikuli • A New micro-endemic, Limestone-dwelling Leaf-toed Gecko (Gekkonidae: Dixonius) from Phetchaburi Province, western Thailand


Dixonius chotjuckdikuli 
Donbundit, Sumontha, Suthanthangjai, Suthanthangjai & Pauwels, 2024

  Khao Ebid Leaf-toed Gecko | จิ้งจกดินเขาอีบิด  ||  DOI: 10.11646/zootaxa.5447.4.5 
photo: Nonn Panitvong  facebook.com/NonnP
facebook.com: Natthaphat Chotjuckdikul
 
Abstract
We describe Dixonius chotjuckdikuli sp. nov. from Khao Ebid (Mount Ibit), Khao Yoi District, Phetchaburi Province, western Thailand. The new, limestone-dwelling species differs from all currently recognized species of Dixonius by the following combination of morphological characters and pattern: maximal known snout-vent length of 45.6 mm, 18 (rarely 16) longitudinal rows of dorsal tubercles; 31 to 34 paravertebral scales; 18 (rarely 16) longitudinal rows of ventral scales across the abdomen; 20 to 22 interciliary scales; 5 or 6 precloacal pores in males, no pores in females; a marked canthal stripe extending beyond the shoulder; and a blotched dorsal pattern in males, females and juveniles. This description brings the number of Dixonius species to 17, among which seven species are endemic to Thailand.

Reptilia, Gekkota, morphology, taxonomy, Southeast Asia



 Dixonius chotjuckdikuli sp. nov.

 
Nattasuda Donbundit, Montri Sumontha, Maneerat Suthanthangjai, Winai Suthanthangjai and Olivier S. G. Pauwels. 2024. Another New micro-endemic, Limestone-dwelling Leaf-toed Gecko (Gekkonidae: Dixonius) from Phetchaburi Province, western Thailand.  Zootaxa. 5447(4); 531-546. DOI: 10.11646/zootaxa.5447.4.5

Saturday, April 9, 2022

[Herpetology • 2022] Gehyra wongchan • A New Four-clawed Gecko (Gekkonidae: Gehyra) from Limestone Hills in Lopburi Province, central Thailand


Gehyra wongchan 
 Pauwels, Meesook, Kunya, Donbundit & Sumontha, 2022

จิ้งจกหินวงจันทร์ | Lunulate Four-clawed Gecko || DOI: 10.11646/zootaxa.5115.4.3

Abstract 
We describe Gehyra wongchan sp. nov. from Tham Khao Chan (Khao Chan Cave), Tha Luang District, and Wat Khao Wong, Kok Samrong District, in Lopburi Province, central Thailand. The new species differs from all currently recognized Gehyra by the following combination of morphological characters and dorsal color pattern: maximal known snout–vent length of 52.4 mm, 8–10 supralabials, 76–80 dorsal and 48–50 ventral scale rows around midbody, absence of skin folds on limbs, 17 or 18 preanofemoral pores in males in a continuous series extending to mid-length of femur (pores absent in females), tail not- to moderately widened behind vent in adults, a single row of widened subcaudals, digits and toes unwebbed, 7 or 8 divided subdigital lamellae on 4th toe, and a dorsal pattern with white spots as large or larger than adjacent crescentic black markings on a beige to light-brown background.

Keywords: Reptilia, Gehyra wongchan sp. nov., taxonomy, morphology, karst, cave, Saraburi Group Limestones

 Live adult male holotype (CUMZ-R-2598) of Gehyra wongchan sp. nov. in situ before capture.
Photograph by M. Sumontha.

Gehyra wongchan sp. nov.
 
Gehyra cf. angusticaudata –– Meesook et al. 2021: 322.

Etymology. The specific epithet wongchan is a name in apposition, invariable, based on the contraction of the localities of the paratypes (Wat Khao Wong) and of the holotype (Tham Khao Chan). In Thai wongchan also means the Moon, in reference to the typical crescent-shaped marks on the nape and dorsum of the new species. 
We suggest the following common names: จิ้งจกหินวงจันทร์ (Djing-djok-hin wongchan ; Thai); Lunulate Four-clawed Gecko (English) , and Gehyra lunulée (French) .



 Olivier S. G. Pauwels, Worawitoo Meesook, Kirati Kunya, Nattasuda Donbundit and Montri Sumontha. 2022. A New Four-clawed Gecko from Limestone Hills in Lopburi Province, central Thailand (Squamata, Gekkonidae: Gehyra). Zootaxa. 5115(1); 511-531. DOI: 10.11646/zootaxa.5115.4.3

Monday, May 31, 2021

[Herpetology • 2021] Dixonius mekongensis จิ้งจกดินแม่โขง • A New Sandstone-dwelling Leaf-toed Gecko (Gekkonidae: Dixonius) from the Thai-Lao Border


Dixonius mekongensis 
Pauwels, Panitvong, Kunya & Sumontha, 2021

จิ้งจกดินแม่โขง | Mekong Leaf-toed Gecko || DOI: 10.11646/zootaxa.4969.3.5 

photo: Nonn Panitvong  facebook.com/NonnP

Abstract
We describe Dixonius mekongensis sp. nov. from sandstone formations in Khong Chiam District, Ubon Ratchathani Province, in extreme eastern Thailand along the Laotian border. The new species differs from all currently recognized Dixonius by the following combination of morphological characters and pattern: maximal known snout-vent length of 51.2 mm; 16 longitudinal rows of dorsal tubercles; 32 to 34 paravertebral scales; 22 to 24 longitudinal rows of ventral scales across the abdomen; seven precloacal pores in males, no pores in females; a marked canthal stripe; and a spotted to uniform dorsal pattern. This description brings the number of Dixonius species to 13, with six species endemic to Thailand.

Keywords: Reptilia, Mekong River, Isan, Dixonius mekongensis sp. nov., taxonomy


Dixonius mekongensis 

photo: Nonn Panitvong  facebook.com/NonnP


Olivier S. G. Pauwels, Nonn Panitvong, Kirati Kunya and Montri Sumontha. 2021. A New Sandstone-dwelling Leaf-toed Gecko (Gekkonidae: Dixonius mekongensis) from the Thai-Lao Border. Zootaxa. 4969(3); 526–538. DOI: 10.11646/zootaxa.4969.3.5

  จิ้งจกดินแม่โขง Mekong Leaf-toed Gecko
  Dixonius mekongensis Pauwels, Panitvong, Kunya & Sumontha, 2021
 เป็นสัตว์สัตว์เฉพาะถิ่นของไทย
 พบอาศัยเฉพาะบริเวณภูเขาและลานหินทราย


Thursday, May 20, 2021

[Herpetology • 2021] Trimeresurus kuiburi งูหางแห้มกุย • A New Karst-dwelling, Colorful Pitviper (Viperidae: Trimeresurus) from northern Peninsular Thailand


 Trimeresurus kuiburi 
Sumontha, Suntrarachun, Pauwels, Pawangkhanant, Chomngam, Iamwiriyakul & Chanhome, 2021

งูหางแห้มกุย | Kui Buri Pitviper || DOI:  10.11646/zootaxa.4974.2.4
 Photograph by M. Sumontha.  facebook.com/MontriSumontha

 
Abstract
We describe a colorful and distinctively patterned, karst-dwelling pitviper, Trimeresurus kuiburi sp. nov., from the isolated, coastal massif of Khao Sam Roi Yot in Kui Buri District, Prachuap Khiri Khan Province, in northern Peninsular Thailand. The new species, member of the ‘Cryptelytrops group’ sensu Malhotra & Thorpe (2004) and morphologically and genetically allied to Trimeresurus kanburiensis and T. venustus, differs from all pitviper taxa by a combination of red/purple bands on a green dorsum; a white concave suborbital stripe in males (straight and less visible in females); white, spaced vertebral dots in males (absent in females); pale green belly lacking dark dots or stripe on the lateral sides of the ventrals; partially fused first supralabial and nasal scale; 19 dorsal scale rows at midbody; 164–171 ventrals; 63–65 subcaudals in males, 51–53 in females; maximal known SVL of 451 mm; and long, papillose hemipenes.

Keywords: 
Reptilia, Thai-Malay Peninsula, Gulf of Thailand, Trimeresurus kuiburi sp. nov., taxonomy, limestone


Live adult male holotype of  Trimeresurus kuiburi sp. nov.
 Photograph by M. Sumontha.

Trimeresurus kuiburi sp. nov.
Trimeresurus sp. — Sumontha et al. 2017a: 561.

Etymology. The specific epithet is a noun in apposition, invariable, in reference to the administrative district Kui Buri in which the type-locality lies. 
We suggest the following common names: งูหางแห้มกุย (Ngu Hang Ham Kui, Thai), Kui Buri Pitviper (English), Trimérésure de Kui Buri (French), and Kui Buri Bambusotter (German).


Montri Sumontha, Sunutcha Suntrarachun, Olivier S. G. Pauwels, Parinya Pawangkhanant, Nirut Chomngam, Prapanth Iamwiriyakul and Lawan Chanhome. 2021. A New Karst-dwelling, Colorful Pitviper (Viperidae: Trimeresurus) from northern Peninsular Thailand. Zootaxa. 4974(1); 307–332. DOI:  10.11646/zootaxa.4974.2.4

Wednesday, May 12, 2021

[Herpetology • 2021] Gekko (Gekko) pradapdao • A New Cave-dwelling Gekko (Squamata, Gekkonidae) from Lopburi Province, central Thailand


Gekko pradapdao  
Meesook, Sumontha, Donbundit & Pauwels, 2021

ตุ๊กแกประดับดาว | Starry Tokay Gecko || siamensis.org 

Abstract
We describe Gekko pradapdao sp. nov. from Tham Khao Chan (Khao Chan Cave), Tha Luang District, Lopburi Province, in central Thailand. The new species, a member of the subgenus Gekko, differs from all currently recognized Gekko species by the following combination of morphological characters and pattern: maximal known snout-vent length of 127.1 mm, lack of contact between nostrils and rostral, 24–28 interorbital scales between supraciliaries, 89–91 scale rows around midbody, 16–18 dorsal tubercle rows at midbody, 30–34 ventral scale rows at midbody, 11–13 precloacal pores in males, a single postcloacal tubercle on each side of the base of the tail, 13–16 subdigital lamellae on 1st toe and 17–19 on 4th toe, no Y-shaped mark on head, non-banded dorsal pattern on a dark chocolate brown to black background, and a dark brown iris. Urgent actions should be taken to evaluate the conservation status of the new species.

Keywords: Reptilia, Gekko pradapdao sp. nov., taxonomy





Worawitoo Meesook, Montri Sumontha, Nattasuda Donbundit and Olivier S. G. Pauwels. 2021. A New Cave-dwelling Gekko (Gekko) from Lopburi Province, central Thailand (Squamata, Gekkonidae). Zootaxa. 4969(2); 318–330. DOI: 10.11646/zootaxa.4969.2.5


ตุ๊กแกประดับดาว   Starry Tokay Gecko
Gekko (Gekko) pradapdao Meesook, Sumontha, Donbundit & Pauwels, 2021

สัตว์เฉพาะถิ่นเขาหินปูน พบเฉพาะภาคกลางของประเทศไทย
... ด้วยลักษณะสีตัวที่สีน้ำตาลเข้ม-ดำ และมีจุดประสีขาวกระจายทั่วตัว จึงเป็นที่มาของชื่อวิทยาศาสตร์ที่มาจากภาษาไทยว่า “ประดับดาว - pradapdao


Tuesday, January 19, 2021

[Herpetology • 2021] Oligodon phangan & O. promsombuti • Two New Kukri Snake Species (Colubridae: Oligodon) from the Nakhon Si Thammarat Mountain Range, and Addition of O. ocellatus to the Fauna of Thailand


Oligodon phangan 
Pauwels, Thongyai, Chantong & Sumontha, 2021


Abstract
We describe two new Kukri snakes of the genus Oligodon from the Nakhon Si Thammarat Mountain Range, southern peninsular Thailand. Oligodon phangan sp. nov., endemic to Pha-Ngan Island, Surat Thani Province, is characterized by a maximal known SVL of 369.1 mm; 12 maxillary teeth, the posterior three enlarged; 17-17-15 dorsal scale rows; 163–166 ventrals; 33–42 divided subcaudals; a single anal; dorsal color brown with a pair of discreet paravertebral and lateral stripes; no dorsal or supracaudal bands, blotches or crossbars; background color of belly pinkish-orange; underside of tail immaculate. Oligodon promsombuti sp. nov., whose type-locality is Khao Phanom Wang, Surat Thani Province, is also found in Trang Province, and is characterized by a maximal known SVL of 552.7 mm; 12 maxillary teeth, the posterior three enlarged; 17-17-15 dorsal scale rows; 177 ventrals; 40 divided subcaudals; a single anal; deeply forked hemipenes lacking spines; dorsal color blackish brown with nearly indistinct paravertebral stripes; no dorsal or supracaudal blotches or crossbars; background color of belly ivory, heavily speckled with subrectangular blackish blotches. We tentatively allocate both new species to the informal Oligodon-cyclurus-group. They are the 5th and 6th Oligodon species endemic to Thailand. We add Oligodon ocellatus, so far known only from Cambodia, southern Laos and southern Vietnam, to the Thai fauna, based on a specimen from Chong Mek, Ubon Ratchathani Province.

Keywords: Reptilia, Thai-Malay Peninsula, Thailand, Oligodon ocellatus, Oligodon phangan sp. nov., Oligodon promsombuti sp. nov., taxonomy, limestone, karst



  Olivier S. G. Pauwels, Kanokorn Thongyai, Pajapon Chantong and Montri Sumontha. 2021. Two New Kukri Snake Species (Colubridae: Oligodon) from the Nakhon Si Thammarat Mountain Range, and Addition of O. ocellatus to the Fauna of Thailand. Zootaxa. 4908(4); 537–557. DOI:  10.11646/zootaxa.4908.4.7