Parinya Pawangkhanant

• Researcher at University of Phayao , R I M

We describe a new species of green pitviper from the northern part of Central Thailand based on morphological and molecular (2406 bp from cyt b, ND4, and 16S rRNA mitochondrial DNA genes fragments) lines of evidence. Trimeresurus cryptographicus sp. nov. is distinguished from its congeners by the combination of the following morphological character...

We describe a new species of lance-headed pit viper from north-western Laos, based on morphological and molecular (6092 bp from cyt b, ND4, COI, 12S rRNA and 16S rRNA mitochondrial DNA genes and c-mos and RAG1 nuclear DNA genes) lines of evidence. Protobothrops flavirostrissp. nov. is easily distinguished from its congeners by the following combina...

A new species of the Cnemaspis siamensis group is described from Wang Khrachae District, Kanchanaburi Province, western Thailand based on morphological and molecular data. The new species, Cnemaspis enneaporus Rujirawan, Aksornneam & Aowphol, sp. nov., is distinguished from other species in the C. siamensis group by having the combination of SVL 42...

We describe a new species of karst-dwelling pitviper from Sa Kaeo Province in eastern Thailand based on morphological and molecular (2,296 bp from cyt b, ND4, and 16S rRNA mitochondrial DNA genes) lines of evidence. Our phylogenetic analysis places the new species as a sister lineage of Trimeresurus venustus (p = 2.7% and 3.7% for cyt b and ND4 gen...

Despite increased attention by molecular taxonomists, the herpetofauna of Southeast Asia still hides many undescribed species among far-ranging taxa. In this study, we reexamine the mitochondrial diversity of painted frogs of the microhylid genus Kaloula, based on ~2,455 bp of published and new 12S and 16S rRNA sequences, and describe two new speci...

With 90 recognized species, kukri snakes in the genus Oligodon Fitzinger constitute the second largest snake radiation in the world. Oligodon species are collectively distributed across the Asian continent and possess several ecological and morphological attributes that are unique amongst other snakes. Despite their high levels of species richness,...

Berdmore’s narrow-mouthed frog, Microhyla berdmorei (Blyth, 1856), is the largest member of the genus Microhyla and is distributed all over Southeast Asia, from Northeast India and southern China to Sumatra and Borneo in Indonesia. Here we demonstrate that M. berdmorei represents a complex of four species that are morphologically, acoustically, and...

We describe a new species of green pitviper from southern and central parts of coastal Vietnam based on morphological and molecular (2406 bp from cyt b, ND4, and 16S rrNA mitochondrial DNA genes) lines of evidence. Trimeresurus cyanolabris sp. nov. is distinguished from its congeners by the combination of the following morphological characters: sma...

We describe a new species of kukri snake (Oligodon Fitzinger, 1826) from the limestone karst formations of Satun and Trang Provinces in southern Thailand. Phylogenetic analyses based on three mitochondrial DNA fragments (12S–16S ribosomal rRNA and cytochrome b) recover the new species within the Oligodon cinereus species complex, where it forms a d...

Model based integrative analyses supports the recognition of a new species of the Cyrtodactylus brevipalmatus group from Phuket Island, Thailand. Cyrtodactylus thalang sp. nov. is most closely related to the sister species C. brevipalmatus from the Thai-Malay Peninsula and C. cf. brevipalmatus from Langkawi Island, Kedah State, Peninsular Malaysia....

Despite recent progress in our understanding of diversity within the genus Trimeresurus Lacépède, 1804, the subgenus Popeia Malhotra & Thorpe, 2004, distributed across most parts of East and Southeast Asia, remains taxonomically challenging. We applied an integrative taxonomic approach including analyses of morphological data and four mitochondrial...

We describe a new species of karst-dwelling pitviper from Chumphon Province of Peninsular Thailand, in the Isthmus of Kra, based on morphological and molecular data (2427 bp from cyt b, ND4 and 16S rRNA mitochondrial DNA genes). Morphologically, Trimeresurus kraensis sp. nov. is distinguished from other congeners by the following combination of mor...

We describe a unique new species and genus of agamid lizard from the karstic massifs of Khammouan Province, central Laos. Laodracon carsticola Gen. et sp. nov. is an elusive medium-sized lizard (maximum snout-vent length 101 mm) specifically adapted to life on limestone rocks and pinnacles. To assess the phylogenetic position of the new genus among...

The Indochinese Peninsula represents one of the key global biodiversity hotspots in Southeast Asia. The herpetofauna of Indochina (herein including Vietnam, Laos, Cambodia, and Thailand) currently (as by 10 August 2023) comprises 882 native and six invasive species of reptiles and is one of the richest in the world. About 40% of the Indochinese rep...

An integrative taxonomic analysis recovers a distinctive new species of the gekkonid genus Cyrtodactylus Gray, 1827 from Satun Province in extreme southern Thailand as the sister species to the Cyrtodactylus intermedius group of southern Indochina, approximately 600 km to the northeast across the Gulf of Thailand. Based on 1449 base pairs of the mi...

We describe a new species of pitvipers from Trang Province of Thailand, near the Thailand–Malaysian border, based on morphological and molecular (2427 bp from cyt b, ND4, and 16S rRNA mitochondrial DNA genes) lines of evidence. Morphologically, Trimeresurus ciliaris sp. nov. is distinguished from its congeners by the following combination of morpho...

We report on a new species, Zhangixalus melanoleucus sp. nov from the Phou Samsoum Mountain in Xiengkhouang Province, northeastern Laos, based on an integrative taxonomic approach including morphological, molecular and bioacoustic lines of evidence. Morphologically, the new species is distinguished from its congeners by a combination of the followi...

The leaf insect Pulchriphyllium giganteum (Hausleithner, 1984) is recorded in Thailand for the first time. The diagnosis, measurements, photographs, and short notes of the specimen are also provided.

An integrative taxonomic analysis confirmed the new species status of a recently discovered upland population of Ansonia from Thongsong, Thongsong District, Nakhon Si Thammarat Province, Thailand from the sky island archipelago south of the Isthmus of Kra. Ansonia infernalis sp. nov. is a member of the Thai-Burmese clade within the more inclusive T...

Here, a new species of bent-toed gecko, Cyrtodactylus phukhaensis sp. nov., is described from Doi Phu Kha, Nan province, Thailand based on molecular and morphological evidence. A phylogeny based on NADH dehydrogenase subunit 2 (ND2) and its flanking tRNAs places the new species in the chauquangensis group as a sister taxon to Cyrtodact ylus wayakon...

A new species of sisoroid catfish in the genus Akysis is described from the Mae Klong drainage in western Thailand, marking the first record of this genus there. Akysis patrator, new species, can be distinguished from congeners in having the adipose fin preceded by a long, low ridge contacting the base of the last dorsal-fin ray and a colour patter...

First country record for Thailand. We suggest the Thai common name: งูลายสาบท้องแดง. Locality in Narathiwat Province represents northernmost distribution known, ca. 120 km northeast of nearest known population in Gunung Hijau, Banjaran Bintang State, Peninsular Malaysia

First record for Chiang Mai and Nan provinces, as well as second for Thailand. Locality in Chiang Mai Province represents the southwest-most distribution known, ca. 65 km northeast of nearest known population in Ban Pa Miang Mae Hang, Moo. 7, Pagnew Subdistrict, Wieng Pa Pao District, Chiang Rai Province, Thailand

We report the first country record of Leptobrachella eos (Ohler, Wollenberg, Grosjean, Hendrix, Vences, Ziegler & Dubois, 2011) from Thailand, based on one specimen collected from Chom poo Phuka nature trail, Bo Kluea District. Morphologically, the specimen displayed good agreement with the original descriptions provided for L. eos . Phylogenetical...

Slug-eating snakes of the subfamily Pareinae are an insufficiently studied group of snakes specialized in feeding on terrestrial mollusks. Currently Pareinae encompass three genera with 34 species distributed across the Oriental biogeographic region. Despite the recent significant progress in understanding of Pareinae diversity, the subfamily remai...

The integrated results of morphological and molecular phylogenetic analyses confirmed the new species status of a recently discovered population of Ansonia from Suan Phueng District, Ratchaburi Province, Thailand. Ansonia karen sp. nov. is separated from all other species of Ansonia by a unique combination of mensural, discrete morphological, and c...

The first integrative taxonomic analysis of the Cyrtodactylus brevipalmatus group of Southeast Asia recovered two newly discovered populations from the Tenasserim Mountains in Suan Phueng District, Ratchaburi Province, Thailand as a new species described here as C. rukhadeva sp. nov. Based on 1397 base pairs of the mitochondrial gene NADH dehydroge...

The genus Leptobrachella is one of the most speciose and taxonomically troubling groups of Asian anurans. Herein, we describe a new species of Leptobrachella from Doi Inthanon, Chiang Mai Province, Thailand based on the integration of morphological, acoustic and molecular data. The new species, Leptobrachella murphyi sp. nov., is morphologically di...

Thailand is considered a global biodiversity hotspot that is known to harbour a striking diversity of endemic species. However, several research studies have determined that the level of amphibian diversity in the country has been significantly underestimated. The megophryid genus Leptobrachella Smith, 1925 is currently known to include 89 species...

First records for the species for Songkla and Yala provinces, as well as second report for Thailand; locality in Songkla represents northernmost distribution limit known for species

Spiny Frog Quasipaa is a genus of frogs that belongs to a relatively poorly known group. Most of the species distribution has been recorded in China; however, a few incidences of identification have occurred in the eastern part of Indochina. To date, only one species (Quasipaa fasciculispina) of Quasipaa has been recorded from Chanthaburi and Trat...

The original description of the colubrid snake Dendrelaphis nigroserratus Vogel, Van Rooijen and Hauser, 2012 was mainly based on specimens from the mountains of Thailand's Tak Province. Other localities were poorly documented. We here report nearly twenty new records, extending the range of the species some 480 km to the south in Surat Thani Provi...

We report seven new country records of species of reptiles on the basis of recent herpetological surveys between 2015-2019 in southern Thailand: Gekko (Ptychozoon) cicakterbang, Dasia grisea, and Sphenomorphus sungai-colus from Yala Province; Gonocephalus liogaster, Gekko (Sundagekko) browni, Oligodon signatus, and Xeno-chrophis maculatus from Nara...

The taxonomic status of the Thai populations belonging to the Limnonectes kuhlii species complex is controversial, due to phenotypic similarity in the cryptic species complex. Recently, some studies on this group in Thailand have discovered four new species: L. taylori , L. megastomias , L. jarujini and L. isanensis . Even so, the diversity of this...

First time records for this species for Thailand as well as Chiang Rai and Nan provinces, previously considered endemic in China, we are suggested Thai common name: งงูสายม่านคอเหลือง (Ngu Sai-Marn Kor-Lheung)

The Indochinese Peninsula is recognized as one of the key global biodiversity hotspots. The amphibian fauna of Indochina (including Vietnam, Laos, Cambodia and Thailand) is one of the richest in the world. About 60% of the known species were described within the last 20 years. We review the literature and our data to assess all recent discoveries a...

The bushfrog genus Gracixalus Delorme, Dubois, Grosjean & Ohler, 2005 is found in southern and south-western China, Vietnam, Laos, Thailand and Myanmar. It is presently comprised of 17 species. In Thailand, only two species have been recorded, namely G. carinensis (Boulenger) and G. seesom (Massui, Khonsue, Panha & Eto). The latter of these two spe...

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...

Phylogenetic analyses of the 49 nominal species of the gekkonid genus Hemiphyllodactylus based on the mitochondrial gene NADH dehydrogenase subunit 2 and its flanking tRNAs resulted in a strongly supported tree composed of a number of regionally localised mono-phyletic lineages consistent with previous genus-wide analyses. One such lineage from Wes...

Cyrtodactylus species are the most diverse of the geckos and are widely distributed in Southeast Asia, including Thailand. However, their patterns of distribution, especially in northern and western parts of Thailand, remain unknown because few Cyrtodactylus species in these regions have been described. Thus, a data set of mitochondrial NADH dehydr...

Here we report predation of an adult female giant huntsman spider (Araneae: Sparassidae: Heteropodinae: Heteropoda sp. belonging to the Heteropoda tetrica group) by an adult G. longicaudum. To the best of our knowledge, this is the first observation of a prey item for G. longicaudum and first time identified for prey to level of the genus

An integrative taxonomic analysis recovered the new miniaturised species Microhyla tetrix sp. nov. of the M. superciliaris group as the sister species to M. superciliaris. The new species inhabits low-elevation to mid-elevation evergreen tropical forests of Ratchaburi, Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani and Krabi provinces of s...

An integrative taxonomic analysis recovered the new species Cnemaspis selenolagus sp. nov. of the C. siamensis group as the sister species to C. punctatonuchalis. The new species was discovered in mountain evergreen tropical forests of in Suan Phueng District of Ratchaburi Province, western Thailand. Additionally, the analysis recovered a deep gene...

Pseudoxenodon bambusicola: First record for Thailand (Nan Province) as well as westernmost distributional limit of this species

A new species of Cyrtodactylus from Tak Province, Thailand, Cyrtodactylus amphipetraeus sp. nov., is described using an integrative taxonomic analysis based on morphology, color pattern, and the mitochondrial gene NADH dehydrogenase subunit 2 (ND2). The phylogenetic analyses place the new species within the C. sinyineensis group which was previousl...

Supplementary tables A new species of Micryletta (Amphibia: Microhylidae) from southern Thailand We report on a new species, Micryletta dissimulans sp. nov., from the lowland forests of southern Thailand, which is described based on molecular and morphological evidence. The new species is characterized by a combination of the following characters...

Supplementary methods A new species of Micryletta (Amphibia: Microhylidae) from southern Thailand We report on a new species, Micryletta dissimulans sp. nov., from the lowland forests of southern Thailand, which is described based on molecular and morphological evidence. The new species is characterized by a combination of the following character...

Supplementary figures A new species of Micryletta (Amphibia: Microhylidae) from southern Thailand We report on a new species, Micryletta dissimulans sp. nov., from the lowland forests of southern Thailand, which is described based on molecular and morphological evidence. The new species is characterized by a combination of the following character...

We report on a new species, Micryletta dissimulans sp. nov., from the lowland forests of southern Thailand, which is described based on molecular and morphological evidence. The new species is characterized by a combination of the following characters: small body size (20.3–22.4 mm in males, 24.4–26.7 mm in females); slender body habitus; head long...

An integrative taxonomic analysis of newly discovered populations of Hemiphyllodactylus from Indochina recovered a new species from Peninsular Thailand and two others from Laos. The new Thai species, Hemiphyllodactylus pardalis sp. nov. described herein, is the sister species to all other species in the newly designated Indochina clade and has a un...

Frogs of the genus Microhyla include some of the world's smallest amphibians and represent the largest radiation of Asian microhylids, currently encompassing 50 species, distributed across the Oriental biogeographic region. The genus Microhyla remains one of the taxonomically most challenging groups of Asian frogs and was found to be paraphyletic w...

The results of herpetological surveys conducted throughout Laos in 2016-2019 resulted in significant records at the country and provincial levels for several amphibian and reptile species, other than lizards. Three species, namely Quasipaa verrucospinosa, Gracixalus quangi, and Theloderma lateriticum, were recorded for Laos for the first time. The...

The results of herpetological surveys conducted throughout Laos in 2016-2019 resulted in significant records at the country and provincial levels for several amphibian and reptile species, other than lizards. Three species, namely Quasipaa verrucospinosa, Gracixalus quangi, and Theloderma lateriticum, were recorded for Laos for the first time. The...

Protobothrops kelomohy sp. nov. is described from dry evergreen forest in Chiang Mai Province, northern Thailand, based on morphology and a molecular phylogeny. It differs from congeners by the following combination of characters: 1) relatively large body size (total length up to 1,310 mm); 2) dorsal scale rows 23-23-17, all keeled; 3) ventral scal...

Species of Xenophrys are conserved morphologically and live primarily in forests. In Thailand, the genus harbors many cryptic species. Herein we report the collection of specimens from Doi Inthanon, Chiang Mai Province, northern Thailand, which were identified previously as X. minor. Molecular and morphological analyses find that these specimens di...

We present a morphological and molecular assessment of the Microhyla fauna of Myanmar based on new collections from central (Magway Division) and northern (Kachin State) parts of the country. In total, six species of Microhyla are documented, including M. berdmorei, M. heymonsi, M. butleri, M. mukhlesuri and two new species described from the semi-...

We describe a new species of the genus Tylototriton from Ingyin Taung Mt., Mohnyin Township, Kachin State, Myanmar, based on morphological and molecular evidence. The new species is assigned to the subgenus Tylototriton s. str. and is clearly distinct from all known congeners by the following characters: medium body size; thin, long tail, lacking l...

In the family Scincidae, karyotypes of most species have diploid numbers of 28–32 chromosomes. They are bimodal, i.e. there are two distinct size classes of chromosomes: microchromosomes and macrochromosomes. Previous karyotypic studies of the common supple skink, Lygosoma bowringii, showed the karyotype comprising 18 macro- and 14 microchromosomes...

We describe a new species of the genus Leptobrachium from the Khao Laem Mountain, Suan Phung District, Ratchaburi Province, Tenasserim Region, western Thailand, based on molecular and morphological evidences. The new species, Leptobrachium tenasserimense sp. nov., can be distinguished from all other congeners by the following combination of charact...

Specimens and sequences used for molecular analyses Sample IDs correspond to those shown in Fig. 2. GenBank AN –GenBank Accession Number.

Genetic divergence of the genus Leptobrachium Uncorrected p-distances (percentage) for 16S rRNA sequences (below diagonal) and calculation error (above diagonal) of the examined species of Leptobrachium. Within-clade genetic distances for are shown on the diagonal in bold. Continued on the next page.

Newly obtained 12S rRNA—16S rRNA seqeunces of Leptobrachium sp

We report on the discovery of a new genus of microhylid subfamily Asterophryinae from northern and eastern Indochina, containing three new species. Vietnamophryne Gen. nov. are secretive miniaturized frogs (SVL<21 mm) with a mostly semi-fossorial lifestyle. To assess phylogenetic relationships, we studied 12S rRNA-16S rRNA mtDNA fragments with a fi...

We report on a discovery of Siamophryne troglodytesGen. et sp. nov., a new troglophilous genus and species of microhylid frog from a limestone cave in the tropical forests of western Thailand. To assess its phylogenetic relationships we studied the 12S rRNA–16S rRNA mtDNA fragment with final alignment comprising up to 2,591 bp for 56 microhylid spe...

The final alignment of the obtained sequences of the 16S rRNA–12S rRNA fragment of Siamophryne troglodytes Gen. et sp. nov. specimens, as well as Microhylidae and non-Microhylidae outgroup taxa, subjected to the phylogenetic analyses. Alignment in fasta (.fas) file format.

We describe Dixonius kaweesaki sp. nov. from Khao Daeng, a limestone mountain in Khao Sam Roi Yot massif, Prachuap Khiri Khan Province, peninsular Thailand. It is diagnosed from all other species by a combination of maximal SVL of 41.6 mm; 12 or 13 longitudinal rows of dorsal tubercles; 24 longitudinal rows of ventrals across the abdomen; a continu...

We describe Dixonius kaweesaki sp. nov. from Khao Daeng, a limestone mountain in Khao Sam Roi Yot massif, Prachuap Khiri Khan Province, peninsular Thailand. It is diagnosed from all other species by a combination of maximal SVL of 41.6 mm; 12 or 13 longitudinal rows of dorsal tubercles; 24 longitudinal rows of ventrals across the abdomen; a continu...

We discuss phylogenetic relationships and taxonomic diversity of the rhacophorid frogs of the genus Theloderma in sight of the novel phylogenetic data obtained from the Bayesian analysis of the up to 1987 bp length fragment of mtDNA (12S rRNA, tRNAval, and 16S rRNA) from the 90 specimens of 21 nominal species of Theloderma and 3 species of Nyctixal...