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1.
Zootaxa ; 4609(2): zootaxa.4609.2.10, 2019 May 23.
Artigo em Inglês | MEDLINE | ID: mdl-31717113

RESUMO

An integrative taxonomic analysis of Subdoluseps herberti from southern Thailand and Peninsular Malaysia and S. samajaya from Sarawak, East Malaysia (Borneo) recovers the former as paraphyletic with respect to the latter. The analyses recover the three southernmost populations of S. herberti in Peninsular Malaysia as conspecific and the sister lineage of S. samajaya, whereas S. herberti from Thailand and northern Peninsular Malaysia constitute the sister species to S. samajaya plus the southern three Peninsular Malaysian populations. As such, the southern populations are described herein as S. malayana sp. nov. and all three species are referred to as the S. herberti group. Clade boundaries and breaks within this group on the Thai-Malay Peninsula occurring at the Isthmus of Kra, across the Kangar-Pattani line, and between the Thai-Malay Peninsula and Borneo are consistent with phylogeographic patterns of other Sundaic taxa. The discovery of S. malayana sp. nov. continues to underscore the fact that, despite the well-studied nature of the lizard fauna of Peninsular Malaysia, much of it still remains unrealized and for conservation efforts to move forward, field research followed by expeditiously revised taxonomies must continue.


Assuntos
Lagartos , Animais , Bornéu , Malásia , Filogenia , Tailândia
2.
Zootaxa ; 4638(2): zootaxa.4638.2.1, 2019 Jul 16.
Artigo em Inglês | MEDLINE | ID: mdl-31712473

RESUMO

An integrative taxonomic analysis of the Ptychozoon lionotum group across its range in Indochina and Sundaland recovers P. lionotum sensu lato Annandale, 1905 as paraphyletic with respect to P. popaense Grismer, Wood, Thura, Grismer, Brown, Stuart, 2018a and composed of four allopatric, genetically divergent, ND2 mitochondrial lineages. Multivariate and univariate analyses of continuous and discrete morphological and color pattern characters statistically and discretely diagnose each lineage from one another and together, with maximum likelihood and Bayesian inference analyses, provide the foundation for the recognition of each lineage as a new species-hypotheses corroborated with a Generalized Mixed Yule Coalescent species delimitation analysis. Ptychozoon cicakterbang sp. nov. ranges throughout Peninsular Malaysia to Pulau Natuna Besar, Indonesia; P. kabkaebin sp. nov. is endemic to northern and central Laos; and P. tokehos sp. nov. ranges from southern Thailand south of the Isthmus of Kra northward to Chiang Mai, fringing the Chao Phraya Basin and ranging southward through Cambodia to southern Vietnam. Ptychozoon lionotum sensu stricto ranges from northwestern Laos through southern Myanmar to eastern India. The phylogeographic structure within each species varies considerably with P. lionotum s.s. showing no genetic divergence across its 1,100 km range compared to P. cicakterbang sp. nov. showing upwards of 8.2% sequence divergence between syntopic individuals. Significant phylogeographic structure exists within P. tokehos sp. nov. and increased sampling throughout Thailand may require additional taxonomic changes within this species.


Assuntos
Lagartos , Filogenia , Animais , Ásia , Teorema de Bayes , Variação Genética , Indochina
3.
Zootaxa ; 4577(2): zootaxa.4577.2.3, 2019 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-31715722

RESUMO

Two new species of Bent-toed Geckos of the Cyrtodactylus peguensis group are described from foothill areas occurring on opposite sides of the Ayeyarwady Basin. Cyrtodactylus nyinyikyawi sp. nov. from the Shwe Settaw Wildlife Sanctuary, Magway Region in the east and C. pyadalinensis sp. nov. from the Panluang-Pyadalin Wildlife Sanctuary, Shan State in the west bear unique suits of morphological and color pattern character states separating them from all species in the peguensis group. Additionally, a molecular phylogeny based on the mitochondrial gene ND2 indicates that neither species is nested within, nor sister to any known species in the group. This study augments recent and ongoing studies showing that the Ayeyarwady Basin is herpetologically more diverse than previously considered and should be incorporated into ongoing discussions concerning conservation efforts in Myanmar.


Assuntos
Lagartos , Animais , Cor , Genes Mitocondriais , Mianmar , Filogenia
4.
Zootaxa ; 4683(3): zootaxa.4683.3.4, 2019 Oct 09.
Artigo em Inglês | MEDLINE | ID: mdl-31715918

RESUMO

Molecular phylogenetic analyses of the sister species Sphenomorphus stellatus and S. praesignis based on the mitochondrial genes 12S and 16S rRNA recover the former as paraphyletic with respect to the latter in that a specimen of S. stellatus from the type locality in Peninsular Malaysia is more closely related to S. praesignis than to Indochinese populations of S. stellatus. Furthermore, the phylogeny indicates that the Indochinese populations represent two species, thus resulting in four major lineages within this clade. These relationships are consistent with multivariate and univariate analyses of morphological and discrete color pattern data which statistically define and diagnose the four lineages and together with the molecular data, provide the foundation for robust, testable, species-level hypotheses. As such, S. stellatus is herein restricted to Peninsular Malaysia; S. annamiticus is resurrected for the circum-continental populations ranging through southeastern Thailand, southern Cambodia, and southern Vietnam; a new species-S. preylangensis sp. nov.-is described from an isolated mountain, Phnom Chi, from the Prey Lang Wildlife Sanctuary in central Cambodia; and the taxonomy of S. praesignis remains unchanged. The description of S. preylangensis sp. nov. underscores the necessity to conserve this remnant of lowland evergreen rainforest in the Prey Lang Wildlife Sanctuary.


Assuntos
Lagartos , Animais , Camboja , Lagartos/genética , Malásia , Filogenia , RNA Ribossômico 16S , Tailândia , Vietnã
5.
Zootaxa ; 4624(3): zootaxa.4624.3.1, 2019 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-31716208

RESUMO

An integrative taxonomic analysis of the Cyrtodactylus linnwayensis group of the Shan Plateau recovered two new populations from isolated karst habitats near Pinlaung Town, Shan State as a new species, C. pinlaungensis sp. nov. Cyrtodactylus pinlaungensis sp. nov. is most closely related to a clade comprising C. linnwayensis and C. ywanganensis from the western edge of the Shan Plateau approximately 90 km to the northwest. Cyrtodactylus pinlaungensis sp. nov. can be distinguished from all members of the C. linnwayensis group by a number of statistically different morphological characters, discrete color pattern differences, and its heavy tuberculation. It also bears an uncorrected pairwise sequence divergence of 5.0-7.6% from all other species combined based on the mitochondrial gene ND2 and its flanking tRNAs. The discovery of this new species on the Shan Plateau continues to underscore the fact that this region is rapidly emerging as a herpetological diversity hot-spot for Myanmar.


Assuntos
Lagartos , Animais , Ecossistema , Genes Mitocondriais , Mianmar , Filogenia
6.
Zootaxa ; 4623(1): zootaxa.4623.1.1, 2019 Jun 24.
Artigo em Inglês | MEDLINE | ID: mdl-31716271

RESUMO

A herpetological survey of the Indawgyi Wildlife Sanctuary in Kachin State, Myanmar resulted in the discovery of a new species of Cyrtodactylus Gray along the eastern watershed of the Mokso Mountains. An integrative taxonomic analysis based on the mitochondrial ND2 gene, morphology, and color pattern recovered this new species, Cyrtodactylus mombergi sp. nov., as the sister taxon to an undescribed species from Miao, Arunachal Pradesh, India. Bayesian and maximum likelihood analyses recovered notable genetically divergent (4.7%) phylogeographic structure between northern and southern populations of C. mombergi sp. nov. across only 14 km of continuous habitat. Conversely, genetic divergence did not exceed 9.2% between C. mombergi sp. nov. and the undescribed species from Miao from across 355 km of habitat. Cyrtodactylus mombergi sp. nov. belongs to a well-supported, mitochondrial clade of 18 other species which now compose an expanded and redefined C. gansi group. Cyrtodactylus mombergi sp. nov. is only the third species of Bent-toed Gecko reported from Kachin State and indicates that additional herpetological surveys are needed in unexplored forested areas.


Assuntos
Lagartos , Animais , Teorema de Bayes , Ecossistema , Florestas , Índia , Mianmar , Filogenia
7.
Zootaxa ; 4668(1): zootaxa.4668.1.3, 2019 Sep 09.
Artigo em Inglês | MEDLINE | ID: mdl-31716638

RESUMO

A new species of limestone karst-adapted gecko of the Cyrtodactylus pulchellus complex, C. dayangbuntingensis sp. nov., is described from Dayang Bunting Island of the Langkawi Archipelago off the northwest coast of Peninsular Malaysia. It is the third species of the group to be described from the archipelago after C. langkawiensis and C. macrotuberculatus. The new species can be distinguished from all other species of Cyrtodactylus based on molecular evidence from the mitochondrial gene ND2 and its flanking tRNAs as well as having unique combinations of morphological and color pattern characteristics. This discovery underscores the need for continued surveys of the many islands in the archipelago to properly ascertain its true herpetological diversity.


Assuntos
Lagartos , Animais , Ecossistema , Genes Mitocondriais , Ilhas , Malásia , Filogenia
8.
Zootaxa ; 4656(3): zootaxa.4656.3.11, 2019 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-31716818

RESUMO

A new species of Ansonia is described from the Shan Plateau of Myanmar based on an integrative taxonomic analysis that differentiates it from all other congeners. Molecular phylogenetic analyses based on the mitochondrial genes 12S and 16S rRNA and tRNA-val recover A. kyaiktiyoensis sp. nov. as the sister species to A. inthanon from Thailand but differs from it and other congeners by at least a 5.0% sequence divergence. It is further differentiated by the following combination of morphological characters: (1) maximum SVL 24 mm in males and females; (2) first finger shorter than second; (3) absence of interorbital and tarsal ridges; (4) presence of light-coloured interscapular spot; (5) presence of yellow rictal tubercle; (6) absence of wide, light-coloured patch below eye; (7) presence of large, discrete, bright-yellow submandibular spots along the underside of lower jaw; (8) iris yellow-gold; (9) presence of markings on the snout consisting of streaks below the eye to the lip, and on the canthus rostralis to the nostril; (10) dorsum grey-brown with orange-beige spots, a dark-brown X-shaped marking on the back surrounding the interscapular spot, and dark-coloured markings on rump; (11) fore- and hind limbs with orange-beige cross-bars; and (12) venter light-gray with yellow spotting, especially near flanks and underside of hind limbs. Ansonia kyaiktiyoensis sp. nov. is the westernmost known record for the genus and the only species west of the Salween Basin. Its discovery echoes the increasing number of herpetological discoveries being made in upland regions fringing the Ayeyarwady and Salween Basins.


Assuntos
Anuros , Bufonidae , Animais , Feminino , Masculino , Mianmar , Filogenia , RNA Ribossômico 16S , Tailândia
9.
Zootaxa ; 4646(3): zootaxa.4646.3.4, 2019 Jul 25.
Artigo em Inglês | MEDLINE | ID: mdl-31717003

RESUMO

A review of the taxonomic status of the Smooth Slug Snake (Asthenodipsas laevis) in Borneo resulted in the discovery of two previously unrecognised species from the highlands of Sabah, East Malaysia. Asthenodipsas jamilinaisi sp. nov. and A. stuebingi sp. nov. are presumed to be closely related to A. laevis based on similarities in pholidosis and patterning but can be separated from A. laevis by their dorsal scale rows of 15/15/15 vs 15/15/13 and the presence of a sharp vertebral keel. Asthenodipsas jamilinaisi sp. nov. can be further differentiated from A. stuebingi sp. nov. by the greatly enlarged size of the vertebral scales, higher number of ventrals in males (173-175 vs 165), higher number of subcaudals (53 vs 35-47) and colour pattern (dark overall with indistinct bands vs lighter head and body with clear, distinct bands and a dark neck patch). The discovery highlights the need for more careful examination of much of the herpetofauna of Borneo that still remains underestimated and understudied. There is an urgent need for continued surveys into its diversity and the collection of genetic material for integrated taxonomic revisions.


Assuntos
Colubridae , Distribuição Animal , Animais , Bornéu , Malásia , Masculino
10.
Toxins (Basel) ; 11(2)2019 02 06.
Artigo em Inglês | MEDLINE | ID: mdl-30736335

RESUMO

Trimeresurus nebularis is a montane pit viper that causes bites and envenomation to various communities in the central highland region of Malaysia, in particular Cameron's Highlands. To unravel the venom composition of this species, the venom proteins were digested by trypsin and subjected to nano-liquid chromatography-tandem mass spectrometry (LC-MS/MS) for proteomic profiling. Snake venom metalloproteinases (SVMP) dominated the venom proteome by 48.42% of total venom proteins, with a characteristic distribution of P-III: P-II classes in a ratio of 2:1, while P-I class was undetected. Snaclecs constituted the second most venomous protein family (19.43%), followed by snake venom serine proteases (SVSP, 14.27%), phospholipases A2 (5.40%), disintegrins (5.26%) and minor proteins including cysteine-rich secretory proteins, L-amino acid oxidases, phosphodiesterases, 5'-nucleotidases. The venomic profile correlates with local (painful progressive edema) and systemic (hemorrhage, coagulopathy, thrombocytopenia) manifestation of T. nebularis envenoming. As specific antivenom is unavailable for T. nebularis, the hetero-specific Thai Green Pit viper Monovalent Antivenom (GPVAV) was examined for immunological cross-reactivity. GPVAV exhibited good immunoreactivity to T. nebularis venom and the antivenom effectively cross-neutralized the hemotoxic and lethal effects of T. nebularis (lethality neutralizing potency = 1.6 mg venom per mL antivenom). The findings supported GPVAV use in treating T. nebularis envenoming.


Assuntos
Venenos de Crotalídeos/química , Venenos de Crotalídeos/toxicidade , Trimeresurus , Animais , Antivenenos/farmacologia , Desintegrinas/análise , Feminino , Hidrolases/análise , L-Aminoácido Oxidase/análise , Malásia , Masculino , Camundongos Endogâmicos ICR , Proteoma , Proteínas de Répteis/análise
11.
Zootaxa ; 4545(2): 230-248, 2019 Jan 17.
Artigo em Inglês | MEDLINE | ID: mdl-30790898

RESUMO

Since the book-formatted, monographic treatment of the lizards of Peninsular Malaysia, Singapore, and their adjacent islands by Grismer (2011), 47 additional species have been added to that fauna bringing the total to 174. One species, Cyrtodactylus stresemanni, was removed from the lizard fauna based on its likely mislabeled type locality; 44 species were described as new-29 gekkonids, 11 scincids, five agamids, and one dibamid; and three others, Cnemaspis narathiwatensis, Cyrtodactylus brevipalmatus, and Scincella melanosticta were recently discovered in northern Peninsular Malaysia. Taxonomic changes for seven previously described species occurring after 2011 are noted and significant, new locality records are documented here for additional species. The intent of this review is to provide an up to date peer-reviewed checklist for the lizard species of this region prior to a pending updated book monograph.


Assuntos
Lagartos , Animais , Ilhas , Malásia , Singapura
12.
J Proteomics ; 192: 246-257, 2019 02 10.
Artigo em Inglês | MEDLINE | ID: mdl-30243938

RESUMO

The Asiatic coral snakes are basal in the phylogeny of coral snakes. Although envenoming by the Asiatic coral snakes is rarely fatal, little is known about their venom properties and variability from the American coral snakes. Integrating reverse-phase high performance liquid chromatography and nano-liquid chromatography-tandem mass spectrometry, we showed that the venom proteome of the Malaysian banded or striped coral snake (Calliophis intestinalis) was composed of mainly phospholipases A2 (PLA2, 43.4%) and three-finger toxins (3FTx, 20.1%). Within 3FTx, the cytotoxins or cardiotoxins (CTX) dominated while the neurotoxins' content was much lower. Its subproteomic details contrasted with the 3FTx profile of most Micrurus sp., illustrating a unique dichotomy of venom phenotype between the Old and the New World coral snakes. Calliophis intestinalis venom proteome was correlated with measured enzymatic activities, and in vivo it was myotoxic but non-lethal to mice, frogs and geckos at high doses (5-10 µg/g). The venom contains species-specific toxins with distinct sequences and antigenicity, and the antibodies raised against PLA2 and CTX of other elapids showed poor binding toward its venom antigens. The unique venom proteome of C. intestinalis unveiled a repertoire of novel toxins, and the toxicity test supported the need for post-bite monitoring of myotoxic complication. SIGNIFICANCE: Malaysian banded or striped coral snake (Calliophis intestinalis) has a cytotoxin (CTX)-predominating venom proteome, a characteristic shared by its congener, the Malayan blue coral snake (Calliophis bivirgata). With little neurotoxins (NTX), it illustrates a CTX/NTX dichotomy of venom phenotype between the Old World and the New World coral snakes. The low toxicity of the venom imply that C. intestinalis bite envenoming can be managed via symptomatic relief of the mild to moderate pain with appropriate analgesia. Systemically, the serum creatine kinase level of patients should be monitored serially for potential complication of myotoxicity. The distinct antigenicity of the venom proteins implies that the empirical use of heterologous antivenom is mostly inappropriate and not recommended.

13.
Zootaxa ; 4514(1): 53-64, 2018 Nov 05.
Artigo em Inglês | MEDLINE | ID: mdl-30485952

RESUMO

The taxonomic position of the rare Selangor Mud Snake (Raclitia indica) Gray to other species of homalopsids has remained uncertain due to the scarcity of specimens in collections and the lack of genetic material for comparison. Here we report the first molecular phylogenetic examination of this species based on recently acquired material. The study recovered R. indica nested within the clade of advanced, fanged homalopsids and the sister species to Erpeton tentaculatus Lácèpede. We also present notes on variation observed in the new specimens as well as range extensions for the species.


Assuntos
Colubridae , Filogenia , Animais , Malásia
14.
Zootaxa ; 4500(4): 553-573, 2018 Oct 18.
Artigo em Inglês | MEDLINE | ID: mdl-30486050

RESUMO

A phylogenetic taxonomic analysis of a monophyletic subgroup of the salamandrid genus Tylototriton revealed that a newly discovered population from Ngar Su Village, 1 km south of Ywangan, Shan State, Myanmar is a new species and most closely related to T. shanorum from approximately 80 km to the west in the vicinity of Taunggyi, Shan State. Tylototriton ngarsuensis sp. nov. differs from other closely related species of Tylototriton on basis of varying combinations of characteristics associated with it shorter head, larger size, rib nodule morphology, and overall drab, very dark, coloration, along with its genetic differentiation. Tylototriton ngarsuensis sp. nov. also appears to breed later in the year than most other species. Unfortunately, this species like many other Asian newts, is being harvested for the pet and medicinal trade and given its restricted distribution, this could pose a serious threat to its long-term survival.


Assuntos
Jacarés e Crocodilos , Filogenia , Animais , Mianmar , Salamandridae
15.
Zootaxa ; 4438(3): 528-550, 2018 Jun 22.
Artigo em Inglês | MEDLINE | ID: mdl-30313134

RESUMO

A reassessment of the taxonomy of Lygosoma bampfyldei based on morphology and color pattern indicates that it is a species complex containing L. bampfyldei Bartlett, 1895 from the Rajang River, Sarawak and Croker Range, Sabah in East Malaysia; L. peninsulare sp. nov. from Bukit Larut, Perak and 13.5 km east of Jeli, Kelantan, Peninsular Malaysia; L. kinabatanganensis sp. nov. from the Kinabatangan District, Deramakot camp (=Deramakot Sabah Forestry Department), Sabah, East Malaysia; and L. schneideri Werner, 1900 from Djapura, Indragiri, Sumatra, Indonesia-resurrected herein from the synonymy of L. bampfyldei. The new taxonomy aligns itself well with a growing body of literature demonstrating that semi-fossorial and fossorial Sundaic skinks are more diverse than previously considered.


Assuntos
Lagartos , Animais , Bornéu , Cor , Indonésia , Malásia
16.
Zootaxa ; 4425(1): 87-107, 2018 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-30313468

RESUMO

Two new species of diminutive, sympatric, lowland, leaf-litter skinks of the genus Tytthoscincus Linkem, Diesmos Brown from the Sekayu region of Hulu Terengganu, Terengganu State in northeastern Peninsular Malaysia are described on the basis genetic and morphological data. One of the new species, T. monticolus sp. nov., was collected in a hilly riparian area along Sungai (=river) Bubu and is most closely related to an undescribed species from the Tembak Reservoir area. The other, T. keciktuek sp. nov. collected along Sungai Peres, is most closely related to T. perhentianensis Grismer, Wood, Grismer from Pulau (=island) Perhentian Besar. Sympatry and syntopy of multiple, specialized, unrelated, leaf-litter species of Tytthoscincus was previously only known from upland areas and these new species represent the first example of lowland of sympatry. More importantly, however, these endemic species add to a growing body of research and discoveries that continue to underscore the unrealized biodiversity of the riparian systems of Hulu Terengganu and the Sekayu region and their need for protection and continued study.


Assuntos
Lagartos , Simpatria , Animais , Biodiversidade , Ilhas , Malásia
17.
Zootaxa ; 4483(2): 295-316, 2018 Sep 21.
Artigo em Inglês | MEDLINE | ID: mdl-30313789

RESUMO

An integrative phylogenetic analysis recovers two new species of the gekkonid genus Hemiphyllodactylus (Bleeker) from the Shan Hills of eastern Myanmar. Hemiphyllodactylus ywanganensis sp. nov. and H. uga sp. nov. are nested within the eastern Myanmar clade of a previous genus-wide phylogenetic analysis and form a more exclusive monophyletic group with H. linnwayensis. These species differ from each other and all other Hemiphyllodactylus in having unique combinations of character states involving postmental and subcaudal scale morphology; maximum SVL; digital formulae; numbers of chin scales, circumnasals, intersupranasals (=postrostrals), labials, longitudinally arranged dorsal and ventral scales, and pore-bearing femoroprecloacal scales; as well as subtle differences in coloration and pattern. The phylogenetic affinities of the eastern Myanmar clade are similar to those of an endemic clade of Cyrtodactylus from the Shan Hills in that both are more closely related to Indochinese taxa east of Myanmar as opposed to other Indo-Burmese species. The discovery of these new species underscores the underappreciated herpetological diversity of limestone ecosystems as well as the remote nature of the rugged uplands of the Shan Hills and emphasizes the need for continued field work in this region.


Assuntos
Lagartos , Filogenia , Animais , Ecossistema , Mianmar
18.
Zootaxa ; 4446(4): 477-500, 2018 Jul 19.
Artigo em Inglês | MEDLINE | ID: mdl-30313871

RESUMO

A phylogenetic taxonomic analysis indicates that a newly discovered population of Cyrtodactylus from the vicinity of Ywangan Town in the Shan Hills, Shan State, Myanmar is a new species (C. ywanganensis sp. nov.) and the earliest diverging member of the linnwayensis group within the previously defined Indochinese clade. The DIVALIKE+J model of a BioGeoBEARS biogeographic analysis indicates that the Indochinese clade evolved in the Shan Hills and Salween Basin of eastern Myanmar and dispersed into Indochina on at least three separate occasions from 18.6-13.4 mya. Once there, uplift of the Tenasserim Mountains and Thai Highlands created the intermedius group, the oldhami group, and C. tigroides of western and southern Thailand which form sister lineages to the linnwayensis group, yathepyanensis group, and the sinyineensis group, respectively, of eastern Myanmar. Diverging lineages within the Indochinese clade highlight the importance of the Thai Highlands and Tenasserim Mountains in that group's evolution and speciation. The discovery of C. ywanganensis sp. nov. in karstic habitats in the Shan Hills continues to underscore the unrealized karst-associated herpetological diversity of this vast, relatively unexplored, upland region and the need for additional field studies.


Assuntos
Lagartos , Filogenia , Animais , Ecossistema , Mianmar , Tailândia
19.
Zootaxa ; 4441(2): 366-378, 2018 Jun 27.
Artigo em Inglês | MEDLINE | ID: mdl-30314015

RESUMO

The family Xenophidiidae is an extremely rare and little-known family of snakes that contains only two species, Xenophidion acanthognathus Günther Manthey and X. schaeferi Günther Manthey that are each known only from their holotypes. We report on the rediscovery of X. schaeferi from two new locations in southern Peninsular Malaysia. The new specimens differ markedly from the holotype of X. schaeferi in colour pattern and are more akin to the patterning of X. acanthognathus from Borneo. However, molecular analyses of one of the new specimens reveal that it only differs from the holotype of X. schaeferi by a minimum sequence divergence of 0.27%. An expanded description of the species based on these specimens is provided and phenotypic variation within the species is discussed. We also report the first record of the genus Xenophidion from West Sumatra, Indonesia. These sensational discoveries continue to underscore the fact that southern Peninsular Malaysia and upland areas of Southeast Asia in general still harbour unrealized herpetological diversity and are still in need of field research-based taxonomic studies.


Assuntos
Serpentes , Animais , Bornéu , Indonésia , Malásia
20.
PeerJ ; 6: e5575, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30258710

RESUMO

A phylogenetic taxonomy of species in the Cyrtodactylus peguensis group from the Ayeyarwady Basin of Myanmar is constructed based on color pattern, morphology, and molecular systematic analyses using the mitochondrial gene NADH dehydrogenase subunit 2. Newly collected samples from the type locality of C. peguensis and other localities indicate that this clade is endemic to central Myanmar and contains at least seven species, four of which are undescribed. Three species, including C. peguensis occur in the low hills of the Bago Yoma Range within the central portion of the Ayeyarwady Basin. Two of these, C. myintkyawthurai sp. nov. from the northern and central Bago Yoma and C. meersi sp. nov. which is syntopic with C. peguensis in the southern Bago Yoma are described herein. As more lowland hilly areas bordering, and within the Ayeyarwady Basin are surveyed, more new species of this group are likely to be discovered. These discoveries continue the recent surge of descriptions of new species of Cyrtodactylus that are being discovered in Myanmar.

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