Morphometric Analysis of Sumatran, Kalimantan, and Javan &lt;i&gt;Cyrtodactylus&lt;/i&gt;, which were Labelled as &lt;i&gt;Cyrtodactylus marmoratus&lt;/i&gt;, Revealed Undescribed Species

Fauzi, Muhammad Alif; Riyanto, Awal; Kurniawan, Nia

doi:10.22146/jtbb.66688

Cited by 2 publications

(1 citation statement)

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“…At least four potentially new species among the C. psarops group await formal description. We excluded Cyrtodactylus marmoratus Gray, 1831 from Sumatra as this species only occurs in Java ( O’Connell et al 2019 ) and morphometric assessment of specimens labelled as C. marmoratus showed that they did not belong to this species ( Fauzi et al 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Common but ignored: a new species of Cyrtodactylus (Chordata, Reptilia, Squamata, Gekkonidae) from lowland Sumatra Barat, Indonesia

Nugraha¹,

Ahda²,

Tjong³

et al. 2023

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The lowland region of Sumatra Barat has received little attention in previous biodiversity studies. Past studies have mainly focused on highland habitat and conservation areas. However, many populations of Cyrtodactylus in the lowland habitats of Sumatra Barat were not correctly identified. A phylogenetic tree based on the NADH dehydrogenase subunit 2 (ND2) gene showed that the lowland Sumatran population is the sister group of the Malaysian lowland species, C. semenanjungensis, together nesting within the agamensis group. The genetic divergence within the Sumatra Barat population is 0–4.2% and 18.3–20% to C. semenanjungensis. Further examination of morphological characters revealed that they differed from the sister clade and other Sumatran Cyrtodactylus members by a unique combination of characters such as absence of tubercle on brachium, presence of tubercle on ventrolateral fold, 32–41 paravertebral tubercles, 38–46 ventral scales, enlarged femoral scales, presence of precloacofemoral pores and 22–23 subdigital lamellae under fourth toe. Based on the morphological and molecular evidence, the lowland Sumatran population is herein described as a new species, increasing the number of species in Sumatra to seven. More comprehensive and intensive sampling efforts would most likely yield further discoveries in the group of Sumatran Cyrtodactylus in the near future.

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Section: Introductionmentioning

confidence: 99%

Common but ignored: a new species of Cyrtodactylus (Chordata, Reptilia, Squamata, Gekkonidae) from lowland Sumatra Barat, Indonesia

Nugraha¹,

Ahda²,

Tjong³

et al. 2023

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Singapore’s herpetofauna: updated and annotated checklist, history, conservation, and distribution

Figueroa¹,

Low

Lim

2023

Zootaxa

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Given Singapore’s location at the confluence of important maritime trading routes, and that it was established as a British East India Company trading post in 1819, it is unsurprising that Singapore has become one of the centres of natural history collecting and research in Southeast Asia. Despite its small size, Singapore is home to a diverse herpetofauna assemblage and boasts a rich herpetological history. The first systematic studies of Singapore’s herpetofauna (within the Linnaean binomial framework) date back to Stamford Raffles and the naturalists hired by him who first came to the island in 1819. Specimens that were collected during and after this time were deposited in museums worldwide. Over time, 39 species from Singapore were described as new to science. Due to the entrepôt nature of Singapore with its associated purchasing and trading of specimens (both alive and dead), poor record-keeping, and human introductions, numerous extraneous species from outside of Singapore were reported to occur on the island. Such issues have left a complicated legacy of ambiguous records and taxonomic complications concerning the identity of Singapore’s species-rich herpetofauna, many of which were only resolved in the past 30–40 years. By compiling a comprehensive collection of records and publications relating to the herpetofauna of Singapore, we construct an updated and more accurate listing of the herpetofauna of Singapore. Our investigation culminated in the evaluation of 309 species, in which we compiled a final species checklist recognising 166 species (149 native and 17 non-native established species). Among the 149 native species are two caecilians, 24 frogs, one crocodilian, 13 turtles (three visitors), 34 lizards, and 75 snakes. Of the 17 non-native species are five frogs, four turtles, six lizards, and two snakes. The remaining 143 species represent species to be excluded from Singapore’s herpetofauna species checklist. For each of the 309 species examined, we provide species accounts and explanatory annotations. Furthermore, we discuss Singapore’s herpetofauna from a historical and conservation perspective. Immediate deforestation and nationwide urbanisation following colonisation completely eliminated many species from throughout much of the country and restricted them to small, degraded forest patches. We hope this publication highlights the importance of publishing observations and serves as a valuable resource to future researchers, naturalists, biological consultants, and policy makers in initiating studies on species ecology, distribution, status, and promoting conservation efforts to safeguard Singapore’s herpetofauna.

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Morphometric Analysis of Sumatran, Kalimantan, and Javan <i>Cyrtodactylus</i>, which were Labelled as <i>Cyrtodactylus marmoratus</i>, Revealed Undescribed Species

Cited by 2 publications

References 13 publications

Common but ignored: a new species of Cyrtodactylus (Chordata, Reptilia, Squamata, Gekkonidae) from lowland Sumatra Barat, Indonesia

Common but ignored: a new species of Cyrtodactylus (Chordata, Reptilia, Squamata, Gekkonidae) from lowland Sumatra Barat, Indonesia

Singapore’s herpetofauna: updated and annotated checklist, history, conservation, and distribution

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Morphometric Analysis of Sumatran, Kalimantan, and Javan <i>Cyrtodactylus</i>, which were Labelled as <i>Cyrtodactylus marmoratus</i>, Revealed Undescribed Species

Cited by 2 publications

References 13 publications

﻿Common but ignored: a new species of Cyrtodactylus (Chordata, Reptilia, Squamata, Gekkonidae) from lowland Sumatra Barat, Indonesia

﻿Common but ignored: a new species of Cyrtodactylus (Chordata, Reptilia, Squamata, Gekkonidae) from lowland Sumatra Barat, Indonesia

Singapore’s herpetofauna: updated and annotated checklist, history, conservation, and distribution

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Resources

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Common but ignored: a new species of Cyrtodactylus (Chordata, Reptilia, Squamata, Gekkonidae) from lowland Sumatra Barat, Indonesia

Common but ignored: a new species of Cyrtodactylus (Chordata, Reptilia, Squamata, Gekkonidae) from lowland Sumatra Barat, Indonesia