Males of the species have a yellow head and forebody and light blue spots on the back and they live in low elevation forests of the Southern Western Ghats.
You’ve probably seen nature depicted in art, but how often do you see an artwork hiding in nature?
When they saw the back of a lizard in the Southern Western Ghats, a group of scientists from the Thackeray Wildlife Foundation in India were reminded of Van Gogh’s The Starry Night. As soon as they figured out it was a new species, it was only apt to name it in honour of the famous painter.
“Cnemaspis vangoghi is named for Dutch painter Vincent Van Gogh (1853–1890) as the striking colouration of the new species is reminiscent of one of his most iconic paintings, The Starry Night,” explains Ishan Agarwal, who took part in the study to describe the new lizard. Males of the species have a yellow head and forebody and light blue spots on the back and they live among rocks and occasionally buildings and trees.
Photo by Akshay Khandekar. License CC-BY 4.0
Together with his fellow researchers Akshay Khandekar and Tejas Thackeray, they found the new species during an expedition in April 2022 to the the Southern Western Ghats in Tamil Nadu, India. Now, they have published their findings in the peer-reviewed journal ZooKeys.
“Tamil Nadu is an exceptionally biodiverse state and we expect to name well over 50 new species of lizards by the time we are done [with our expeditions]!,” Ishan Agarwal says.
From left to right: Akshay Khandekar, Tejas Thackeray, Swapnil Pawar, Ishan Agarwal, Satpal Gangalmale, Vivek Waghe.
“I also had more than 500 tick bites during that summer trip, with the highest densities in the low-elevation, dry forests of Srivilliputhur, where the new species are found,” he adds.
Cnemaspis vangoghi is a small-sized gecko that can reach 3,4 cm in length. It was described as new to science together with another species of its genus, Cnemaspis sathuragiriensis, named for its type locality the Sathuragiri Hills.
Cnemaspis vangoghi and Cnemaspis sathuragiriensis. Photos by Akshay Khandekar. License CC-BY 4.0
“The two new species are distributed in low elevation (250–400 m asl.), deciduous forests of Srivilliputhur, and add to the five previously known endemic vertebrates from Srivilliputhur-Megamalai Tiger Reserve, Tamil Nadu, India,” Ishan Agarwal explains. They are diurnal and mainly active during the cool hours of the early morning and evening, found largely on rocks. So far, they have only been found in very restricted localities, “an interesting case of micro-endemism in low-elevation species,” he notes.
Research article:
Khandekar A, Thackeray T, Agarwal I (2024) Two new species of the Cnemaspis galaxia complex (Squamata, Gekkonidae) from the eastern slopes of the southern Western Ghats. ZooKeys 1196: 209-242. https://doi.org/10.3897/zookeys.1196.117947
Two red-tailed coral snakes have been observed competing over a caecilian in the first documented wild case of kleptoparasitism within the family Elapidae.
Kleptoparasitism, or food theft, is a well-documented behaviour in many animal species but is seldom reported among snakes in natural habitats.
Two Micrurusmipartitus snakes tugging prey in opposite directions. Credit: Henrik Bringsøe and Niels Poul Dreyer.
The observation, detailed in a recent study published in the open-access journal Herpetozoa by Henrik Bringsøe and Niels Poul Dreyer, showcases the two Micrurus mipartitus snakes engaging in a tug of war over the limbless amphibian.
Elapid snakes are venomous and among the deadliest serpents in the world. There are more than 400 species comprising a very diverse group of snakes such as mambas, cobras, kraits, taipans, tiger snakes, death adders, sea snakes and coral snakes.
The losing snake biting the body of the winning snake. Credit: Henrik Bringsøe and Niels Poul Dreyer.
The battle occurred in the dense rainforests of Valle del Cauca, western Colombia. Surprisingly, in the tussle, one snake also bit the body of the other. However, the researchers suggest this was likely accidental.
After 17 minutes of observation, the losing coral snake released its bite-hold on the caecilian. The winner then moved away from the losing snake which did not follow.
More footage of the battle. Credit: Henrik Bringsøe and Niels Poul Dreyer.
The study suggests that while such behaviours may be more common in captivity due to controlled environments, their occurrence in nature has been largely underreported, likely due to the elusive nature of these reptiles and the challenges of observing them in their natural habitats.
“Snakes in captivity do that often when only one prey is offered in a terrarium with two or more snakes. But it is rather surprising that it has not been observed more frequently in the wild.”
Henrik Bringsøe, lead author.
This case sheds light on the coral snake interactions with prey species. Caecilians, such as the one in this study, have shown remarkable adaptations such as toxin resistance and increased mucus production.
Henrik Bringsøe previously recorded snake feeding behaviour that was entirely new to science. Check out his guest blog post on the snakes that disembowel and feed on the organs of living toads.
Snake eating the organs of a toad. Credit: Winai Suthanthangjai.
Original source:
Bringsøe H, Dreyer NP (2024) Kleptoparasitism in Micrurus mipartitus (Squamata, Elapidae) competing for the same Caecilia sp. (Gymnophiona, Caeciliidae) in western Colombia. Herpetozoa 37: 77-84. https://doi.org/10.3897/herpetozoa.37.e112716
A group of scientists led by researchers of Khamai Foundation discovered five dazzling new species of eyelash vipers in the jungles and cloud forests of Colombia and Ecuador. This groundbreaking discovery was made official in a study published in the open-access journal Evolutionary Systematics.
Prior to this research, the captivating new vipers, now recognized as among the most alluring ever found, were mistakenly classified as part of a single, highly variable species spanning from Mexico to northwestern Peru. The decade-long study initiated with an unexpected incident wherein one of the authors was bitten by one of these previously undiscovered species.
Distribution of the palm pitvipers of the Bothriechis schlegelii species complex, including the five new species described in Arteaga et al. 2014.
Eyelash vipers stand out due to a distinctive feature: a set of enlarged spine-like scales positioned atop their eyes. These “lashes” bestow upon the snakes a formidable and fierce appearance, yet the true purpose of this feature remains unknown. What is definite, however, is that certain populations exhibit longer, and more stylized eyelashes compared to others. The variations in the condition of the eyelashes led researchers to hypothesize the existence of undiscovered species.
The clue that led the researchers to suspect that there were new species of eyelash vipers was the fact that some populations in the cloud forests of Ecuador had almost no “lashes.” Photos by Lucas Bustamante and Jose Vieira.
Eyelash vipers are also famous for another feature: they are polychromatic. The same patch of rainforest may contain individuals of the turquoise morph, the moss morph, or the gold morph, all belonging to the same species despite having an entirely different attire. “No two individuals have the same coloration, even those belonging to the same litter (yes, they give birth to live young),” says Alejandro Arteaga, who led the study.
For some of the species, there is a “Christmas” morph, a ghost morph, and even a purple morph, with the different varieties sometimes coexisting and breeding with one another. The reason behind these incredible color variations is still unknown, but probably enables the vipers to occupy a wide range of ambush perches, from mossy branches to bright yellow heliconias.
Yellow-pink morph of the Rahim’s Eyelash-Pitviper (Bothriechis rahimi). Photo by Alejandro Arteaga
Rahim’s Eyelash-Pitviper (Bothriechis rahimi). Photo by Lucas Bustamante
Black-and-yellow morph of the Hussain’s Eyelash-Pitviper (Bothriechis hussaini). Photo by Alejandro Arteaga
Brown morph of the Shah’s Eyelash-Pitviper (Bothriechis rasikusumorum). Photo by Jose Vieira
“Coffee” morph of Bothriechis klebbai. Photo by Elson Meneses
Where do these new snakes live?
Three of the five new species are endemic to the eastern Cordillera of Colombia, where they occupy cloud forests and coffee plantations. One, the Rahim’s Eyelash-Pitviper, stands out for occurring in the remote and pristine Chocó rainforest at the border between Colombia and Ecuador, an area considered “complex to visit” due to the presence of drug cartels. The Hussain’s Eyelash-Pitviper occurs in the forests of southwestern Ecuador and extreme northwestern Peru. The researchers outline the importance of conservation and research in the Andes mountain range and its valleys due to its biogeographic importance and undiscovered megadiversity.
The Chocó rainforest is home to four vipers of the Bothriechis schlegelii species complex, including two new species discovered by Arteaga et al. 2024. Photo by Lucas Bustamante
What’s with the venom?
“The venom of some (perhaps all?) of the new species of vipers is considerably less lethal and hemorrhagic than that of the typical Central American Eyelash-Viper,” says Lucas Bustamante, a co-author of the study. Lucas was bitten in the finger by the Rahim’s Eyelash-Pitviper while taking its pictures during a research expedition in 2013. “I experienced intermittent local pain, dizziness and swelling, but recovered shortly after receiving three doses of antivenom in less than two hours after the bite, with no scar left behind,” says Bustamante.
Researcher Alejandro Arteaga examines the fangs of Central American Eyelash-Pitviper (Bothriechis nigroadspersus) in the Darién jungle of Panamá.
How threatened are these new species?
One of the study’s key conclusions is that four of the species in the group are facing a high risk of extinction. They have an extremely limited geographic range and 50% to 80% of their habitat has already been destroyed. Therefore, a rapid-response action to save the remaining habitat is urgently needed.
Red-wine morph of the Central American Eyelash-Pitviper (Bothriechis nigroadspersus), photographed in the Caribbean Island Escudo de Veraguas, off the coast of Panamá. Photo by Alejandro Arteaga
Who is honored with this discovery?
Two of the new species of vipers, the Rahim’s Eyelash-Pitviper (Bothriechis rahimi) and the Hussain’s Eyelash-Pitviper (B. hussaini), are named in honor of Prince Hussain Aga Khan and Prince Rahim Aga Khan, respectively, in recognition of their support to protect endangered global biodiversity worldwide through Focused On Nature (FON) and the Aga Khan Development Network. The Shah’s Eyelash-Pitviper (B. rasikusumorum) honors the Shah family, whereas the Klebba’s Eyelash-Pitviper (B. klebbai) and the Khwarg’s Eyelash-Pitviper (B. khwargi) honor Casey Klebba and Dr. Juewon Khwarg, respectively, for supporting the discovery and conservation of new species.
Turquoise morph of the Ecuadorian Eyelash-Pitviper (Bothriechis nitidus). This species is endemic to the Chocó rainforest in west-central Ecuador. Photo by Alejandro Arteaga
What is next?
Khamai Foundation is setting up a reserve to protect a sixth new species that remained undescribed in the present study. “The need to protect eyelash vipers is critical, since unlike other snakes, they cannot survive without adequate canopy cover. Their beauty, though worthy of celebration, should also be protected and monitored carefully, as poachers are notorious for targeting charismatic arboreal vipers for the illegal pet trade of exotic wildlife,” warns Arteaga. Finally, he and his team encourage the support of research on the venom components of the new species of vipers. This will promote their conservation as well as help communities that regularly encounter eyelash pitvipers.
Original source:
Arteaga A, Pyron RA, Batista A, Vieira J, Meneses Pelayo E, Smith EN, Barrio Amorós CL, Koch C, Agne S, Valencia JH, Bustamante L, Harris KJ (2024) Systematic revision of the Eyelash Palm-Pitviper Bothriechis schlegelii (Serpentes, Viperidae), with the description of five new species and revalidation of three. Evolutionary Systematics 8(1): 15-64. https://doi.org/10.3897/evolsyst.8.114527
Follow Evolutionary Systematics on X and Facebook.
Researchers of Khamai Foundation and Liberty University have discovered a new species of coffee snake endemic to the cloud forests of northwestern Ecuador.
The new species is named Ninia guytudori, in honor of naturalist Guy Tudor, in recognition of the impact he has had on the conservation of South America’s birds through his artistry. Photo by Alejandro Arteaga.
Biologist Alejandro Arteaga first found the snake in Ecuador’s Pichincha province, while looking for animals to include in a book on the Reptiles of Ecuador.
“This is species number 30 that I have discovered, out of a target of 100,” he says.
Ninia guytudori from Santa Lucía Cloud Forest Reserve, Pichincha province. Photo by Jose Vieira
Like other coffee snakes, Tudors’s Coffee-Snake often inhabits coffee plantations, especially in areas where its cloud forest habitat has been destroyed. It is endemic to the Pacific slopes of the Andes in northwestern Ecuador, where it lives at elevations of between 1,000 and 1,500 m above sea level.
While it faces no major immediate extinction threats, some of its populations are likely to be declining due to deforestation by logging and large-scale mining.
The researchers hope that its discovery will highlight the importance of preserving the cloud forest ecosystem, and focus research attention on human-modified habitats that surround it such as coffee plantations and pastures.
Photographs of some specimens of Ninia guytudori: top, from Santa Lucía Cloud Forest Reserve, Pichincha province. Bottom, from Río Manduriacu Reserve, Imbabura province. Photos by Jose Vieira
The name of the new snake species honors Guy Tudor, “an all-around naturalist and scientific illustrator with a deep fondness for birds and all animals, in recognition of the impact he has had on the conservation of South America’s birds through his artistry,” the researchers write in their paper, which was recently published in Evolutionary Systematics.
“We are trying to raise funds for conservation through the naming of new species. This one helped us protect Buenaventura Reserve.
Research article:
Arteaga A, Harris KJ (2023) A new species of Ninia (Serpentes, Colubridae) from western Ecuador and revalidation of N. schmidti. Evolutionary Systematics 7(2): 317-334. https://doi.org/10.3897/evolsyst.7.112476
Follow Evolutionary Systematics on Facebook and X.
A new agamid joins Asia’s rich reptile fauna, officially described as new to science in the open-access journal ZooKeys.
Calotes wangi.
“From 2009 to 2022, we conducted a series of field surveys in South China and collected a number of specimens of the Calotes versicolor species complex, and found that the population of what we thought was Calotes versicolor in South China and Northern Vietnam was a new undescribed species and two subspecies,” says Yong Huang, whose team described the new species.
Calotes wangi hainanensis, a newly discovered subspecies of Calotes wangi.
Wang’s garden lizard (Calotes wangi) is less than 9 cm long, and one of its distinguishing features is its orange tongue.
“Calotes wangi is found in subtropical evergreen broad-leaved forests and tropical monsoon forests in southern China and northern Vietnam, mostly in mountainous areas, hills and plains on forest edges, arable land, shrub lands, and even urban green belts. It is active at the edge of the forest, and when it is in danger, it rushes into bushes or climbs tree trunks to hide. Investigations found that the lizards lie on sloping shrub branches at night, sleeping close to the branches,” says Yong Huang.
Calotes wangi.
It is active from April to October every year, while in the tropics it is active from March to November or even longer, and eats a variety of insects, spiders, and other arthropods.
For now, the researchers estimate that the new species is not threatened, but they do note that in some areas its habitat is fragmented.
Images of Calotes wangi’s habitat.
“In addition, their bodies are used medicinally and the lizards are also eaten,” they write in their research paper.
This is why they suggest that the local government strengthen the protection of their ecological environment and pay close attention to the population dynamics.
Research article:
Huang Y, Li H, Wang Y, Li M, Hou M, Cai B (2023) Taxonomic review of the Calotes versicolor complex (Agamidae, Sauria, Squamata) in China, with description of a new species and subspecies. ZooKeys 1187: 63-89. https://doi.org/10.3897/zookeys.1187.110704
Pseudomonas aeruginosa is a bacterial strain that can be responsible for several human diseases: the most serious include malignant external otitis, endophthalmitis, endocarditis, meningitis, pneumonia, and septicemia.
The environments in which these bacteria are most frequently found include soil, plants, and water. They can even be found on human and animal skin, without causing illness, in a process known as bacterial colonisation. Microbiological research can help establish the cause of certain infectious diseases, making it easier to choose the best treatment. This is why it is important to find a quick and easy way to identify these bacteria. A new study, published in the open-access journal BioRisk, explored this by applying spectroscopic techniques for quick analysis directly from an object, which, in this case, was turtle skin.
Sampling of biological material from turtle skin before further microbiological analysis and Raman spectroscopy.Credit Inta Umbraško
“Microbial organisms play key roles in animal health and ecology. The European pond turtle often lives in city Zoo gardens and private houses. Often, the most commonly found bacteria from turtle skin surfaces was Pseudomonas species,” says Aleksandrs Petjukevics of Daugavpils University, whose team conducted the study.
What is Raman spectroscopy?
“Classical microbiological research techniques have several disadvantages: first of all, it is a rather lengthy process. The minimum period is 3-4 days, but many days and even weeks may pass before the isolated pathogen is accurately identified, and it uses expensive chemicals and resources,” says Aleksandrs Petjukevics. As an alternative, spectrometry makes it possible to identify a prepared sample of a microorganism while reducing the identification time to 5-30 minutes.
Raman spectra represent an ensemble of signals that arise from the molecular vibrations of individual cell components of gram-negative bacteria, integrating over proteins, lipids, and carbohydrates. “This non-destructive chemical analysis technique provides detailed information about chemical structure, phase and polymorphy, crystallinity, and molecular interactions. It is based on the interaction of light with the chemical bonds within a material,” he says.
Research results and implications
The study’s findings showed that Pseudomonas bacteriacan be quickly identified using this detection technology, with excellent analytical and diagnostic sensitivity, making it a dependable technique.
Unlike other methods, this technique does not require long-term bacterial sample preparation and expensive reagents, which makes it promising for studying other strains of bacteria.
“This study demonstrated the ability to obtain fast and high-quality Raman spectra of bacterial cells using vibrational spectroscopy,” says Aleksandrs Petjukevics. “Raman spectroscopy can be considered an express method for identifying microorganisms. It holds great potential for future research involving different microorganisms.”
Research article:
Petjukevičs A, Umbraško I, Škute N (2023) Prospects and possibilities of using Raman spectroscopy for the identification of Pseudomonas aeruginosa from turtle Emys orbicularis (Linnaeus, 1758) skin. BioRisk 21: 19-28. https://doi.org/10.3897/biorisk.21.111983
Researchers recommend IUCN CPSG’s One Plan Approach to Conservation measures, which include both habitat conservation and increasing the number of threatened species in breeding stations and zoos.
Endangered psychedelic rock gecko (Cnemaspis psychedelica) Photo by Thomas Ziegler. Licence: CC-BY.
Further conservation measures are required to protect Vietnamese reptiles, such as the psychedelic rock gecko (Cnemaspis psychedelica), from habitat loss and overharvesting, concludes a new report, published in the open-access scientific journalNature Conservation.
Having identified areas of high reptile diversity and large numbers of endangered species, the study provides a list of the 50 most threatened species as a guide for further research and conservation action in Vietnam.
The study, based on the bachelor thesis of Lilli Stenger (University of Cologne, Germany), recommends IUCN CPSG’s One Plan Approach to Conservation measures, which, next to improved habitat conservation, also involves increasing the number of threatened species in breeding stations and zoos to maintain populations suitable for restocking.
“Modern zoos, as well as local facilities, can play a crucial role in not only conducting or financially supporting in situ conservation projects, that is to say in nature, but also by protecting species from extinction through maintaining ex situ assurance colonies to reinforce in situ conservation programs,”
said Prof. Dr. Thomas Ziegler, Vietnam conservation team member and coordinator from Cologne Zoo, Germany.
Endangered Truong Son pit viper or Quang Binh pit viper (Trimeresurus truongsonensis). Photo by Thomas Ziegler. Licence: CC-BY.
The scientists identified 484 reptile species known to Vietnam, aiming to provide a baseline to authorities, conservationists, rescue centers, and zoos, so they can follow up with appropriate conservation measures for endangered species. They note that the number is likely to go up, as the country is regarded as a top biodiversity hotspot, and the rate of new reptile species discoveries remains high.
According to the IUCN Red List, 74 of the identified species are considered threatened with extinction, including 34 endemic species. For more than half of Vietnam’s endemic reptiles (85 of 159), the IUCN Red List status is either missing or outdated, and further research is imperative for these species, the researchers say.
Vietnam has a high level of reptile diversity and an outstanding number of endemic species. The species richness maps in the study revealed the Central Annamites in central Vietnam to harbor the highest endemic species diversity (32 species), which highlights it as a site of particular importance for reptile conservation. Alarmingly, a protected area analysis showed that 53 of the 159 endemic species (33.2%) including 17 threatened species, have been recorded exclusively from unprotected areas, such as the Psychedelic Rock Gecko.
The Critically Endangered Annam pond turtle (Mauremys annamensis) is one of the most endangered turtle species in Vietnam and in the world. It is not known from any protected area. Despite likely being extinct in the wild, ex situ conservation programs have been implemented in time with a high number of individuals being kept and bred in zoos and stations and now ready for restocking actions. Photo by Thomas Ziegler. Licence: CC-BY.
In General, Vietnam is considered a country with high conservation priority due to habitat loss and overharvesting for trade, traditional medicine and food.
Globally, reptiles are considered a group of special conservation concern, as they play an important role in almost all ecosystems and often have relatively small distribution ranges, making them especially vulnerable to human threats.
***
Original source:
Stenger L, Große Hovest A, Nguyen TQ, Pham CT, Rauhaus A, Le MD, Rödder D, Ziegler T (2023) Assessment of the threat status of reptile species from Vietnam – Implementation of the One Plan Approach to Conservation. Nature Conservation 53: 183 221. https://doi.org/10.3897/natureconservation.53.106923
The U.S. Geological Survey has released a comprehensive synthesis of Burmese python science, showcasing results from decades of USGS-funded research on python biology and potential control tools. The giant constrictor now represents one of the most challenging invasive species management issues worldwide.
Occurrence records were obtained from a large geospatial database of invasive species reports (Early Detection & Distribution Mapping System) submitted by both researchers and the public. The map illustrates the chronology of python removals across southern Florida and represents the best professional estimate of the invasion front, which is not exact and will change over time.
“For the first time, all the science on python ecology and potential control tools has been consolidated into one document, allowing us to identify knowledge gaps and important research areas to help inform future python management strategies. This synthesis is a major milestone for Burmese python research; six years in the making, it represents the consensus of the scientific community on the python invasion,” said USGS Ecologist Jacquelyn Guzy, lead author for the publication.
Burmese pythons were confirmed to have an established breeding population in Everglades National Park in 2000. The population has since expanded and now occupies much of southern Florida. They consume a wide range of animals and have altered the food web and ecosystems across the Greater Everglades.
Photo by U.S. Geological Survey.Photo by Conservancy of Southwest Florida.Photo by U.S. Geological Survey.Burmese pythons.
The synthesis, which pulled together the expertise of scientists and managers nationwide, provides a breakdown of 76 prey species found in python digestive tracts, which primarily included mammals and birds, as well as two reptile species, American alligator and Green iguana. However, as the scientists noted, the number of animals may increase as the python population expands to new areas.
It also reports new findings including a summary of body sizes of pythons measured by state and federal agencies between 1995 and 2022, as well as descriptions of length-mass relationships, the estimated geographic spread of pythons over time, and a comprehensive assessment of all control tools explored to date.
Illustration by Natalie Claunch demonstrates typical features of the Burmese python.
One of the hallmark issues of the Burmese python invasion has been the difficulty of visually detecting or trapping pythons in an immense natural landscape, Guzy said. Pythons do not readily enter any type of trap, occupy vast stretches of inaccessible habitat, and camouflage extremely well within the subtropical Florida environment.
Examples of cryptic coloration contributing to low detection probability in representative habitat where Burmese pythons have been captured. White circles indicate pythons. Photos by
“Extremely low individual python detection rates hamper our ability to both estimate python abundance and expand control tools across the extensive natural landscape” says USGS Research Ecologist Kristen Hart, an author of the publication.
Because the Burmese python has spread throughout southern Florida, eradication of the population across the landscape is not possible with existing tools, the publication states. However, researchers at USGS and partner institutions are exploring potential novel techniques such as genetic biocontrol, that may one day provide an avenue towards larger-scale population suppression.
Eradication of the population across the landscape is not possible with existing tools, a new report states. USGS and partners are "exploring potential novel techniques such as genetic biocontrol, that may one day provide an avenue towards larger-scale population suppression."
In the meantime, important areas of research according to the publication include reproductive life history and estimation of demographic vital rates such as survival, to help managers evaluate and refine existing control tools. With improved control tools managers may be able to reduce population expansion and minimize the future impact of pythons on the environment.
The USGS python research over the past decades has been largely supported by the USGS Greater Everglades Priority Ecosystem Sciences (GEPES) Program with additional support from the USGS Biothreats and Invasive Species program.
Research article:
Guzy JC, Falk BG, Smith BJ, Willson JD, Reed RN, Aumen NG, Avery ML, Bartoszek IA, Campbell E, Cherkiss MS, Claunch NM, Currylow AF, Dean T, Dixon J, Engeman R, Funck S, Gibble R, Hengstebeck KC, Humphrey JS, Hunter ME, Josimovich JM, Ketterlin J, Kirkland M, Mazzotti FJ, McCleery R, Miller MA, McCollister M, Parker MR, Pittman SE, Rochford M, Romagosa C, Roybal A, Snow RW, Spencer MM, Waddle JH, Yackel Adams AA, Hart KM (2023) Burmese pythons in Florida: A synthesis of biology, impacts, and management tools. NeoBiota 80: 1-119. https://doi.org/10.3897/neobiota.80.90439
Story originally published by the USGS. Republished with permission.
Nestled amongst a chain of islands in the southern reaches of Southeast Asia, Timor-Leste occupies the eastern half of the island of Timor, the largest of the Lesser Sunda Islands that also include Bali and Komodo, the latter of which is home to the Komodo Dragon. In May 2002, Timor-Leste (officially the Democratic Republic of Timor-Leste) became the first sovereign nation in the 21st century and is currently the 4th youngest country in the world.
A view from the road between Dili and Baucau, Timor-Leste. Photo by Graham Crumb shared under a CC BY-SA 2.0 license.
Even though the country lies in the highly biodiverse region of Wallacea, its biodiversity is relatively poorly known, partly because decades of pre-independence violence and conflict have hindered biological surveys. In August 2022, a partnership between the Lee Kong Chian Natural History Museum (Singapore), Conservation International, and the Ministry of Agriculture and Fisheries of Timor-Leste conducted preliminary biological surveys across the eastern part of the island. The surveys specifically targeted remote and underexplored areas, such as the isolated mountain of Mundo Perdido (“Lost World” in Portuguese) and Nino Konis Santana National Park (NKS)—the first and largest national park in Timor-Leste.
An aerial view of Nino Konis Santana National Park, Timor-Leste. Photo by UN Photo/Martine Perret under a CC BY-NC-ND 2.0 license
NKS is an enormous park that covers 1,236 square kilometers of land and is mainly characterized by lowland tropical forests. In it, there are several limestone caves of archaeological importance, and it was in one of those caves that a new gecko species was found.
While surveying the Lene Hara cave during the day, a member of the research team caught a glimpse of a lizard scurrying on the ground before disappearing into a crevice. Dr. Chan Kin Onn, a herpetologist at the Lee Kong Chian Natural History Museum and the lead author of a study published in ZooKeys, sprung into action. Soon, he found himself wedged into a tight crevice in hopes of capturing the lizard.
Lene Hara cave, where the new species was found. Photo by Tan Heok Hui
“I couldn’t get to the lizard because the crack was too narrow, but I saw the rear half of its body and could tell that it was a bent-toed gecko from the genus Cyrtodactylus. New species of bent-toed geckos are being discovered all across Southeast Asia and due to the remoteness of the cave, the potential for this gecko to be a new species was high,” explained Dr. Chan.
Several hours later, under the cover of darkness, the team was back in the cave, this time equipped with flashlights. “Bent-toed geckos are usually nocturnal and can be skittish during the day. Our best chance at capturing them would be at night,” says Dr. Chan.True enough, after just one hour of looking, they collected ten specimens. A few weeks later, the gecko from Lena Hara cave was confirmed to be a new species based on DNA analysis and external morphological characteristics.
The new species of bent-toed gecko, Cyrtodactylus santana. Photo by Chan Kin Onn
The new species is named Cyrtodactylussantana, in reference to Nino Konis Santana National Park. The park’s name honors Nino Konis Santana, a freedom fighter who led the Falintil militia against the Indonesian occupation of Timor-Leste.
Even though past surveys have documented several populations of bent-toed geckos in Timor-Leste, none of them had been identified to the species level and thus, remain unnamed. Cyrtodactylussantana is the first bent-toed gecko in Timor-Leste formally described as a species.
The expedition also discovered several interesting plants and crabs that are currently being examined, all of which have the potential to be new species. “We have barely scratched the surface of Timor-Leste’s biodiversity. New discoveries can have profound impacts, because Timor-Leste is a substantial landmass bounded by deep sea trenches and is located at the fringe of the Wallacean Biodiversity Hotspot and Weber’s Line, a transitional zone between Oriental and Australasian fauna” remarked the researchers. Understanding the biodiversity of Timor-Leste could provide key insights into the divergence, evolution, and distribution of species, they believe.
Research article:
Chan KO, Grismer LL, Santana F, Pinto P, Loke FW, Conaboy N (2023) Scratching the surface: a new species of Bent-toed gecko (Squamata, Gekkonidae, Cyrtodactylus) from Timor-Leste of the darmandvillei group marks the potential for future discoveries. ZooKeys 1139: 107-126. https://doi.org/10.3897/zookeys.1139.96508
Pterosaurs, the flying reptiles of the dinosaur era, originated in the Late Triassic (227 million years ago) and became extinct at the end-Cretaceous extinction event (66 million years ago). With wing spans ranging from 1 to 12 meters, they dominated the world’s skies for more than 160 million years.
The first described and named pterosaur – and namesake of the whole group – is Pterodactylus from the famous Solnhofen Limestone of Bavaria, southern Germany. Originally described in 1784 by the Italian naturalist Cosimo Alessandro Collini, the fossil was considered to be an aquatic animal for 25 years, before Georges Cuvier found out it was a flying reptile belonging to a new, previously unrecognized group.
The oldest specimen of this iconic pterosaur was recently found near Painten, a small town in the southern part of the Franconian Alb in central Bavaria. The fossil, described in a study in the journal Fossil Record, is about one million years older than other Pterodactylus specimens.
The specimen was unearthed in 2014 during excavations in an active limestone quarry. It took more than 120 hours of meticulous mechanical work using pneumatic tools and needles before the researchers could study it. The research team behind the discovery are Felix Augustin, Andreas Matzke, Panagiotis Kampouridis and Josephina Hartung from the University of Tübingen (Germany) and Raimund Albersdörfer from the Dinosaurier Museum Altmühltal (Germany).
“The rocks of the quarry, which yielded the new Pterodactylus specimen, consist of silicified limestone that has been dated to the upper Kimmeridgian stage (around 152 million years ago)”, explains Felix Augustin of the University of Tübingen, who is the lead author of the study. “Previously, Pterodactylus had only been found in younger rocks of southern Germany belonging to the Tithonian stage that follows after the Kimmeridgian”.
The specimen is a complete, well-preserved skeleton of a small-sized individual. “Only a very small portion of the left mandible as well as of the left and right tibia is missing. Otherwise, the skeleton is nearly perfectly preserved with every bone present and in its roughly correct anatomical position”, the researchers write in their study.
With a 5-cm-long skull, the Painten Pterodactylus represents a rare “sub-adult” individual. “Generally, the Pterodactylus specimens are not evenly distributed across the full size range but predominantly fall into distinct size-classes that are separated by marked gaps. The specimen from Painten is a rare representative of the first gap between the small and large sizes,” explains Augustin. “The Painten Pterodactylus was of an intermediate, and rarely found, ontogenetic age at the time of its death, between two consecutive year-classes.”
The Painten quarry has yielded many other “exquisitely preserved fossils”, including ichthyosaurs, turtles, marine and terrestrial crocodile-relatives, and dinosaurs. Many of them, like this new pterosaur specimen, are on display in the new Dinosaurier Museum Altmühltal in Denkendorf (Bavaria, Germany).
Research article:
Augustin FJ, Kampouridis P, Hartung J, Albersdörfer R, Matzke AT (2022) The geologically oldest specimen of Pterodactylus: a new exquisitely preserved skeleton from the Upper Jurassic (Kimmeridgian) Plattenkalk deposits of Painten (Bavaria, Germany). Fossil Record 25(2): 331-343. https://doi.org/10.3897/fr.25.90692
