A group of researchers from the Mississippi Entomological Museum taking break after exploring a site in Texas for grasshoppers. Left to right: Brady Dunaway, JoVonn Hill, Matthew Thorn. Photo by JoVonn Hill
The central region of Texas is a known hotspot of biological wonders. For the last five years, Dr. JoVonn Hill, an Assistant Professor and Director of the Mississippi Entomological Museum (MEM) at Mississippi State University, and his colleagues have made scientific expeditions to the area that have now revealed an extraordinary find.
The team uncovered seven previously unknown flightless grasshopper species, six of them endemic to the Edwards Plateau, which underscores the region’s extraordinary biodiversity.
With this discovery, Dr. Hill is paying tribute to two iconic musicians. In recognition of the “immense contributions” of Texas legends Willie Nelson and Jerry Jeff Walker, he has named two of these flightless grasshopper species after them.
Melanoplus nelsoni held by Dr. JoVonn Hill. Photo by JoVonn Hill
“Melanoplus nelsoni and Melanoplus walkeri immortalize the enduring contributions of these legendary musicians and their connection to Texas,” he says.
Melanoplus walkeri.
“After these last few summers [of field studies], just like Mr. Nelson, we too have a little Texas in our souls,” he writes in his study, which was just published in the journal ZooKeys.
On Melanoplus walkeri, he writes: “Walker’s songs such as Hill Country Rain, Leavin’ Texas, and Sangria Wine brought me and my field team joy while traveling between field sites and added to the amazing ambiance of the Edwards Plateau.” In fact, the artist recorded his most influential album not far away from the spot where the new species was discovered.
Additionally, the team acknowledges the cultural heritage and deep connection to the region of the Comanche and Tonkawa tribes, naming two species after them, Melanoplus commanche and Melanoplus tonkawa respectively.
“These designations recognize the profound historical and cultural significance of the tribes in the region,” Dr. Hill explains.
Melanoplus tonkawa.
“These seven newly described species, alongside two preexisting ones, form a cohesive species group, highlighting their shared characteristics and evolutionary relationships,” Dr. Hill says in conclusion. “The formation of this new species group presents a significant contribution to our understanding of the diverse ecosystems present in central Texas,” he adds.
Melanoplus commanche.
The discovery of these seven flightless grasshopper species and the formation of a new species group underscore the ecological uniqueness of central Texas, Dr. Hill says. He and the staff of the Mississippi Entomological Museum remain committed to scientific exploration and understanding, promoting the conservation of biodiversity, and inspiring a sense of wonder and appreciation for the natural world.
Research article:
Hill JG (2023) Diversification deep in the heart of Texas: seven new grasshopper species and establishment of the Melanoplus discolor species group (Orthoptera, Acrididae, Melanoplinae). ZooKeys 1165: 101-136. https://doi.org/10.3897/zookeys.1165.104047
Tetrigidae, commonly known as pygmy grasshoppers, are an ancient and diverse family, currently numbering about 2000 species. As their name suggests, tetrigids are very small; their largest representatives are barely several centimeters long, so they might be difficult to spot on a casual stroll through tropical vegetation. However, when they are spotted, they are immediately recognizable by their elongated pronotum, a hard structure that starts behind the head and covers the entire body like a hood. They come in many shapes and colors and are often exciting to see, but this comes with a price—the taxonomy of Tetrigidae, the way they are organized into natural groups, is a mess. This is where we come in.
In our latest paper, we dealt with Choriphyllini, a small Caribbean tribe that belongs to the subfamily Cladonotinae. This subfamily had been filling up with unrelated but similar-looking tetrigids for more than a century. It had never been clearly defined so almost everything wingless and robust was assigned to Cladonotinae. We decided to put an end to this by slowly removing the superficially similar genera from the subfamily and describing tribes to group the genera that are clearly related to each other. We piloted this system just last year, when we described the tribe Valalyllini from Madagascar, with only two endemic (and endangered) genera and species.
The diversity and the distribution of the tribe Valalyllini, the Malagasy dead-leaf-like Cladonotinae. Both species are endemic to small areas and are likely endangered because of deforestation. Both species most probably inhabit rainforest leaf litter.
Put the species of Choriphyllini and Valalyllini together, mix them up, and try to guess which belongs where—this is no simple task; they are all doing their impressions of dead leaves that our primate brains struggle to differentiate. And there’s more: such leaf-like grasshoppers live in Africa and South East Asia as well, and then there are those that look like twigs and spiky tree bark.
Only now that we have an idea of what the true Cladonotinae are can we be properly amazed by the duality they represent to us. On the one hand, they are incredibly diverse with every species having its own variation on the basic shape. On the other, they are so alike that they either represent the best example of convergent evolution ever documented or they all stem from a common ancestor that is currently supposed to have lived during the Mesozoic. The evolutionary history of Cladonotinae will take many years to unravel, but the work can only begin after we define what to call by that name.
Valalyllum folium, a member of the tribe Valalyllini, subfamily Cladonotinae. This species, endemic to Madagascar, is a relative of Choriphyllini.
It only took 250 years
The first species of Choriphyllini, Phyllotettix rhombeus, was described in 1765 as Cicada rhombea, that is, as a member of an entirely different order of insects. Continuing in this manner, many authors (including the great Linnaeus himself) made many taxonomic and nomenclatural mistakes that compounded over the centuries and made these grasshoppers difficult to identify and refer to. It didn’t help that new species and new records kept being reported without being contextualized by comprehensive literature reviews. Like detectives, we followed the scattered crumbs of data and arrived at a synthesis that will make future research in the region much more pleasant.
Hancock’s plate I from the “Tettigidae of North America” shows leaf-like Caribbean species under the numbers 1), 2) and 7), but has many taxonomic and nomenclatural errors. 1) – Phyllotettix foliatus (= female holotype of Hancock’s Choriphyllum foliatum), 2) – Phyllotettix rhombeus (= Hancock’s Choriphyllum westwoodi), 7) – Choriphyllum saussurei. (= Hancock’s Phyllonotus saussurei). Source: Biodiversity Heritage Library, available at https://www.biodiversitylibrary.org/item/25899#page/10.
This is not where interesting facts about Phyllotettix rhombeus stop. While looking through the literature, we tried to extract the measurements of drawings. Most of the drawings had a scale bar printed next to them, but the archaic usage of “lines” as the standard measurement initially gave us some trouble. That is why at first we doubted one of our most fascinating discoveries: with the pronotal length measuring nearly 3 centimeters, Phyllotettix rhombeus is the largest tetrigid ever recorded! Many, many authors dealt with this species over the last 250 years, but this record was never made explicit.
It should not go unnoticed now that its proposed common name is “Jamaican Colossal Jumping Leaf”. Inspired by this, we took the measurements of the other species as well and made a figure where all the specimens are resized to a common scale, which shows the diversity of both shapes and sizes.
The genera and species of the tribe Choriphyllini. All specimens are drawn to scale.
Besides P. rhombeus, there are three more species in the genus Phyllotettix: P. plagiatus,P. foliatus, and P. compressus. All four of them are known only from Jamaica. P. foliatus and P. compressus are known from the Blue Mountains, but for the other two no precise localities are known; we still don’t know where exactly the largest tetrigid lives. The other genus of the tribe is Choriphyllum, also with four species. Three of them, C. sagrai, C. saussurei, and C. wallaceum live in Cuba, while C. bahamense is all alone on Hummingbird Cay island in the Bahamas. The easiest way to differentiate these two genera is a little strange but practical, the tallest point of the leaf-like crest in Choriphyllum species is in the front, while in Phyllotettix species it is in the back.
A map of all known Choriphyllini records. For three species, not a single precise locality is known.
Some Caribbean leaves dance and jump
For each species, we proposed a common name as a means to give these animals even more character. Names, such as “Jamaican Bitten Jumping Leaf” and “Old Cuban Dancing Leaf” may not be “official”, but they have certainly found their audience. The tweet in which we shared the collage of all the species was viewed over 17000 times; everyone was amazed by the pretty shapes and some even noted that they especially liked the crazy common names. We were very glad to see our scientific and artistic package that is Choriphyllini be so warmly received.
Another hit on Twitter, with over 20000 views, is the post showcasing the newly-described species from Cuba, Choriphyllum wallaceum. The holotype of this species has been awaiting description for a long time. We found it in Museo Nacional de Ciencias Naturales in Madrid, Spain, with a note from Ignacio Bolívar, the father of the Tetrigidae classification system. He referred to it as “Choriphyllum Seoanei” but never managed to publish it.
This “new” species presented us with the perfect opportunity to honor the 200th anniversary of Alfred Russel Wallace’s birth. Wallace is often called the “father of biogeography” but is all too often neglected when discussing the origins of the theory of evolution, with which Charles Darwin is considered synonymous. Wallace, with his independent arrival at the key concepts of the evolutionary theory, his correspondence with Darwin, and his staunch defense of Darwin’s ideas, was (and is) at the very least equal to Darwin and deserves much more recognition than he currently gets.
Choriphyllum wallaceum, a newly-described species from Cuba, named after Alfred Russel Wallace.
This is just the start
Choriphyllini are a pretty package, but one that merely introduces the real problem. The history of this tribe is long, yet we have very few specimens to work with. Although we have an understanding of how morphology varies within species, P. compressus and P. foliatus are not only suspiciously similar to each other, but they also live in the same general area of the Blue Mountains. It remains to be seen if they are in fact a single species.
Much more pressing is that we have only a vague idea of where these animals live and how their populations are impacted by various factors such as human activity and climate change—we do not have a baseline against which to assess their conservation status. Then there is the fact that there are many more islands in the Caribbean, making the possibility of discovering new Choriphyllini species on them real and exciting. We can only guess what the future holds for these neglected animals.
Old Cuban Dancing Leaf (Choriphyllum sagrai) in its natural environment among the leaf litter in Cuba, photographed by Sheyla Yong.
The stage is set; everything we know about this group is laid out in the paper and now there is no path but forward. Research is expensive, dedication to this work takes a certain kind of soul, and everything takes time. It is our sincere hope that someone someday takes this further. The pygmy jumping leaves will wait for as long as they can, on their islands, hopping without a care in the world.
References:
Deranja M, Kasalo N, Adžić K, Franjević D, Skejo J (2022) Lepocranus and Valalyllum gen. nov. (Orthoptera, Tetrigidae, Cladonotinae), endangered Malagasy dead-leaf-like grasshoppers. ZooKeys 1109: 1-15. https://doi.org/10.3897/zookeys.1109.85565
UC Berkeley entomologist Kipling Will discovered a specimen of Bembidion brownorum while sampling for insects near Freshwater Creek on former Gov. Jerry Brown’s ranch.
When University of California, Berkeley, entomologist Kipling Will first heard that former Gov. Jerry Brown was hosting field scientists on his Colusa County ranch, he jumped at the chance to hunt for beetles on the property.
“I reached out and said, ‘Hey, I want to sample your beetles,’” Will said. “And [Brown] was quite game to let me come up there.”
Will, a professor of environmental science, policy and management, has travelled to all corners of California to study carabid beetles, ground beetles that are important predators of other insects. But Will’s repeated visits to Brown’s ranch proved especially fruitful.
While sampling for insects near Freshwater Creek, Will collected a rare species of beetle that had never been named or described — and which, according to records, had not been observed by scientists in over 55 years. The new species will be named Bembidion brownorum, in honor of Brown and his wife, Anne Brown.
Former California Gov. Jerry Brown (right) and his wife, Anne Brown, with their dogs, Colusa and Cali, on the Browns’ Colusa County ranch. Photo courtesy Evan Westrup
“I’m very glad that [my ranch] is advancing science in some interesting and important ways,” said Brown, who has hosted a wild variety of field researchers, including geologists, anthropologists and botanists, on the property. “There are so many undiscovered species. I think it’s very important that we catalog and discover what we have and understand their impact on the environment — how it’s functioning and how it’s changing.”
Brown’s 2,500-acre ranch is about an hour’s drive north of Sacramento, in an agricultural region where most of the land is privately owned and insect biodiversity is historically understudied. For more than two years, Will has regularly sampled for insects on the ranch, sometimes even showing the beetles that he finds to the Browns.
Jerry Brown said his dedication to welcoming researchers onto his land is rooted in the ranch’s history as a stagecoach stop called Mountain House, and in his own interest in climate change and conservation.
“We don’t have stagecoach stop, but we have a place of gathering, of research and collaboration,” said Brown, who is currently chair of the California-China Climate Institute at UC Berkeley.
The location on Freshwater Creek where Kipling Will discovered the Bembidion brownorum beetle. Photo courtesy Kipling Will
After collecting a beetle at the ranch that didn’t resemble any species he was familiar with, Will called up Bembidion expert David Maddison, a professor of integrative biology at Oregon State University, to help identify the specimen. Together, the scientists used morphological and DNA analysis to confirm that the beetle represented a completely new species.
Will then combed through entomology collections at museums throughout California in search of other specimens that may have been unlabeled or misidentified. He found only 21 other specimens of the species, the most recent of which was collected in 1966.
UC Berkeley entomologist Kipling Will discovered a specimen of Bembidion brownorum while sampling for insects near Freshwater Creek on former Gov. Jerry Brown’s ranch. The species had not been observed by scientists in more than 55 years. Photo courtesy David Maddison
The lack of any more recent specimens indicated to him that the species likely collapsed during the second half of the 20th century, driven out of its natural habitat by rapid urbanization and agricultural development across the state.
“The sad truth is, [the species] has probably been in a huge decline. If you look at the places that it was found the ‘20s and ‘30s and ‘40s, almost none of that natural habitat is left,” Will said. “But we don’t know for sure. So, the thing to do is to get it out there, describe it and tell people, ‘Hey, look for this thing,’ because maybe we’ll find some place where it’s doing fine.
“Having access to Jerry’s ranch in Colusa County gives me the opportunity to really spend time sampling, to look for rare things like this.”
Will and Maddison describe Bembidion brownorum in a study published in the journal Zookeys.
Big for a Bembidion
To the naked eye, Bembidion brownorum isn’t particularly remarkable: The diminutive beetle is brown in color and measures around 5 millimeters in length, about the diameter of a standard pencil. But under magnification, it glows with a green and gold metallic shimmer.
The Bembidion brownorum beetle is approximately 5 millimeters long, slightly larger than other Bembidion beetles. The section of the insect behind the head, called the prothorax, is also larger than usual. Photo courtesy David Maddison
It was the unusual shape of the beetle’s prothorax, the segment of the insect that sits right behind its head, that first caught Will’s eye.
“I was looking at this one beetle thinking, ‘It just doesn’t fit any of the ones that I can identify,’” Will said. “The shape of prothorax is just not like any of the others.”
According to Maddison, Bembidion brownorum is also relatively large compared to other Bembidion beetles, which are usually closer to 3 to 4 millimeters in length.
“It’s big for a Bembidion,” Maddison said. “At first glance, it was pretty obvious that it was probably something new.”
With so few examples to study, it’s difficult to describe the lifestyle and behavior of Bembidion brownorum with any certainty, Will said. However, given where the beetle was found on Brown’s ranch — in the vicinity of Freshwater Creek, which occasionally dries into a series of trellis-like pools in the summer months — it is likely that the beetle lives near the edges of bodies of water that periodically flood and then evaporate.
The 21 historical specimens of Bembidion brownorum are housed at either the Essig Museum Entomology Collection at UC Berkeley or at the California Academy of Sciences in San Francisco, which both have insect specimens going back more than 100 years. The discovery highlights the vital importance of maintaining these collections for current and future research, the scientists said.
“One of the things that I find interesting about is that, before Kip found that specimen, there were already specimens in collections — there was this hidden diversity that people didn’t recognize,” Maddison said. “At one point, [the beetle] probably was much more widespread and much more common, and Kip and I have some ideas as to where you would target to try to find more.”
Drawers containing prepared specimens of carabid beetles that Kipling Will collected on Jerry Brown’s ranch. Photo courtesy Kipling Will
Previous specimens were collected at locations throughout the Central Valley and in the Los Angeles Basin, regions that have been transformed over the last century. While the beetle may still survive in some areas, Will said that the patchwork of private landownership may make it difficult to find.
“There is a lot of desire to conserve the environment and combat climate change, but in many cases, we’re not keeping up with the rate of extinction — we’re not able to describe the species that need to be described as fast as things are going extinct,” Will said. “And this certainly is true in California, where there are an awful lot of undescribed insects out there and not a lot being done to get them described. I think that having more knowledge of what they are and where they where they live is really fundamental.”
John S. Sproul of the University of Nebraska Omaha is also a co-author of the study. This research was supported by the Harold E. and Leona M. Rice Endowment Fund at Oregon State University.
Research article:
Maddison DR, Sproul JS, Will K (2023) Re-collected after 55 years: a new species of Bembidion (Coleoptera, Carabidae) from California. ZooKeys 1156: 87-106. https://doi.org/10.3897/zookeys.1156.101072
Press release originally published by Kara Manke, UC Berkeley. Republished with permission.
The so-called High Seas Treaty is a legal framework for the protection of marine biodiversity and responsible and equitable use of resources of areas beyond national jurisdiction (BBJN). Its draft, published on the 5th of March 2023, is the outcome of two decades of negotiations, and is part of the international effort to protect a third of the world’s biodiversity by 2030.
An unwavering dedication to the protection and conservation of biodiversity will be required to see the firm landing of this hopeful step.
On this occasion, we look back at some impactful studies published in our journals that have made waves, hopefully in the right direction towards impactful conservation measures and actions.
Following President Barack Obama’s expansion of the largest permanent Marine Protected Area on Earth (Papahānaumokuākea Marine National Monument) in 2016, a new species of coral-reef fish was named in his honour. The fish is the only known coral-reef species to be endemic to the Monument, and, despite its small size, it carries wide-reaching cultural and political significance as a reminder of how politics go hand in hand with science.
Former President of the United States, Barack Obama, arriving on Midway Atoll Midway on September 1, 2016 to commemorate his use of the Antiquities Act to expand the boundaries of the Papahānaumokuākea Marine National Monument. Dr. Sylvia Earle gives President Barack Obama a photograph of Tosanoides obama on Midway Atoll, from the film “Sea of Hope: America’s Underwater Treasures” premiered on National Geographic Channel on January 15, 2017. See also the news story on National Geographic.
Other studies from our flagship zoology journal ZooKeys have focused on the benthic megafauna and abyssal fauna of the Clarion-Clipperton Zone (CCZ) in the Pacific Ocean.
The Clarion-Clipperton Zone, managed by the International Seabed Authority, has been targeted by deep-sea mining interests. In the context of heightened concern over potential biodiversity loss, scientific research is crucial for informing policy-makers and the general public about the risks and outcomes of such initiatives.
The Clarion-Clipperton Zone, central Pacific Ocean (purple box), spanning 6 milllion km2. Knowledge of marine biodiversity in the area is crucial for its protection. Image source: A. Glover at al. (2016).
The rich biodiversity of the deep sea has also been documented in big-scale taxonomic inventories and checklists in the Biodiversity Data Journal.
The echinoderm Amphioplus cf. daleus Lyman, 1879. Image source: A. Glover at al.Hymenopenaeus cf. nereus observed in the UK-1 exploration contract area. Image source: Amon et al. (2017).
Going forward, the expansion of Marine Protected Areas should also ensure the implementation of policies for the methods of resource extraction and their equitable sharing and use among the world’s nations.
Over the next few years, we hope to see an ever increasing interest in biodiversity conservation - from the general public, stakeholders and policy makers, and, of course, research institutions.
We need to love what we protect in order to be able to protect it.
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OpenBiodiv is a biodiversity database containing knowledge extracted from scientific literature, built as an Open Biodiversity Knowledge Management System.
Apart from coordinating the Horizon 2020-funded project BiCIKL, scholarly publisher and technology provider Pensoft has been the engine behind what is likely to be the first production-stage semantic system to run on top of a reasonably-sized biodiversity knowledge graph.
OpenBiodiv is a biodiversity database containing knowledge extracted from scientific literature, built as an Open Biodiversity Knowledge Management System.
As of February 2023, OpenBiodiv contains 36,308 processed articles; 69,596 taxon treatments; 1,131 institutions; 460,475 taxon names; 87,876 sequences; 247,023 bibliographic references; 341,594 author names; and 2,770,357 article sections and subsections.
In fact, OpenBiodiv is a whole ecosystem comprising tools and services that enable biodiversity data to be extracted from the text of biodiversity articles published in data-minable XML format, as in the journals published by Pensoft (e.g. ZooKeys, PhytoKeys, MycoKeys, Biodiversity Data Journal), and other taxonomic treatments – available from Plazi and Plazi’s specialised extraction workflow – into Linked Open Data.
“I believe that OpenBiodiv is a good real-life example of how the outputs and efforts of a research project may and should outlive the duration of the project itself. Something that is – of course – central to our mission at BiCIKL.”
explains Prof Lyubomir Penev, BiCIKL’s Project Coordinator and founder and CEO of Pensoft.
“The basics of what was to become the OpenBiodiv database began to come together back in 2015 within the EU-funded BIG4 PhD project of Victor Senderov, later succeeded by another PhD project by Mariya Dimitrova within IGNITE. It was during those two projects that the backend Ontology-O, the first versions of RDF converters and the basic website functionalities were created,”
he adds.
At the time OpenBiodiv became one of the nine research infrastructures within BiCIKL tasked with the provision of virtual access to open FAIR data, tools and services, it had already evolved into a RDF-based biodiversity knowledge graph, equipped with a fully automated extraction and indexing workflow and user apps.
Currently, Pensoft is working at full speed on new user apps in OpenBiodiv, as the team is continuously bringing into play invaluable feedback and recommendation from end-users and partners at BiCIKL.
As a result, OpenBiodiv is already capable of answering open-ended queries based on the available data. To do this, OpenBiodiv discovers ‘hidden’ links between data classes, i.e. taxon names, taxon treatments, specimens, sequences, persons/authors and collections/institutions.
Thus, the system generates new knowledge about taxa, scientific articles and their subsections, the examined materials and their metadata, localities and sequences, amongst others. Additionally, it is able to return information with a relevant visual representation about any one or a combination of those major data classes within a certain scope and semantic context.
Users can explore the database by either typing in any term (even if misspelt!) in the search engine available from the OpenBiodiv homepage; or integrating an Application Programming Interface (API); as well as by using SPARQL queries.
On the OpenBiodiv website, there is also a list of predefined SPARQL queries, which is continuously being expanded.
“OpenBiodiv is an ambitious project of ours, and it’s surely one close to Pensoft’s heart, given our decades-long dedication to biodiversity science and knowledge sharing. Our previous fruitful partnerships with Plazi, BIG4 and IGNITE, as well as the current exciting and inspirational network of BiCIKL are wonderful examples of how far we can go with the right collaborators,”
The frog lives in the pristine streams of the Río Negro-Sopladora National Park, a protected area with thousands of hectares of almost primary forests in Ecuador.
“In a stream in the forest there lived a Hyloscirtus. Not a nasty, dirty stream, with spoor of contamination and a muddy smell, nor yet a dry, bare, sandy stream with nothing in it to perch on or to eat: it was a Hyloscirtus-stream, and that means environmental quality.” (adapted from the opening of “The Hobbit” by J. R. R. Tolkien)
A magnificent new species of stream frog from the Andes of Ecuador was named after J. R. R. Tolkien, creator of Middle-earth and author of famous fantasy works “The Hobbit” and “The Lord of the Rings. It lives in the pristine streams of the Río Negro-Sopladora National Park, a recently declared protected area that preserves thousands of hectares of almost primary forests in southeastern Ecuador.
Stream frogs are a group of amphibians that inhabit the high Andes of Venezuela, Colombia, Ecuado, Peru, and Bolivia. Their life is closely linked to the pure rivers and streams in the mountain areas of the Andes, hence the name “stream frogs”. The adults live in the riparian vegetation, and their tadpoles develop among the rocks of the rapid waters of the rivers.
The researchers, Juan C. Sánchez-Nivicela, José M. Falcón-Reibán, and Diego F. Cisneros-Heredia, named the new frog Hyloscirtus tolkieni in honour of one of their favourite writer. JRR Tolkien, a renowned author, poet, philologist and academic, is the creator of Middle-earth and the father of fantastic works such as “The Hobbit” and “The Lord of the Rings”. The amazing colours of this new frog species reminded them of the magnificent creatures from Tolkien’s fantasy worlds.
Expeditions carried out since 2020 in the Río Negro-Sopladora National Park in Ecuador have allowed the discovery of a large number of species yet unknown to science. A protected area since 2018, this national park, located in the south of the country, is home to large forested areas that remain unstudied.
“For weeks, we explored different areas of the Río Negro-Sopladora National Park, walking from paramo grasslands at 3,100 meters elevation to forests at 1,000 m. We found a single individual of this new species of frog, which we found impressive due to its colouration and large size.”, indicated Juan Carlos Sánchez Nivicela, associate researcher at the Museum of Zoology of the Universidad San Francisco de Quito USFQ and the National Institute of Biodiversity, and co-author of the study where the frog is described.
The Río Negro Stream Frog is easily differentiated from all its frog releatives by its appearance and unique colouration. It is relatively large (65 mm long), a greyish green back with yellow spots and black specks, and a pale pink and black iris. Its throat, belly and flanks as well as the undersides of its legs are golden yellow with large black spots and dots, and its fingers and toes have black bars and spots and broad skin stripes.
“The new species of frog has amazing colours, and it would seem that it lives in a universe of fantasies, like those created by Tolkien. The truth is that the tropical Andes are magical ecosystems where some of the most wonderful species of flora, funga, and fauna in the world are present. Unfortunately, few areas are well protected from the negative impacts caused by humans. Deforestation, unsustainable agricultural expansion, mining, invasive species, and climate changes are seriously affecting Andean biodiversity”, said Diego F. Cisneros-Heredia, director of the Museum of Zoology of the Universidad San Francisco de Quito USFQ and associate researcher of the National Institute of Biodiversity, and co-author of the study.
The species is still only known from one locality and one individual, so information is insufficient to assess its conservation status and the risk of extinction. However, the authors agree that it is urgent to establish research and monitoring actions to study its life history and ecology, as well as its population size and dynamics. In addition, they suggest exploring new sites where additional populations may exist, and assessing whether their long-term conservation is affected by any threats, such as invasive species, mining, emerging diseases, or climate change.
The description of new species is an important mechanism to support global strategies for the conservation of vulnerable environments, since it reveals the great wealth of biodiversity that is linked to countless natural resources and environmental services. For example, amphibians are important pest controllers and play vital ecological roles in the stability of nature. Unfortunately, 57% of amphibian species in Ecuador are threatened by extinction.
Research article:
Sánchez-Nivicela JC, Falcón-Reibán JM, Cisneros-Heredia DF (2023) A new stream treefrog of the genus Hyloscirtus (Amphibia, Hylidae) from the Río Negro-Sopladora National Park, Ecuador. ZooKeys 1141: 75-92. https://doi.org/10.3897/zookeys.1141.90290
Photos by Juan Carlos Sánchez-Nivicela / Archive Museo de Zoología, Universidad San Francisco de Quito
A new species of snake was described from western Panama. First documented in 1977 by Dr. Charles Myers, a scientist studying amphibians and reptiles throughout Panama, it was only now that it got a scientific description.
The new snake has been given the name Dipsas aparatiritos. The genus Dipsas includes the snailsuckers, a unique group of snakes that feed on soft-bodied prey including snails extracted from their shells, slugs, and earthworms. The species epithet “aparatiritos” is Greek for unnoticed: a reference to the fact that the snake had remained hidden in plain sight for over forty years at a very well-studied field site.
Live individual of Dipsas aparatiritos in Parque Nacional General de División Omar Torrijos Herrera photographed in the wild. Photo by Kevin Enge
Scientists Dr. Julie Ray, University of Nevada – Reno, Paola Sánchez-Martínez, Abel Batista, Daniel G. Mulcahy, Coleman M. Sheehy III, Eric N. Smith, R. Alexander Pyron and Alejandro Arteaga, have described the new species in a paper published in the open-access journal ZooKeys.
Dipsas aparatiritos has the characteristic bulbous head and brown-and-black patterning of many of the snakes in the genus. It looks very similar to its closest known relative, Dipsas temporalis, which is also found in Panama. It is now known that D. aparatiritos is endemic to, or known only from, the western and central parts of the country.
The Hidden Snail-eating Snake, Dipsas aparatiritos. Photo by Dr. Julie M. Ray
Panama has a rich diversity of snakes, with over 150 documented species in a country the size of Ireland or the U.S. state of South Carolina. Dr. Ray has documented over 55 species of snakes in Parque Nacional General de División Omar Torrijos Herrera where the newly described snake is best studied, and over 80 species in Coclé Province in Central Panama. She published a field guide, Snakes of Panama, in 2017.
Four individuals of Dipsas aparatiritos intertwined on one plant at Parque Nacional General de División Omar Torrijos Herrera. Photo by Noah Carl
Co-author of the species description Dr. Alex Pyron, The George Washington University, visited Parque Nacional General de División Omar Torrijos Herrera in June 2013 with Dr. Frank Burbrink, American Museum of Natural History. “That was my first trip to Central America,” he says. “We were able to see the after-effects of the amphibian declines. But I was struck by the diversity and abundance of snakes that were still present, including this species of snail-eater we have just described, the rare Geophis bellus [a small leaf litter snake known from just one specimen prior to this discovery] and an unusual Coralsnake.”
Despite being a new species, Dipsas aparatiritos is relatively common in Parque Nacional General de División Omar Torrijos Herrera and has been studied for years before it was described. Dr. Ray has published a paper about the diet of snail-eating snakes, where it was found that earthworms from bromeliads compose a large portion of the diet of Dipsas aparatiritos. She also co-authored a paper on trophic cascades following amphibian declines, where it was found that Dipsas aparatiritos actually was increasing in numbers due to a diet independent of amphibians.
The Hidden Snail-eating Snake, Dipsas aparatiritos. Photo by Dr. Julie M. Ray
Dipsas aparatiritos is already considered Near Threatened based on IUCN Red List standards. The snake is endemic to Panama and comes from a limited range in the cloud forests of mid-elevation, where at least 44% of the overall range has been deforested. In addition, as snakes are constantly persecuted by humans, almost all snake species are in danger of extinction in the near future. Efforts must be made to conserve these rare species, the researchers believe, especially as so many are just being described now.
“This work was a true collaboration of scientists from different countries each contributing their expertise to thoroughly understand this new species, morphologically and molecularly,” said Dr. Ray.
“We are in an exciting time in science. Naturalists and scientists must continue to document the natural world; there are many species out there yet to be found and described. The usage of molecular techniques is exciting and facilitates the confirmation of so many new species.”
Research article:
Ray JM, Sánchez-Martínez P, Batista A, Mulcahy DG, Sheehy III CM, Smith EN, Pyron RA, Arteaga A (2023) A new species of Dipsas (Serpentes, Dipsadidae) from central Panama. ZooKeys 1145: 131-167. https://doi.org/10.3897/zookeys.1145.96616
Biologists at Eawag have identified ten species of whitefish in the lakes of the Reuss river system. Of these, seven have been described as distinct species for the first time – although in two cases this required inspection of specimens from historical collections, since eutrophication of lakes in the 20th century also led to the extinction of fish species in Central Switzerland.
These seven whitefish were described as separate species for the first time, including the “Albeli” from Lake Lucerne, which now bears the name Coregonus muelleri in memory of the whitefish expert Rudolf Müller. Image by Eawag
The “Edelfisch” (Coregonus nobilis) was, after the smaller “Albeli”, the second most commonly caught species of whitefish in Lake Lucerne until, in the second half of the 20th century, phosphate from domestic wastewater and nutrient-rich run-off from farmland led to a massive increase in algal blooms. Compared to the lakes of the Central Plateau, nutrient levels in Lake Lucerne were moderate, and eutrophication was short-lived; even so, due to algal decomposition, oxygen was depleted in the deeper layers of the lake. The “Edelfisch”, which reproduces in the late summer at a spawning depth of 80 metres or more, suffered as a result. Shortly before nutrient inputs decreased following the ban on phosphates in detergents and the expansion of wastewater treatment plants, stocks of this species collapsed and it was considered to be extinct in 1980. Only from the late 1990s were individual specimens caught once again, unequivocally identified as C. nobilis in 2000 by the whitefish specialist and Eawag researcher Rudolf Müller.
Coregonus nobilis, Lake Lucerne, Switzerland.
Five whitefish species in Lake Lucerne
Coregonus nobilis, Lake Lucerne, Switzerland.
As the “Edelfisch” is now a protected species, Lake Lucerne has not lost any of its historically recorded whitefish species. Indeed, in addition to the familiar “Edelfisch”, “Albeli” and “Bodenbalchen”, Eawag scientists have identified two new species – two large whitefish, differing from the previously known species in their habits, morphological characteristics and genetic composition. The pelagic “Schwebbalchen” (Coregonus suspensus) probably lives permanently in the open water, not only for foraging but also for reproduction – a spawning behaviour only previously observed in the “Blaufelchen” (C. wartmanni) of Lake Constance. Occupying a position intermediate to the pelagic “Schwebbalchen” (C. suspensus) and the “Bodenbalchen” (C. litoralis) is the littoral “Schwebbalchen” (C. intermundia).
Lake Zug survivor
Coregonus supersum.
Particularly affected by eutrophication in the mid-20th century were whitefish in Lake Zug, which – like other Central Plateau lakes – was exposed to higher nutrient levels, for a longer period, than waterbodies further upstream. As only the uppermost water layers of this 200-metre-deep lake maintained oxygen levels sufficient to support fish, two whitefish species spawning in the depths of the lake died out – the (Lake Zug) “Albeli” (C. zugensis) and “Albock” (C. obliterus). Indeed, the Lake Zug “Albock” would have been completely forgotten if specimens had not been found by Eawag scientists Oliver Selz and Ole Seehausen in the historical Steinmann-Eawag Collection. Its morphology and historical accounts indicate that the Lake Zug “Albock” was a deep‑water specialist – a specialisation only otherwise observed to the same degree in the (likewise extinct) Lake Constance Kilch (C. gutturosus) and the (still extant) Lake Thun Kropfer (C. profundus).
The only whitefish species still found in Lake Zug today, spawning near the shore, is the “Balchen”. Testifying to its survival is its new scientific name – Coregonus supersum (“I have survived”).
Species endemic to each lake
Also new are the scientific names of the Lake Lucerne “Bodenbalchen” (C. litoralis) and “Albeli” (C. muelleri). For the morphological and genetic studies carried out by Oliver Selz and Ole Seehausen in order to revise the taxonomy of whitefish showed that almost every lake in Central Switzerland has its own species of “Albeli” and “Bodenbalchen”.
Previously, the “Albeli” of Lakes Zug and Lucerne had been classified as members of the same species (C. zugensis), while the “Balchen” spawning near the shore of the various Central Swiss lakes were known as C. suidteri. These collective species names have now been inherited by the extinct Lake Zug “Albeli” (C. zugensis) and the Lake Sempach “Balchen” (C. suidteri).
The Lake Lucerne “Albeli” received the new name C. muelleri in honour of the fisheries biologist and whitefish specialist Dr Rudolf Müller (1944–2023).
Ruedi Müller with the then Lucerne fisheries and hunting administrator, Josef Muggli, catching whitefish. Photo by Robert Muggli, Archive
A reflection of Switzerland
The lakes of the Reuss river system are a reflection of Switzerland as a whole. Since the last ice age, at least 35 whitefish species evolved in the pre-alpine lakes, usually two or more in each lake. Switzerland lost a third of these species during the period of lake eutrophication around the middle of the 20th century. Many of the lost species are known to researchers only thanks to historical collections, such as that created before the eutrophication period by the naturalist Paul Steinmann and currently curated by the Natural History Museum of Bern.
Original source:
Selz OM, Seehausen O (2023) A taxonomic revision of ten whitefish species from the lakes Lucerne, Sarnen, Sempach and Zug, Switzerland, with descriptions of seven new species (Teleostei, Coregonidae). ZooKeys 1144: 95-169. https://doi.org/10.3897/zookeys.1144.67747
The enigmatic animals with beautiful shells are facing population declines and, possibly, even extinctions due to the activity of unregulated fisheries.
Guest blog post by Dr Gregory Barord, marine biology instructor at Central Campus and conservation biologist at the conservation organization Save the Nautilus
Nautiloids were once quite plentiful throughout the oceans, based upon the fossil record. Today, they are represented by just a handful of species, including the newly described Nautilus vitiensis of Fiji, Nautilus samoaensis of American Samoa, and Nautilus vanuatuensis of Vanuatu. These descriptions highlight the concept of allopatric speciation, or biogeographic isolation, where populations are geographically separated from other populations, resulting in a barrier to gene flow. Over time, these populations may eventually evolve into distinct species.
Nautilus samoaensis.
Nautilus trap construction. Photo by Gregory Barord
But what does it take to be able to collect the evidence needed to determine if three different populations of nautiluses are in fact three different species? For me, this is the best/worst part of the overall process, because nautilus fishing is not easy. For our team, it starts with building large, steel traps that are about a meter cubed. Then, we wrap the steel frame (ouch), with chicken wire (ouch) mesh (ouch), create an entry hole (ouch), attach it to a surface buoy with about 300 meters of fishing line, and bait it with (ouch) raw meat, usually chicken! Trap construction may take place on a nice beach or a bit inland in the rain or in a warm warehouse. Wherever it takes place, you will have some memories, I mean little scars, on your hands from working with the chicken wire. Looking down at my hands right now, I can remember where I was by looking at each of those scars… worth it!
Tossing the traps into the sea at dusk is the easy part. Load them on the boat, find the right depth, and tip them over the side of the boat. The hard part is retrieving the traps the next day, after about 12 hours of the raw chicken scent moving through the currents. There are a number of methods we’ve used to pull the traps up, from mechanical winches, hand-powered winches, float systems, boat pulls, and of course, just pulling with one hand at a time. Invariably, something happens in each location where we are just pulling the trap up from 300 meters one meter at a time, which takes a good half hour at least. But, at least you are getting a VERY good work-out. Eventually, you see the trap and these white little orbs in it and you know you’ve caught some nautiluses and the pulling is almost done, for now.
Nautilus trap in water with nautiluses in it. Photo by Gregory Barord
The next step might be my favorite. One of us jumps in the water and free dives about 5 meters to carefully (ouch, that chicken wire) reach for the nautiluses in the trap and bring them to the surface. You are face to face with these uniquely, misunderstood organisms who seem like this is just another day for them. For me, this is exhilarating! Once on the boat, they are placed in chilled seawater and from then on, the data collection happens fast. With the living organism in hand, you can start to glean even more of the differences between the species, examining the hood ornaments, or lack thereof. After some photos, measurements, and non-lethal tissue samples, the nautiluses are released and burped.
Nautilus vanuatuensis.
Maybe nautilus burping is my favorite part. To do this, we either dive with SCUBA or free dive with the nautiluses, and ensure there are no air bubbles trapped in the shell that may cause them to be positively buoyant. Imagine, you have one nautilus in each hand and you start swimming down, your feet and the nautilus tentacles pointed toward the surface. At a sufficient depth, you release them and observe their buoyancy. As the nautiluses compose themselves and jet back down to their nektobenthic habitat 300 meters below, you realize you may never see that individual nautilus again, and that nautilus may never see another human, well, maybe they will…
For me, the impetus for this publication in ZooKeysis rooted in nautilus conservation efforts. Over the last 20 years, I have studied nautiluses from many angles and for over 10 years now, have worked with an international team of folks to address nautilus conservation issues. For many nautiluses, probably millions, they were caught in much the same way that our team collected nautiluses. However, their first meeting with humans was their last as they were pulled from the trap, ripped from their protective shell, and tossed back in the ocean, used as bait, or, rarely, consumed. The shell is the attractive piece for shell traders and the living body has no value. It is like shark finning in that sense. As a direct result of these unregulated fisheries, populations of nautiluses have crashed, some have reportedly gone extinct, and international and country level legislation and regulations has been enacted.
A nautilus shell shop. Photo by Gregory Barord
Nautilus vitiensis.
Currently, there are no known fisheries in Fiji, American Samoa, or Vanuatu so the risk of these populations decreasing from fisheries is low, at the moment. Now, what is the risk to these same populations from ocean acidification, increased sedimentation, eutrophication, warming seas, and over-fishing of other species connected to the ecosystem nautiluses reside in? Right now, we simply do not know. Our conservation efforts started with simply counting how many nautiluses were left in different areas across the Indo-Pacific, then recording them in their natural habitat, then tracking their migrations, and now describing new species. There are still many questions to address regarding where they lay eggs, what they eat, and how they behave.
All nautiluses have long been grouped together when describing their natural history, but as we continue to uncover the nautilus story, it is increasingly obvious that each population of nautiluses is different, as exemplified by these three new species descriptions. This is certainly an exciting time for nautilus research, as we uncover more and more information about the secret life of nautiluses. I just hope that this is also an exciting time for nautiluses as well, and they continue doing their nautilus thing as they have done for millions of years.
Five new drop-dead-gorgeous tree-dwelling snake species were discovered in the jungles of Ecuador, Colombia, and Panama. Conservationists Leonardo DiCaprio, Brian Sheth, Re:wild, and Nature and Culture International chose the names for three of them in honor of loved ones while raising awareness about the issue of rainforest destruction at the hands of open-pit mining operations. The research was conducted by Ecuadorian biologist Alejandro Arteaga, an Explorers Club Discovery Expedition Grantee, and Panamanian biologist Abel Batista.
The mountainous areas of the upper-Amazon rainforest and the Chocó-Darién jungles are world-renowned for the wealth of new species continually discovered in this region. However, it is becoming increasingly clear that they also house some of the largest gold and copper deposits in the world. During the COVID-19 pandemic, the proliferation of illegal open-pit gold and copper mining operations in the jungles of Ecuador, Colombia, and Panama reached a critical level and is decimating tree-dwelling snake populations.
Illegal mining activity in the upper Ecuadorian Amazon doubled between 2021 and 2022. Photo by Jorge Anhalzer
Neotropical snail-eating snakes (genera Sibon and Dipsas) have a unique lifestyle that makes them particularly prone to the effects of gold and copper mining. First, they are arboreal, so they cannot survive in areas devoid of vegetation, such as in open-pit mines. Second, they feed exclusively on slugs and snails, a soft-bodied type of prey that occurs mostly along streams and rivers and is presumably declining because of the pollution of water bodies.
“When I first explored the rainforests of Nangaritza River in 2014, I remember thinking the place was an undiscovered and unspoiled paradise,” says Alejandro Arteaga, author of the research study on these snakes, which was published in the journal ZooKeys. “In fact, the place is called Nuevo Paraíso in Spanish, but it is a paradise no more. Hundreds of illegal gold miners using backhoe loaders have now taken possession of the river margins, which are now destroyed and turned into rubble.”
Biologist Alejandro Arteaga examines a snail-eating snake in the museum. Photo by Jorge Castillo
The presence of a conservation area may not be enough to keep the snail-eating snakes safe. In southeastern Ecuador, illegal miners are closing in on Maycu Reserve, ignoring landowner rights and even making violent threats to anyone opposed to the extraction of gold. Even rangers and their families are tempted to quit their jobs to work in illegal mining, as it is much more lucrative. A local park ranger reports that by extracting gold from the Nangaritza River, local people can earn what would otherwise be a year’s salary in just a few weeks. “Sure, it is illegal and out of control, but the authorities are too afraid to intervene,” says the park ranger. “Miners are just too violent and unpredictable.”
Gold mining activities in Napo, Ecuador. Photo by Ivan Castaneira
In Panama, large-scale copper mining is affecting the habitat of two of the new species: Sibon irmelindicaprioae and S. canopy. Unlike the illegal gold miners in Ecuador and Colombia, the extraction in this case is legal and at the hands of a single corporation: Minera Panamá S.A., a subsidiary of the Canadian-based mining and metals company First Quantum Minerals Ltd. Although the forest destruction at the Panamanian mines is larger in extent and can easily be seen from space, its borders are clearly defined and the company is under the purview of local environmental authorities.
Sibon irmelindicaprioae, named after Leonardo DiCaprio’s mother, is the rarest of the lot. It occurs in the Chocó-Darién jungles of eastern Panama and western Colombia. Photo by Alejandro Arteaga of Khamai Foundation.
“Both legal and illegal open-pit mines are uninhabitable for the snail-eating snakes,” says Arteaga, “but the legal mines may be the lesser of two evils. At the very least they respect the limit of nearby protected areas, answer to a higher authority, and are presumably unlikely to enact violence on park rangers, researchers, and conservationists.”
Gold mining activities in Napo province, Ecuador. Photo by Ivan Castaneira
Sibon canopy, one of the newly described species, appears to have fairly stable populations inside protected areas of Panama, although elsewhere nearly 40% of its habitat has been destroyed. At Parque Nacional Omar Torrijos, where it is found, there has been a reduction in the number of park rangers (already very few for such a large protected area). This makes it easier for loggers and poachers to reach previously unspoiled habitats that are essential for the survival of the snakes.
Sibon canopy is named in honor of the Canopy Family system of reserves, particularly its Canopy Lodge in Valle de Antón, Coclé province, Panama. Photo by Alejandro Arteaga
Lack of employment and the high price of gold aggravate the situation. No legal activity can compete against the “gold bonanza.” More and more often, farmers, park rangers, and indigenous people are turning to illegal activities to provide for their families, particularly during crisis situations like the COVID-19 pandemic, when NGO funding was at its lowest.
An Ecuadorian miner shows the gold she has collected and that she will use to pay for any family emergency. Photo by Ivan Castaneira
“These new species of snake are just the tip of the iceberg in terms of new species discoveries in this region, but if illegal mining continues at this rate, there may not be an opportunity to make any future discoveries,” concludes Alejandro Arteaga.
A gold mine in Nangaritza. Photo by Alejandro Arteaga
Fortunately, three NGOs in Ecuador and Panama (Khamai, Nature and Culture International, and Adopta Bosque) have already made it their mission to save the snake’s habitat from the emerging gold mining frenzy. Supporting these organizations is vital, because their quest for immediate land protection is the only way to save the snakes from extinction.
Research article:
Arteaga A, Batista A (2023) A consolidated phylogeny of snail-eating snakes (Serpentes, Dipsadini), with the description of five new species from Colombia, Ecuador, and Panama. ZooKeys 1143: 1-49. https://doi.org/10.3897/zookeys.1143.93601
