Known to science since 1857, a common species of true frog (a “true frog” is one assigned to the family Ranidae), found from north-eastern Honduras, through Nicaragua and Costa Rica to central Panama, turns out to have been keeping its “multiple identities” a secret all along.
According to British and Costa Rican herpetologists, who recently used DNA barcoding to study the species in question, what we currently call Warszewitsch’s frog is in fact a group of “cryptic” species. The study, conducted in the Área de Conservación Guanacaste (ACG), Costa Rica, by James Cryer, Dr Robert Puschendorf, Dr Felicity Wynne from the University of Plymouth, and Dr Stephen Price, UCL, is published in the open-access journal ZooKeys.
In their paper, the authors suggest that the well-known Central American frog species, commonly known as the Warszewitsch’s frog, may in fact consist of multiple different “cryptic” species. This phenomenon is well documented among tropical amphibian fauna, where high levels of genetic variation within populations of a single species surpass levels found between different, classified species.
Amplecting pair of Warszewitsch’s frogs in their natural habitat (Área de Conservación Guanacaste, Costa Rica). Photo by Dr Robert Puschendorf
By utilizing a technique known as DNA barcoding, which compares short snippets of DNA sequences between individuals sampled, the scientists analysed specimens from three different geographic areas within Costa Rica and Panama. In this case, the researchers used sequences derived from mitochondria, the energy-producing “power houses” found in animal cells. Their results indicated there was enough genetic variation to suggest cryptic species are indeed present.
The team chose this particular species because cryptic species were previously identified at two Panamanian sites. Now, the samples from Costa Rica broaden the study area, suggesting that there could be multiple species going by the name Warszewitsch’s frog all across its known distribution.
Conservation biologist and lead author James Cryer says:
“The next step will be to gather more samples throughout the full range of the species. Additionally, if we are to fully discern one species variant from another, further studies that compare the physical, behavioural and ecological characteristics of the frogs, alongside more genetic testing is needed.”
Overall, findings like these are important to help improve our understanding of amphibian biodiversity and, thus, work towards its conservation.
“If indeed there are multiple species, it may be that they have different ecological requirements, and therefore different approaches to their conservation are needed.” Cryer says. “This study further reinforces the power of DNA barcoding for rapid, preliminary species identification. Especially in the tropics, where habitat loss, climate change and infectious disease continually threaten many undescribed amphibian species.”
The World Register of Marine Species (WoRMS) announced the
Top 10 Marine Species of 2018 just in time for
Taxonomist Appreciation Day
What could be better timing to take a look back on the most spectacular animals described as new to science throughout 2018 than 19th March, Taxonomist Appreciation Day?
For the sixth time around, biologists from across the world are all hyped-up about this special date when we celebrate the experts who put things in order by giving names, identities and belonging to what the world has thought non-existent only a moment ago. After all, no sooner is a species formally acknowledged than it can be studied, understood and protected.
Having said that, at Pensoft and ZooKeys we’re immensely proud of becoming a prime publication choice for marine taxonomists from around the globe. Amongst them are the authors of not one or two, but FIVE exceptional animal curiosities, now recognised by a selected committee and the World Register of Marine Species (WoRMS), and featured in the TOP 10 Marine Species of 2018.
The “Japan Pig” which is also a… seahorse (Hippocampus japapigu)
Photo by Richard Smith.
We fail to find the obvious reason why locals diving in the waters of Hachijo-jima Island (Japan) had already likened this dazzling seahorse to a “tiny baby pig”, when a research team collected specimens and identified them as a species new to science. Naturally, the scientists assigned it with the name japapigu, which translates to “Japan Pig” in Japanese.
One thing is for sure, though, the stunning seahorse wouldn’t demand a degree in Zoology to attract anyone’s attention, had it not been for its expertise in camouflaging itself against the colourful algae-covered rocks.
News story by Douglas Main via National Geographic.
The crab that chooses an animal ‘blanket’ over a shell (Paguropsis confusa)
Photo by DST/NRF ACEP – Spatial Solutions project team.
Sure, who would go for a rigid shell left behind by a random gastropod – just like “ordinary” hermit crabs do – when they could reach for a light, soft and elastic “blanket” instead?
That’s exactly what the blanket-hermit crab Paguropsis confusa and its sibling species have been doing as they evolved to live in a cosy symbiosis with sea anemones. While the translucent anemone peacefully “shares” the crab’s meals and grows its zoophytes around the soft-bodied crustacean, the latter is free to easily draw them up and down – as if they were a real silky duvet – and even completely cover its head whenever it feels threatened.
The crab species name is“confuso”in reference to its morphological resemblance to the closely related species Paguropsis typica. In fact, had it not been for the similarity, what we now call Paguropsis confuso would’ve most likely been described well over a century ago.
I was previously unaware of the 'blanket hermit crab,' which gently tugs an anemone up around its body like a cozy snuggly blanket and WAIT WHAT???
Amidst ongoing talks and grim forecasts of declining coral reefs spelling demise for the world as we know it, the discovery of this endemic to Okinawa Island (Japan) flower-like octocoral comes as a stunning reminder of Nature’s supremacy.
Described as a new genus, as well as a species new to science, the octocoral was aptly named Hana hanagasa, where “Hana”translates to “flower” in Japanese, while “hanagasa” is a traditional Okinawan headpiece, crafted in the form of hibiscus and worn by female dancers at ceremonies.
The distinctly hairy-foot shrimp (Odontonia bagginsi)
Illustration by Franz Anthony.
Upon writing up the description of this species of Indonesian shrimp,Leiden University’s then BSc student Werner de Gier is unlikely to have thought twice before coming up with the name bagginsi, as in Frodo and Bilbo Baggins – the most famous hobbits from J. R. R.Tolkien’s The Lord of the Rings and The Hobbit.
After all, what the researcher was looking at was a creature tiny enough to call another marine invertebrate – a tunicate – its snug home. Also, it had extremely hairy feet, a feature that would require for the identification key for all members of the species group to be updated.
Hobbit Shrimp (Odontonia bagginsi)
Pros: + Hot off the press https://t.co/g4PhOnhPoF + Smol, hairy, lives in a hole – totally the shrimp version of Hobbits + Did not actually steal a ring
Con: – Refuses to leave its hole to visit nearby volcanoes
The ‘secretive’ dogfish shark from Hawai’i (Squalus hawaiiensis)
Photo by Dr Toby S. Daly-Engel.
One might think that an animal as large as a shark – especially if it’s the only shark species found in the waters of the Hawaiian Archipelago – would’ve “told” all its “secrets” by now, but that wasn’t the case with what we now refer to as the Hawaiian Spurdog.
Long mistaken for a stray population of a dogfish shark species originally from Japan, it wasn’t before US scientists deployed a range of elaborate tools used in species identification that it became apparent there was a previously unknown to science, short-ranged endemic shark trying to find shelter in Hawai’i.
Sadly, while the species is being depleted as bycatch, it has also demonstrated the lowest rate of genetic diversity known in a shark population to date.
#NewSpecies of deep-water dogfish #shark endemic to #Hawaii had previously been mistaken for the Shortspine #Spurdog originally described from Japanese waters.
Let us conclude with the words of ecologists and entomologist Dr Terry McGlynn, who started the Taxonomist Appreciation Day tradition in 2013:
“Even if you’re working on a single-species system, or are a theoretician, the discoveries and methods of systematists are the basis of your work,” he once told the Consortium of European Taxonomic Facilities (CETAF). “We need active work on taxonomy and systematics if our work is going to progress, and if we are to apply our findings. Without taxonomists, entire fields wouldn’t exist. We’d be working in darkness”.
One of the newly described bald-legged spider species Stormtropis muisca. It is also the highest altitudinal record for the family. Image by Carlos Perafan.
The new species are amongst the very first bald-legged spiders recorded in Colombia
Despite being widely distributed across north and central South America, bald-legged spiders had never been confirmed in Colombia until the recent study by the team of Drs Carlos Perafan and Fernando Perez-Miles (Universidad de la Republica, Uruguay) and William Galvis (Universidad Nacional de Colombia). Published in the open-access journal ZooKeys, their research paper describes a total of six previously unknown species inhabiting the country.
Four of the novel spiders were unable to fit into any already existing genus, so the scientists had to create a brand new one for them, which they called Stormtropis in reference to the Star Wars‘ clone trooper army known as Stormtroopers.
Considered to be amongst the most enigmatic in the group of mygalomorphs, the bald-legged spiders are a family of only 11 very similarly looking, small- to medium-sized species, whose placement in the Tree of Life has long been a matter of debate. In fact, it is due to their almost identical appearance and ability for camouflage that became the reason for the new bald-legged spider genus to be compared to the fictional clone troopers.
One of the most striking qualities of the bald-legged spiders (family Paratropididae) is their ability to adhere soil particles to their cuticle, which allows them to be camouflaged by the environment.
A bald-legged spider of the genus Paratropis in its natural habitat. Image by Carlos Perafan.
“The stormtroopers are the soldiers of the main ground force of the Galactic Empire. These soldiers are very similar to each other, with some capacity for camouflage, but with unskillful movements, like this new group of spiders,” explain the researchers.
“We wanted to make a play on words with the name of the known genus, Paratropis, and of course, we also wanted to pay tribute to one of the greatest sagas of all time”, they add.
One of the new ‘stormtrooper’ species (Stormtropis muisca) is also the highest altitudinal record for the family. It was recorded from an elevation of at least 3,400 m in the central Andes. However, the authors note that they have evidence of species living above 4,000 m. These results are to be published in future papers.
In the course of their fieldwork, the researchers also confirmed previous assumptions that the bald-legged spiders are well adapted to running across the ground’s surface. The spiders were seen to stick soil particles to their scaly backs as a means of camouflage against predators. More interestingly, however, the team records several cases of various bald-legged species burrowing into ravine walls or soil – a type of behaviour that had not been reported until then. Their suggestion is that it might be a secondary adaptation, so that the spiders could exploit additional habitats.
In conclusion, not only did the bald-legged spiders turn out to be present in Colombia, but they also seem to be pretty abundant there. Following the present study, three genera are currently known from the country (Anisaspis, Paratropis and Stormtropis).
A bald-legged spider (Paratropis elicioi) in its natural habitat. Image by Carlos Perafan.
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Original source:
Perafan C, Galvis W, Perez-Miles F (2019) The first Paratropididae (Araneae, Mygalomorphae) from Colombia: new genus, species and records. ZooKeys 830: 1-32. https://doi.org/10.3897/zookeys.830.31433
Data audit workflow provided for data papers submitted to Pensoft journals.
To avoid publication of openly accessible, yet unusable datasets, fated to result in irreproducible and inoperable biological diversity research at some point down the road, Pensoft takes care for auditing data described in data paper manuscripts upon their submission to applicable journals in the publisher’s portfolio, including Biodiversity Data Journal, ZooKeys, PhytoKeys, MycoKeys and many others.
Once the dataset is clean and the paper is published, biodiversity data, such as taxa, occurrence records, observations, specimens and related information, become FAIR (findable, accessible, interoperable and reusable), so that they can be merged, reformatted and incorporated into novel and visionary projects, regardless of whether they are accessed by a human researcher or a data-mining computation.
As part of the pre-review technical evaluation of a data paper submitted to a Pensoft journal, the associated datasets are subjected to data audit meant to identify any issues that could make the data inoperable. This check is conducted regardless of whether the dataset are provided as supplementary material within the data paper manuscript or linked from the Global Biodiversity Information Facility (GBIF) or another external repository. The features that undergo the audit can be found in a data quality checklist made available from the website of each journal alongside key recommendations for submitting authors.
Once the check is complete, the submitting author receives an audit report providing improvement recommendations, similarly to the commentaries he/she would receive following the peer review stage of the data paper. In case there are major issues with the dataset, the data paper can be rejected prior to assignment to a subject editor, but resubmitted after the necessary corrections are applied. At this step, authors who have already published their data via an external repository are also reminded to correct those accordingly.
“It all started back in 2010, when we joined forces with GBIF on a quite advanced idea in the domain of biodiversity: a data paper workflow as a means to recognise both the scientific value of rich metadata and the efforts of the the data collectors and curators. Together we figured that those data could be published most efficiently as citable academic papers,” says Pensoft’s founder and Managing director Prof. Lyubomir Penev.
“From there, with the kind help and support of Dr Robert Mesibov, the concept evolved into a data audit workflow, meant to ‘proofread’ the data in those data papers the way a copy editor would go through the text,” he adds.
“The data auditing we do is not a check on whether a scientific name is properly spelled, or a bibliographic reference is correct, or a locality has the correct latitude and longitude”, explains Dr Mesibov. “Instead, we aim to ensure that there are no broken or duplicated records, disagreements between fields, misuses of the Darwin Corerecommendations, or any of the many technical issues, such as character encoding errors, that can be an obstacle to data processing.”
At Pensoft, the publication of openly accessible, easy to access, find, re-use and archive data is seen as a crucial responsibility of researchers aiming to deliver high-quality and viable scientific output intended to stand the test of time and serve the public good.
From left to right: Trigonopterus asterix, T. obelix and T. idefix, three newly described species from Sulawesi (Indonesia). Image by Alexander Riedel.
The Indonesian island of Sulawesi has been long known for its enigmatic fauna, including the deer-pig (babirusa) and the midget buffalo. However, small insects inhabiting the tropical forests have remained largely unexplored.
Such is the case for the tiny weevils of the genus Trigonopterus of which only a single species had been known from the island since 1885. Nevertheless, a recent study conducted by a team of German and Indonesian scientists resulted in the discovery of a total of 103 new to science species, all identified as Trigonopterus. The beetles are described in the open-access journal ZooKeys.
“We had found hundreds of species on the neighboring islands of New Guinea, Borneo and Java – why should Sulawesi with its lush habitats remain an empty space?” asked entomologist and lead author of the study Dr Alexander Riedel, Natural History Museum Karlsruhe (Germany).
In fact, Riedel knew better. Back in 1990, during a survey of the fauna living on rainforest foliage in Central Sulawesi, he encountered the first specimens that would become the subject of the present study. Over the next years, a series of additional fieldwork, carried out in collaboration with the Indonesian Institute of Sciences (LIPI), managed to successfully complete the picture.
“Our survey is not yet complete and possibly we have just scratched the surface. Sulawesi is geologically complex and many areas have never been searched for these small beetles,” said Raden Pramesa Narakusumo, curator of beetles at the Museum Zoologicum Bogoriense (MZB), Indonesian Research Center for Biology.
Dense mountain forest of Central Sulawesi, where some of the new species have been found. Image by Alexander Riedel.
Why have all these beetles remained overlooked for so long?
Unlike the all-time favourite stag beetles or jewel beetles, tiny beetles that measure no more than 2-3 millimeters seem to have been attracting little interest from entomologists. Their superficial resemblance does not help identification either.
In fact, the modern taxonomic approach of DNA sequencing seems to be the only efficient method to diagnose these beetles. However, the capacity for this kind of work in Indonesia is very limited. While substantial evidence points to thousands of undescribed species roaming the forests in the region, there is only one full-time position for a beetle researcher at the only Indonesian Zoological Museum near Jakarta. Therefore, international collaboration is crucial.
103 newly discovered species of the genus Trigonopterus from Sulawesi. Image by Alexander Riedel.
103 beetle names
Coming up with as many as 103 novel names for the newly described species was not a particularly easy task for the researchers either. While some of the weevils were best associated with their localities or characteristic morphology, others received quite curious names.
A small greenish and forest-dwelling species was aptly named after the Star Wars character Yoda, while a group of three species were named after Asterix, Obelix and Idefix – the main characters in the French comics series The Adventures of Asterix. Naturally, Trigonopterus obelix is larger and more roundish than his two ‘friends’.
Other curious names include T. artemis and T. satyrus, named after two Greek mythological characters: Artemis, the goddess of hunting and nature and Satyr, a male nature spirit inhabiting remote localities.
Additionally, the names of four of the newly described beetles pay tribute to renowned biologists, including Charles Darwin (father of the Theory of Evolution), Paul D. N. Hebert (implementer of DNA barcoding as a tool in species identification) and Francis H. C. Crick and James D. Watson (discoverers of the structure of DNA).
Six-legged déjà vu
Back in 2016, in another weevil discovery, Dr Alexander Riedel and colleagues described four new species from New Britain (Papua New Guinea), which were also placed in the genus Trigonopterus. Similarly, no weevils of the group had been known from the island prior to that study. Interestingly, one of the novel species was given the name of Star Wars’ Chewbacca in reference to the insect’s characteristically dense scales reminiscent of Chewie’s hairiness. Again, T. chewbacca and its three relatives were described in ZooKeys.
The flightless beetle species Trigonopterus chewbacca, described as new to science in 2016. Image by Alexander Riedel.
On the origin of Trigonopterus weevils
Sulawesi is at the heart of Wallacea, a biogeographic transition zone between the Australian and Asian regions. The researchers assume that Trigonopterus weevils originated in Australia and New Guinea and later reached Sulawesi. In fact, it was found that only a few populations would one day diversify into more than a hundred species. A more detailed study on the rapid evolution of Sulawesi Trigonopterus is currently in preparation.
Future research
To help future taxonomists in their work, in addition to their monograph paper in ZooKeys, the authors have uploaded high-resolution photographs of each species along with a short scientific description to the website Species ID.
“This provides a face to the species name, and this is an important prerequisite for future studies on their evolution,” explained the researchers.
“Studies investigating such evolutionary processes depend on names and clear diagnoses of the species. These are now available, at least for the fauna of Sulawesi.”
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Original Source:
Riedel A, Narakusumo RP (2019) One hundred and three new species of Trigonopterus weevils from Sulawesi. ZooKeys 828: 1-153. https://doi.org/10.3897/zookeys.828.32200
For decades, it has been assumed that the Chinese Softshell Turtles from East Asia all belonged to one and the same species, Pelodiscus sinensis. Widely distributed all the way from the Russian Far East through the Korean Peninsula to China and Vietnam, the species was said to vary substantially in terms of its looks across localities. However, around the turn of the century, following a series of taxonomic debates, scientists revalidated or discovered a total of three species distinct from the ‘original’.
Recently, a Hungarian-Vietnamese-German team of researchers described a fifth species in the genus. Their discovery is published in the open-access journal ZooKeys.
The new species, which differs both genetically and morphologically from the other four, has well-pronounced dark blotches on the underside of its shell. The markings are also the reason why these turtles are going by the scientific name Pelodiscus variegatus, where “variegatus” translates to “spotted” in Latin.
“This morphological feature, among others, led to the discovery that these animals belong to a hitherto undescribed species,” explains Professor Dr. Uwe Fritz of the Senckenberg Natural History Collections in Dresden.
Unfortunately, the identification of multiple species within what used to be a single one has its potentially ill-fated consequences. While the Chinese Softshell Turtle was once considered widespread and not threatened, each newly discovered species “reduces” the individual population numbers.
“When we look at each species, the distribution range as well as the number of individuals is much smaller than when all were combined. Until now, the newly described Spotted Softshell Turtle was considered part of the Lesser Chinese Softshell Turtle Pelodiscus parviformis, which was discovered by Chinese researchers in 1997. Pelodiscus parviformis was already considered critically endangered. Now that its southern representatives have been assigned to a different species, the Spotted Softshell Turtle, the overall population size of each species is even smaller,” explains Balázs Farkas, the study’s Hungarian lead author.
Because of its restricted range and the levels of exploitation it is subjected to, the conservation status of the new species is proposed to be Critically Endangered, according to the criteria of the IUCN Red List of Threatened Species.
Habitat of the newly discovered softshell turtle, Pelodiscus variegatus. Photo by An Vinh Ong.
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Original source:
Farkas B, Ziegler T, Pham CT, Ong AV, Fritz U (2019) A new species of Pelodiscus from northeastern Indochina (Testudines, Trionychidae). ZooKeys 824: 71-86. https://doi.org/10.3897/zookeys.824.31376
Two females and eggs of the newly described species (Phrynobatrachus bibita). Photo by S. Goutte and J. Reyes-Velasco.
A new species of puddle froghas just been discovered by NYU Abu Dhabi researchers at the unexplored and isolated Bibita Mountain in southwestern Ethiopia. The research team named the new species Phrynobatrachus bibita sp. nov., or Bibita Mountain dwarf puddle frog, inspired by its home.
In summer 2018, NYU Abu Dhabi Postdoctoral Associates Sandra Goutte and Jacobo Reyes-Velasco explored an isolated mountain in southwestern Ethiopia where some of the last primary forest of the country remains. Bibita Mountain was under the radars of the team for several years due to its isolation and because no other zoologist had ever explored it before.
“Untouched, isolated, and unexplored: it had all the elements to spike our interest,” says Dr. Reyes-Velasco, who initiated the exploration of the mountain. “We tried to reach Bibita in a previous expedition in 2016 without success. Last summer, we used a different route that brought us to higher elevation,” he added.
Female (Phrynobatrachus bibita) next to egg clutches. Photo by S. Goutte and J. Reyes-Velasco.
Their paper, published in ZooKeys journal, reports that the new, tiny frog (17 mm for males and 20 mm for females) is unique among Ethiopian puddle frogs. Among other morphological features, a slender body with long legs, elongated fingers and toes, and a golden coloration, set this frog apart from its closest relatives.
“When we looked at the frogs, it was obvious that we had found a new species, they look so different from any Ethiopian species we had ever seen before!” explains Dr. Goutte.
Back in NYU Abu Dhabi, the research team sequenced tissue samples from the new species and discovered that Phrynobatrachus bibita sp. nov. is genetically different from any frog species in the region.
“The discovery of such a genetically distinct species in only a couple of days in this mountain is the perfect demonstration of how important it is to assess the biodiversity of this type of places. The Bibita Mountain probably has many more unknown species that await our discovery; it is essential for biologists to discover them in order to protect them and their habitat properly,” explains NYU Abu Dhabi Program Head of Biology and the paper’s lead researcher Stéphane Boissinot, who has been working on Ethiopian frogs since 2010.
/Original text by New York University Abu Dhabi, UAE./
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Original source:
Goutte S, Reyes-Velasco J, Boissinot S (2018) A new species of puddle frog from an unexplored mountain in southwestern Ethiopia (Anura, Phrynobatrachidae, Phrynobatrachus). ZooKeys 824: 53–70. https://doi.org/10.3897/zookeys.824.31570
New to science, the species was named after Pluto, the ruler of the underworld in Greek mythology
A diving beetle demonstrating various adaptations to the life underground, including depigmentation and evolutionary loss of eyes, was discovered at the bottom of a clay pound in the cave Soprador do Carvalho, Portugal. The species turned out to be the very first in the whole order of beetles (Coleoptera) to be known exclusively from the underground waters of the country.
The Soprador do Carvalho cave (Portugal) is the type locality of the newly described species Iberoporus pluto. Photo by Ignacio Ribera.
Despite not being able to find any other specimens during their study – save for the single female, the team of Dr Ignacio Ribera, Institute of Evolutionary Biology (Spain) and Prof Ana Sofia P. S. Reboleira, University of Copenhagen (Denmark) identified the beetle as new to science, thanks to its unambiguous morphology in combination with molecular data.
Profile view of the newly described species Iberoporus pluto. Photo by Ignacio Ribera.
Aptly named Iberoporus pluto in reference to the ruler of the underworld in Greek mythology Pluto, the species was recently described in the open-access journal ZooKeys.
With a uniformly pale orange body measuring 2.8 mm in length and 1.1 mm in its widest part, the beetle is larger than the rest species known in its genus, and its appendages are longer and more slender. While blindness and depigmentation are clear adaptation to life away from sunlight, the elongated limbs and antennae reflect poor swimming abilities needed in a subterranean habitat. Going for 4 km in horizontal direction, Soprador do Carvalho is the largest in the Dueça cave system, located in the north-eastern part of the Sicó karst area in central Portugal. In recent years, the cave is being explored for tourism.
“The knowledge of the subterranean fauna from Portugal has significantly increased over the last decade, with the description of a high number of obligate subterranean species (tripling their number) and the establishment of new biogeographic patterns,” explain the authors of the study. “A high number of these species are stygobiont (i.e. confined to groundwater), mostly from wells in the north of the country, where evapotranspiration is higher.”
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Original source:
Ribera I, Reboleira ASPS (2019) The first stygobiont species of Coleoptera from Portugal, with a molecular phylogeny of the Siettitia group of genera (Dytiscidae, Hydroporinae, Hydroporini, Siettitiina). ZooKeys 813: 21-38. https://doi.org/10.3897/zookeys.813.29765
An adult of the newly described species, Hyloscirtus hillisi. Photo by Gustavo Pazmiño, BIOWEB Ecuador.
A new treefrog species was discovered during a two-week expedition to a remote tabletop mountain at Cordillera del Cóndor, a largely unexplored range in the eastern Andes.
“To reach the tabletop, we walked two days along a steep terrain. Then, between sweat and exhaustion, we arrived to the tabletop where we found a dwarf forest. The rivers had blackwater and the frogs were sitting along them, on branches of brown shrubs similar in color to the frogs’ own. The frogs were difficult to find, because they blended with their background,” Alex Achig, one of the field biologists who discovered the new species comments on the hardships of the expedition.
Curiously, the frog has an extraordinary, enlarged claw-like structure located at the base of the thumb. Its function is unknown, but it could be that it is used either as a defence against predators or as a weapon in fights between competing males.
Having conducted analyses of genetic and morphologic data, scientists Santiago R. Ron, Marcel Caminer, Andrea Varela, and Diego Almeida from the Catholic University of Ecuador concluded that the frog represented a previously unknown species. It was recently described in the open-access journal ZooKeys.
Unlike other frogs, the new species has a claw at the base of the thumb. Photo by Gustavo Pazmiño, BIOWEB Ecuador.
The species name, Hyloscirtus hillisi, honors Dr. David Hillis, a member of the National Academy of Sciences of the United States of America, who discovered three closely related frog species in the same genus in the 1980s, while conducting a series of field trips to the Andes of southern Ecuador. Throughout his career, Dr. Hillis has made significant contributions to the knowledge of Andean amphibians and reptiles.
Ron SR, Caminer MA, Varela-Jaramillo A, Almeida-Reinoso D (2018) A new treefrog from Cordillera del Cóndor with comments on the biogeographic affinity between Cordillera del Cóndor and the Guianan Tepuis (Anura, Hylidae, Hyloscirtus). ZooKeys 809: 97-124. https://doi.org/10.3897/zookeys.809.25207
A metamorph of the new species, Hyloscirtus hillisi. Photo by Darwin Núñez, BIOWEB Ecuador.
Even though the short-neck clam is the major resource and export coming from Ashtamudi Lake in Kerala, India – the first fishery to be awarded with a a Marine Stewardship Council certification for sustainability in the country, a recent study found out that the mollusc had been subject to mistaken identity.
Further, this is not the first time when the species and genus name of this clam has been changed. At first, the species was identified as Paphia malabarica, which is also the name one could read in all hitherto published reports, including the Marine Stewardship Council’s register. Later on, as the name was proved to not be compliant with the current nomenclature, the Ashtamudi short-neck clam began to be referred to as Protapes gallus.
Marcia recens from Ashtamudi lake, India.
However, the latest in-depth taxonomic study points to the clam having been misidentified from the very beginning. According to the finding of the team of A. Arathi, R. Ravinesh and A. Biju Kumar of the Department of Aquatic Biology and Fisheries, University of Kerala, and Graham Oliver of National Museum Wales, United Kingdom, the Ashtamudi short-neck clam belongs to a totally different genus, while its rightful scientific name actually is Marcia recens. Their paper was published in the open access journal ZooKeys.
During their research, the scientists identified another edible species from Ashtamudi Lake that belongs to the Marcia genus: Marcia opima. While it could easily be mistaken for its commercially important relative thanks to a multitude of colour variations, it does not appear to contribute significantly to the export. Meanwhile, the actual species identified as Paphia malabarica (Protapes gallus) can be found in shallow coastal waters in the south of the country, but not in the studied brackishwater lake.
“No deleterious effects on the viability of the fishery have resulted from this error in identification, but from a legislative perspective applying the incorrect name to the exploited species could undermine its certification and protection,” comment the researchers.
“On the basis of this study, the species involved in the Marine Stewardship Council certification would be better considered at the generic level of Marcia or at the species level for Marcia recens, the most dominant species in the Ashtamudi Lake clam fishery zone.”
In conclusion, the authors of the study say that, “misidentification can undermine comparative biological studies and conservation, while more molecular studies are required to resolve the taxonomy of all clams involved in fishery.”
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Original source:
Arathi AR, Oliver PG, Ravinesh R, Kumar AB (2018) The Ashtamudi Lake short-neck clam: re-assigned to the genus Marcia H. Adams & A. Adams, 1857 (Bivalvia, Veneridae). ZooKeys 799: 1-20. https://doi.org/10.3897/zookeys.799.25829
