In the belly of the Devil: New rare ant species found in the stomach of a poison frog

While new ant species are usually discovered in surveys involving researchers searching through leaf litter, it turns out that sifting through the stomach contents of insect-eating frogs might prove no less effective, especially when it comes to rare species. Such is the case of a new species of rarely collected long-toothed ant, discovered in the belly of a Little Devil poison frog in Ecuador.

The international team of Drs Christian Rabeling and Jeffrey Sosa-Calvo, both affiliated with University of Rochester, USA, Lauren A. O’Connell, Harvard University, USA, Luis A. Coloma, Fundación Otonga and Universidad Regional Amazónica Ikiam, Ecuador, and Fernando Fernández, Universidad Nacional de Colombia, have their study published in the open access journal ZooKeys.

The new ant species, named Lenomyrmex hoelldobleri after renowned myrmecologist Bert Hölldobler on the occasion of his 80th birthday, was described based on a single individual – a female worker, recovered from a Little Devil poison frog. It is the seventh known species in this rarely collected Neotropical genus.  

Similarly to its relatives within the group, this ant amazes with its slender and elongate mouthpart, yet it is larger than all of them. The remarkable jaws speak of specialised predatory habits, however, so far, nothing is known about these ants’ feeding behavior.in-full-face

The amphibian, whose diet majorly consists of ants, was collected from the Ecuadorian region Choco, which, unfortunately, despite being one of the most biologically diverse areas in the world with exceptionally high levels of endemism, is also one of Earth’s most threatened areas.

In conclusion, the authors point out that “studying vertebrate stomach contents is not only a way of studying the trophic ecology” (meaning the feeding relationships between organisms), “but also an interesting source of cryptic and new arthropod species, including ants.”

Furthermore, the scientists note that nowadays there is no need to kill a frog, in order to study its stomach. “Stomach flushing methods have been developed and successfully applied in numerous studies, which avoids killing individuals.”

 

Original source:

Rabeling C, Sosa-Calvo J, O’Connell LA, Coloma LA, Fernández F (2016) Lenomyrmex hoelldobleri: a new ant species discovered in the stomach of the dendrobatid poison frog, Oophaga sylvatica (Funkhouser). ZooKeys 618: 79-95. doi: 10.3897/zookeys.618.9692

Celebration time: ZooKeys releases its 600th issue


zookeys 600 coverWith what already sounds like an annual tradition at this time of the year, we are delighted to announce yet another milestone that
ZooKeys just reached. Our 600th issue is now out and we are just as proud with it as we were exactly five years and a month ago, when we printed out our first three-digit issue number on a ZooKeys cover.

However, we feel nowhere near getting tired of counting pages, covers and issues, nor do we believe this will ever going to happen. Quite the contrary, every year we take more and more pleasure in adding new achievements next to the name of ZooKeys and Pensoft.   

Last year was no exception. During the past 13 months, we published a total of 673 articles, including research findings spectacular enough to reach out to not only the zoological fellowship, but to the wide audience from around the world. While our Impact Factor keeps on increasing, according to the figures Thomson Reuters released last week, we are gratified to observe our progressively growing impact on both the scholarly and the popular-science front.

Thanks to the discoveries, which found a suiting publication partner in ZooKeys, our authors and us made a lot of big headlines in outlets such as National Geographic, Science, CNN, BBC, Sky News, New York Times, Deutsche Welle, Der Standard, DR, Washington Post, Fox News, Huffington Post, The Guardian, NBC News, and a lot more. We had a bit of everything: record-breakers, species given mystic or splashy names and others bearing nerdy ones. Together, we also gave public voice to serious conservation issues, calling for immediate action.

Last June, we introduced you to the Hades centipede, known to be the world’s deepest-dwelling species of its kind. Who knew that the entrance to the Underworld is located in a Croatian cave?

Later on, in November, published with us snail species Acmella nana broke the World record for the tiniest land snail. Moreover, this happened only about a month after we published the previous ‘prizewinner’ Angustopila dominikae, and that one was already tiny enough to fit 10 of its shells within the eye of a needle at the very same time!  

Our pages, which have been and always will be openly available to read for anyone who is online, were also the first to let you know about the existence of the Johnny Cash tarantula, the (Edward) Snowden crayfish, the two daddy longlegs: Smeagol and the ‘Master-of-the-crypt’ Behemoth, the Chewbacca beetle and the Brad Pitt wasp, among many others.

About two months ago, graduate student Madhu Chetri spotted the ancient Himalayan woolly wolf in Nepal. The new knowledge about the beautiful and, sadly, Critically Endangered carnivore, which he acquired, will hopefully help in preventing its otherwise imminent extinction.

In the meantime, Deutsche Welle (DW) featured our Zorro fish along with the eight-legged Johnny Cash’s namesake in their rank list of the 7 “newcomer” species of the year.

While being in the spotlight is definitely a gratifying feeling, we also indulge in our successes achieved far from the eyes of the public, although we are certain that our authors will be just as excited to hear about. Such an accomplishment is our recently sealed partnership with open digital repository Zenodo, who are helping us, along with the rest of the journals, published by Pensoft, to keep our research findings safe and easily accessible by archiving all our articles in both PDF and XML format on the date of publication.

However, let’s not forget that nothing of all the above would be what it is without our authors, editors and reviewers, who have always done their best to keep ZooKeys at the World’s top open access academic journals. We’d especially like to thank our Most active authors, editors and reviewers for being substantial part of ZooKeys.

New curiously scaled beetle species from New Britain named after ‘Star Wars’ Chewbacca

Chewbacca, the fictional ‘Star Wars’ character, has given his name to a new species of flightless beetle, discovered in New Britain, Papua New Guinea. Although Trigonopterus chewbacca was only one of the four black new weevil beetles found during the expedition, it stood out with its curious scales, which made the authors think of Han Solo’s loyal companion.

Scientists Dr Matthew H. Van Dam, SNSB-Zoological State Collection, Germany, Raymond Laufa, The University of Papua New Guinea and Dr Alexander Riedel, Natural History Museum Karlsruhe have their paper, where they describe the new species, published in the open access journal ZooKeys.

Failing to understand how was it possible that the hyperdiverse beetle genus Trigonopterus has never been spotted in New Britain, two of the researchers travelled to the island to double-check the foliage and leaf litter. Interestingly, the genus thrives best in Melanesia, the Oceania subregion, where Papua New Guinea is located, yet there had been only a single Trigonopterus species known from Bismarck Archipelago prior to the present study.

Eventually, having spent ten days sifting leaf litter and beating foliage, the authors discovered eighteen individuals in primary forests growing on limestone karst, and later assigned them to four separate species. However, these few findings are still striking, given the abundance of the beetles in similar localities in the New-Guinean mainland.

Unlike its sci-fi namesake, the Chewbacca beetle cannot rely on its measurements to scare other possibly malevolent species off. It only measures between 2.78 and 3.13 mm. Dissimilar again, is its body, which is black and rhomboid-shaped, while its legs and antenna appear rusty. What likens the beetle to “Chewie”, however, is its distinctively dense scales, covering its head and legs.

In conclusion, the authors note that the beetle genus must have colonised New Britain at least four times in the past. “Given the size, mountainous topography and tropical vegetation of New Britain, it is likely that Trigonopterus has undergone some local speciation on the island, but this possibility requires further investigation,” they say.

 

Original source:

 

Van Dam MH, Laufa R, Riedel A (2016) Four new species of Trigonopterus Fauvel from the island of New Britain (Coleoptera, Curculionidae). ZooKeys 582: 129-141. doi: 10.3897/zookeys.582.7709

First find of its kind in more than 3 decades: The adorable Olinguito

Observed in the wild, tucked away in museum collections, and even exhibited in zoos around the world; there is one mysterious creature that has been a victim of mistaken identity for more than 100 years.

Observed in the wild, tucked away in museum collections, and even exhibited in zoos around the world; there is one mysterious creature that has been a victim of mistaken identity for more than 100 years.

A team of Smithsonian scientists, however, uncovered overlooked museum specimens of this remarkable animal, which took them on a journey from museum cabinets in Chicago to cloud forests in South America to genetics labs in Washington, D.C. The result: the olinguito (Bassaricyon neblina); the first carnivore species to be discovered in the Western Hemisphere in 35 years.

The team’s discovery is published in the Aug. 15 issue of the open-access scholarly journal ZooKeys.

The olinguito (oh-lin-GHEE-toe) looks like a cross between a house cat and a teddy bear. It is actually the latest scientifically documented member of the family Procyonidae, which it shares with raccoons, coatis, kinkajous and olingos. The 2-pound olinguito, with its large eyes and woolly orange-brown fur, is native to the cloud forests of Colombia and Ecuador, as its scientific name, “neblina” (Spanish for “fog”), hints.

In addition to being the latest described member of its family, another distinction the olinguito holds is that it is the newest species in the order Carnivora; an incredibly rare discovery in the 21st century.

“The discovery of the olinguito shows us that the world is not yet completely explored, its most basic secrets not yet revealed. If new carnivores can still be found, what other surprises await us? So many of the world’s species are not yet known to science. Documenting them is the first step toward understanding the full richness and diversity of life on Earth,”

said Kristofer Helgen, curator of mammals at the Smithsonian’s National Museum of Natural History and leader of the team reporting the new discovery.

Discovering a new species of carnivore, however, does not happen overnight. This one took a decade, and was not the project’s original goal; completing the first comprehensive study of olingos, several species of tree-living carnivores in the genus Bassaricyon, was.

Helgen’s team wanted to understand how many olingo species should be recognized and how these species are distributed; issues that had long been unclear to scientists. Unexpectedly, the team’s close examination of more than 95 percent of the world’s olingo specimens in museums, along with DNA testing and the review of historic field data, revealed existence of the olinguito, a previously undescribed species.

The first clue came to Helgen from the olinguito’s teeth and skull, which were smaller and differently shaped than those of olingos. Examining museum skins revealed that this new species was also smaller overall with a longer and denser coat; field records showed that it occurred in a unique area of the northern Andes Mountains at 5,000 to 9,000 feet above sea level; elevations much higher than the known species of olingo. This information, however, was coming from overlooked olinguito specimens collected in the early 20th century. The question Helgen and his team wanted to answer next was: Does the olinguito still exist in the wild?

To answer that question, Helgen called on Roland Kays, director of the Biodiversity and Earth Observation Lab at the North Carolina Museum of Natural Sciences, to help organize a field expedition.

The team had a lucky break that started with a camcorder video. With confirmation of the olinguito’s existence via a few seconds of grainy video shot by their colleague Miguel Pinto, a zoologist in Ecuador, Helgen and Kays set off on a three-week expedition to find the animal themselves. Working with Pinto, they found olinguitos in a forest on the western slopes of the Andes, and spent their days documenting what they could about the animal&;its characteristics and its forest home. Because the olinguito was new to science, it was imperative for the scientists to record every aspect of the animal. They learned that the olinguito is mostly active at night, is mainly a fruit eater, rarely comes out of the trees and has one baby at a time.

In addition to body features and behavior, the team made special note of the olinguito’s cloud forest Andean habitat, which is under heavy pressure of human development. The team estimated that 42 percent of historic olinguito habitat has already been converted to agriculture or urban areas.

“The cloud forests of the Andes are a world unto themselves, filled with many species found nowhere else, many of them threatened or endangered. We hope that the olinguito can serve as an ambassador species for the cloud forests of Ecuador and Colombia, to bring the world’s attention to these critical habitats,”

Helgen said.

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Original Source:

Helgen KM, Pinto CM, Kays R, Helgen LE, Tsuchiya MTN, Quinn A, Wilson DE, Maldonado JE (2013) Taxonomic revision of the olingos (Bassaricyon), with description of a new species, the Olinguito. ZooKeys 324: 1. doi: 10.3897/zookeys.324.5827

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