biodiversity

Bridging citizen science and expert surveys in urban biodiversity monitoring: Insights from insect diversity in Macao

Using insects as a model group, researchers examined the potential of citizen science to uncover undocumented biodiversity.

Guest blog post by Kaiyun Zheng, Mark K. L. Wong, Toby P. N. Tsang, Chi Man Leong

A photo of a cicada emerging from its shell, clinging to a branch among green leaves at night. — Eclosion of *Cryptotympana* sp. during a nighttime bioblitz activity in Macao. Photo courtesy Dr. Danny Chi Man Leong

During a field trip for an ecology course in a city park, lead author Ms Kaiyun Zheng was fascinated by the incredible insect biodiversity surrounding her. Insects serve as important bioindicators—their diversity and assemblage can reveal ecological processes and environmental health. However, sampling insect diversity is often challenging, requiring extensive equipment and field effort. Despite being one of the most species-rich animal groups, insects are undergoing a global decline due to habitat loss, pollution, and urbanization. Traditional insect surveys typically demand significant time and resources and are limited in scope.

Curious to find a more accessible approach, Kaiyun began exploring insect records from both expert-led field surveys and citizen science platforms such as iNaturalist. Together with her supervisor, Dr. Danny Chi Man Leong from Beijing Normal-Hong Kong Baptist University, and co-authors Dr. Mark Wong from The University of Western Australia and Dr. Toby Tsang from University of Toronto Scarborough, they posed a key question: Can citizen science reveal hidden biodiversity beyond what expert surveys have recorded?

A photo of a woman standing outdoors, wearing a white shirt and brown skirt, holding a phone and a hat, with a backpack slung over one shoulder. — Ms. Kaiyun Zheng

A photo of a man with arms crossed, wearing a dark green sweater over a collared shirt, and a watch, standing against a wooden background. — Ms. Kaiyun Zheng

Citizen science involves participation by people without formal scientific training, who contribute to scientific research by collecting and sharing data. In biodiversity documentation, citizen scientists can use smartphones and digital platforms to record species, helping expand scientific knowledge at scale.

Using insects as a model group, the authors examined the potential of citizen science to uncover undocumented biodiversity and discussed how large-scale citizen-contributed data could enhance ecosystem monitoring. To evaluate the strengths and complementarities of different data sources, they compared an expert dataset with a citizen science dataset.

Four panels depicting insect observation data: a map, trend graphs for observations, observers, and species over time. — Spatial distribution of insect observations in Macao from the citizen science dataset (iNaturalist.org) (A), along with cumulative increases in verified identifiers (B), insect observations (C), and recorded insect species (D).

In total, 1,889 insect species were recorded across both datasets, but only 462 species (24%) overlapped. The expert dataset included 1,339 species, of which 877 (65%) were not found in the citizen science records. Conversely, the citizen science dataset documented 1,012 species, with 550 (54%) unique to it. This substantial non-overlap indicates that the two approaches capture different facets of insect diversity. For example, there was relatively high overlap for insect groups such as butterflies and moths (Lepidoptera), likely due to their conspicuous appearance and popularity among observers. In contrast, groups such as wasps, bees and ants (Hymenoptera) and flies (Diptera) were underrepresented in the citizen science dataset, suggesting challenges in detecting smaller or more cryptic species.

Venn diagram showing species counts: 877 expert recorded, 550 citizen science recorded, and 462 shared species. — Venn diagram of insect diversity between expert and citizen science datasets.

These findings highlight the importance of integrating expert surveys with citizen science efforts to achieve a more comprehensive understanding of insect biodiversity, especially in urban areas which benefit from a high participation from citizen scientists.

Their study also highlights the unique strengths of citizen science for urban biodiversity monitoring. Residents living near parks and green spaces are ideally placed to document insect occurrences in real time across a wide range of locations. Notably, the study includes a citizen-contributed record of Mortonagrion hirosei, a Near Threatened damselfly rarely observed in Macao. This example illustrates how citizen science can detect rare or cryptic species, uncovering important biodiversity records and filling gaps left by traditional surveys, making it an indispensable tool for future biodiversity monitoring.

Research article:

Zheng K, Wong MKL, Tsang TPN, Leong CM (2025) Bridging Citizen Science and Expert Surveys in urban biodiversity monitoring: Insights from insect diversity in Macao. Biodiversity Data Journal 13: e153402. https://doi.org/10.3897/BDJ.13.e153402

Tackling extinction risks in the EU with invasive species management

A new study identifies where and how targeted action can have the highest conservation impact.

Experts from the International Union for Conservation of Nature (IUCN) have analysed how targeted management of invasive alien species (IAS) can reduce extinction risks for threatened species across the European Union (EU), in line with the EU Biodiversity Strategy for 2030.

Published in the open-access journal NeoBiota, and funded by the European Commission, a new study identifies where and how targeted action against IAS can have the highest conservation impact.

Researchers applied the IUCN Species Threat Abatement and Restoration (STAR) metric to measure opportunities for species threat abatement caused by IAS. They estimated that fully removing threats from IAS could reduce extinction risk for EU species by up to 16%.

Methodological outline for the different steps of the STAR-t analyses on Invasive Alien Species threats.

The Macaronesian Islands, namely the Canary Islands (Spain), Madeira (Portugal), and the Azores (Portugal), present the largest opportunities for reducing species extinction risk. The research calculates this at an over 40% reduction in extinction risk if IAS were eliminated, illustrating how IAS pose a significantly higher threat to islands compared to mainland ecosystems. Islands are particularly vulnerable due to their unique biodiversity, high levels of endemism, and often fragile ecosystems.

“Given the alarming impact that invasive alien species have on native biodiversity and the economy, it is essential to identify where action can have the greatest effect. In this context, our work presents the first regional application of the Species Threat Abatement and Restoration (STAR) metric, a science-based method that links conservation actions to the reduction of species extinction risk. By applying STAR with data from the EU Red List of threatened species, we highlight opportunities for addressing invasive alien species across national and subnational levels in the EU.
Randall Jiménez Q., Senior Conservation Scientist, IUCN (first author of the research).

For specific IAS, the greatest opportunities to reduce regional species extinction risk by mitigating threats from IAS come from managing feral goats (12.4%), mouflons (8.1%), rabbits (5.3%) and rats (4.6%).

Contribution of IAS threat abatement to extinction risk reduction. Relative contribution (in percentage) to the species extinction risk reduction that could be met by acting to abate IAS threats in each of the EU Member States or Outermost Regions.

Invasive alien species are a major threat to global biodiversity and the total cost of biological invasions across all European Union member states has been estimated at 129.9 billion US dollars between 1960 and 2020. In Europe, measures for IAS management are mainly established through the European Union Biodiversity Strategy 2030, which aims to halve the number of IUCN Red List of Threatened Species at risk from IAS by 2030.

“Mitigating the impacts of invasive alien species offers some of the greatest potential gains for conserving native biodiversity, while also delivering benefits for ecosystem services and local economies.

“This analysis provides decision-makers with guidance on where efforts can achieve the most significant results, supporting progress toward the EU Biodiversity Strategy target of reducing impacts on threatened species from invasive alien species by 50%.”
Boris Erg, IUCN European Regional Director.

Across the EU, 3,759 species (excluding marine animals) have been assessed as Near Threatened or Threatened with extinction, of which 579 (15%) are documented to be threatened by IAS (IUCN 2024).

A 2023 report from the Intergovernmental Panel on Biodiversity and Ecosystem Services (IPBES) found that IAS have been a significant driver in 60% of documented plant and animal extinctions. The report, informed by experts from the IUCN Species Survival Commission (SSC) Invasive Species Specialist Group (ISSG), identified 3,500 invasive species that are severely harming biodiversity and human livelihood. These are increasing rapidly, with a forecast increase of 36% by 2050 – posing threats to the realisation of the Global Biodiversity Framework.

Original source:

Jiménez RR, Smith KG, Brooks TM, Scalera R, Mair L, Nunes AL, Costello KE, Macfarlane NBW (2025) Guiding action on invasive alien species towards meeting the EU’s Biodiversity Strategy for 2030. NeoBiota 99: 109–129. https://doi.org/10.3897/neobiota.99.148323

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Celebrating One Year on Weibo

One year ago, Pensoft embarked on an exciting new journey to connect with the vibrant scientific community in China by launching our official Weibo account. This initiative was designed to foster closer ties with Chinese researchers, academics, and science enthusiasts—helping to broaden the reach of scientific knowledge and promote international collaboration.

Highlights from Our First Year

Over the past 12 months, we’ve shared a wide range of articles, research highlights, and updates from our diverse portfolio of open-access journals. Here are some of the most memorable moments from our first year:

Our most viewed video featured the discovery of three new species of Nautilus—the iconic deep-sea mollusks. Published in ZooKeys, the study described species from the Coral Sea and South Pacific. The video captivated marine biology fans and drew thousands of views. Videos are a powerful way to share science, and we encourage researchers to include video materials whenever possible!

Video by Gregory J. et al.

Another example was the video from the study Kleptoparasitism in Micrurus mipartitus competing for the same Caecilia sp. in western Colombia, published in Herpetozoa. The footage documented a rare and dramatic interaction between coral snakes fighting over a caecilian, and it fascinated our followers with its unusual ecological behavior.

Video by Henrik Bringsøe, Niels Poul Dreyer

Our most viral post introduced the newly described supergiant Bathynomus vaderi—a massive deep-sea isopod discovered off the coast of Vietnam. Its name, vaderi, was inspired by the creature’s head, which bears a striking resemblance to the iconic helmet worn by Darth Vader in Star Wars.

The Dark Side of the ocean: New giant sea bug species named after Darth Vader

Another popular post highlighted new mimetid spider species (Araneae, Mimetidae) discovered in Guizhou Province, published in Zoosystematics and Evolution. The study shed light on the region’s rich spider biodiversity and sparked strong engagement from our Chinese followers. It seems that spiders are a consistent fan favorite, with arachnid discoveries regularly going viral on our Weibo!

**Male holotype of *Mimetus* *lanmeiae* sp. nov., photograph by Q Lu (Shenzhen)**

This trend continued with our most popular longread, which told the story of Otacilia khezu sp. nov., a newly discovered cave-dwelling spider from Guangxi, China, published in the Biodiversity Data Journal. What truly captured readers’ imaginations—beyond the biological discovery—was the name itself. The spider was named after the Khezu, a wyvern from the popular video game Monster Hunter, known for its blindness and eerie appearance. Just like its namesake, Otacilia khezu completely lacks eyes — a striking adaptation to life in the dark.

Monster Hunter in real life: eyeless spider named after video game monstrosity

We’re also thrilled to see research from Pensoft’s journals featured widely across Chinese media. Articles have appeared in blogs, popular outlets such as People’s Daily, Xinhua, Global Times, Science and Technology Daily, on CCTV, in local news, and even in print newspapers!

Looking Ahead

As we celebrate this milestone, we’re filled with excitement for what lies ahead. We look forward to continuing to share cutting-edge science, uncovering new discoveries, and building stronger connections with our Chinese readers and partners.

Thank you to everyone who has followed, shared, and supported us over the past year. Your engagement has made this journey meaningful and rewarding.

Stay connected with us on Weibo: Pensoft’s Official Weibo Account

FERRO project celebrates one year of advancing lake restoration across Europe

With a mission to address nutrient pollution and drive sustainable lake restoration across Europe, the FERRO project marks its first year.

Launched in June 2024, the Horizon Europe-funded project: Fostering European Lakes Restoration by Nutrient Removal, Recovery and Reuse: Integrated Catchment and In-lake Scale Approach (FERRO) – brings together scientists, engineers, and environmental experts from across Europe to develop innovative, nature-based, and circular solutions to reduce nutrient pollution in freshwater ecosystems.

Eutrophication, caused by excessive nutrients, such as phosphorus and nitrogen that enter lakes and reservoirs, remains one of the most pervasive threats to freshwater bodies. These excess nutrients often originate from agricultural runoff and wastewater discharges, resulting in algal blooms, oxygen depletion, and biodiversity loss.

FERRO addresses these challenges by working at both catchment scale and in-lake level, aiming not only to remove harmful nutrients, but also to recover and reuse them – aligning with Europe’s goals for circular economy and sustainable water management.

With a strong emphasis on interdisciplinary collaboration, FERRO combines natural science, engineering, economics, and policy to develop scalable restoration strategies adaptable across Europe’s diverse lake regions.

The FERRO consortium

FERRO unites seven partners from six European countries, each contributing unique expertise to the project’s holistic approach:

Biology Centre CAS, Czech Republic
Brockmann Geomatics, Sweden
Brockmann Consult, Germany
Helmholtz Centre for Environmental Research (UFZ), Germany
University of Southern Denmark (SDU), Denmark
Pensoft Publishers, Bulgaria
University of Helsinki (UH), Finland

Together, these organisations form a powerhouse of knowledge, experience, and innovation in the fields of limnology, hydrology, environmental policy, circular resource use and communications.

Pensoft’s role in FERRO

As the leader of the Communication and Dissemination Work Package #2, Pensoft plays a key role in ensuring that FERRO’s results and insights reach the widest possible audience. The responsibilities include the development and maintenance of the project’s visual identity and digital presence, managing media relations, producing public outreach materials, and facilitating knowledge exchange between scientific, policy, and stakeholder communities. Pensoft also supports the strategic dissemination of scientific outputs and policy-relevant findings, ensuring alignment with the project’s broader impact goals.

FERRO marked its first anniversary with a successful General Assembly meeting held in Leipzig, Germany, between 20^th and 22^nd May. Over the three-day meeting, the project partners gathered to reflect on the progress achieved during the first year, align their visions for the project’s future, and collaboratively plan the next phases of implementation

As the project entered its second year, the Leipzig meeting served as a moment to evaluate initial findings, refine methodologies, and strengthen engagement with stakeholders at local, regional, and EU levels. The outcomes will guide the FERRO consortium in its continued efforts to advance lake restoration across Europe.

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Stay tuned for more updates as the FERRO project continues to develop and implement its solutions for healthier lakes and more sustainable nutrient management across Europe!

You can keep tabs on the project’s official website: ferroproject.eu and also follow FERRO on LinkedIn, X and YouTube.

A prolific discovery: three new orchid species from Costa Rica and Panama

The new species utilise an unusual method of asexual reproduction known as prolification.

Researchers have discovered three new Pleurothallis orchid species in the cloud forests of Costa Rica and Panama. The new species utilise an unusual method of asexual reproduction known as prolification.

*Pleurothallis* *winkeliana*. Credit: Karremans et al.

Found in the cool, misty highlands of the Talamanca range at elevations between 1400 and 2550 metres, the newly discovered species, Pleurothallis matrisilvae, Pleurothallis pridgeoniana and Pleurothallis winkeliana are described in the open-access journal PhytoKeys.

Prolific stems in species across Pleurothallidinae. Credit: Karremans et al.

Prolificating plants produce miniature plantlets directly from their flowering stems, allowing them to bypass seed production.

Whilst prolification is rarely a fixed feature within this group of orchids, it becomes common under stressful environmental conditions. The ability may be advantageous in the challenging conditions of cloud forests, but remains underexplored scientifically. Methods of asexual reproduction might also be important when pollinators are scarce.

*Pleurothallis* *matrisilvae*. Credit: Karremans et al.

The new species have each adapted to exhibit prolification in different ways, such as forming long chains or bushy growths. These adaptations helped researchers identify them as distinct species, despite their initial visual similarities with other plants.

With close to 1700 species currently recorded, a third of which not known from anywhere else in the world, Costa Rica is a well-known orchid biodiversity hotspot. The discovery of these orchids displays the Talamanca range’s significance as a rich and largely unexplored area.

*Pleurothallis* *pridgeoniana*. Credit: Karremans et al.

With these additions, Costa Rica now boasts 67 recognised species of Pleurothallis, though researchers believe many more await formal identification. Such abundance highlights the importance of conserving these unique ecosystems.

Thanks to Costa Rica’s robust system of protected areas (SINAC), local institutions such as Lankester Botanical Garden of the University of Costa Rica are able to uncover and describe floristic novelties in an effort to study and conserve the country’s unique biodiversity.

Original source

Karremans AP, Pupulin F, Gange J, Bogarín D (2025) Three new species of Pleurothallis (Orchidaceae) from Costa Rica and Panama, with a note on asexual reproduction by prolification in Pleurothallidinae. PhytoKeys 256: 197-220. https://doi.org/10.3897/phytokeys.256.140316

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New copepod species highlights fragile biodiversity in Bermuda’s caves

It is the only member of the Tetragoniceps genus living in caves and could represent an ancient, early-diverging member of its evolutionary lineage.

Bermuda’s Walsingham cave system harbors a wide diversity of cave-dwelling animals not found anywhere else in the world; now, one more joins their ranks as researchers of the University of Cambridge, the Bermuda Institute of Ocean Sciences and Senckenberg am Meer German Centre for Marine Biodiversity Research have discovered a new copepod species.

Three close-up views of a translucent shrimp-like creature, showcasing its segmented body and delicate antennae against a dark background. — Confocal laser scanning microscopy images of *Tetragoniceps bermudensis*.

Copepods are some of the most diverse of all crustaceans, found everywhere from freshwater ponds to the open ocean. These tiny organisms are some of the most abundant animals in the marine plankton, and an essential component of food webs worldwide. However, their huge diversity remains rather poorly known, particularly in challenging environments like subterranean caves.

New species of Brazilian copepod suggests ancient species diversification and distribution

The new Bermudian copepod, Tetragoniceps bermudensis, was first collected in 2016 by Sahar Khodami, Pedro Martinez Arbizu, and Leocadio Blanco-Bercial from the Bermuda Institute of Ocean Sciences and the Senckenberg am Meer German Centre for Marine Biodiversity Research, who ventured into Roadside Cave through a narrow passageway in Bermuda’s ancient limestone bedrock. However, it was only when researchers analysed it in detail, in 2024, that T. bermudensis was confirmed to be an entirely new species. Like other members of Bermuda’s cave fauna, Tetragoniceps bermudensis – named after the country where it was discovered – might represent an ancient, early-diverging member of its evolutionary lineage, the research team say. Together with other ancient crustaceans inhabiting the island’s caverns, it persisted in a secluded, delicate underground ecosystem relatively free from competitors and predators.

“The new species of copepod crustacean, Tetragoniceps bermudensis, is the first of its genus from Bermuda, as well as the first known cave-dwelling species of the genus anywhere in the world and only the second within its family, Tetragonicipitidae,” says lead author Giovanni Mussini of the University of Cambridge’s Department of Earth Sciences. “This finding from Roadside Cave adds to the great diversity of endemic crustaceans (and other cave fauna) found in the island’s network of limestone caves.”

The team during the sampling expedition to Roadside Cave in 2016.

The team only found one female egg-bearing individual at Roadside Cave, a small cavern in Bermuda. It is hard to estimate just how rare the new species is based on a single specimen, but the finding “suggests a correspondingly limited area and a probable endemic status, consistent with the high degree of endemism typical of Bermuda’s cave-dwelling fauna,” the researchers write in their paper in the journal ZooKeys.

A photo of a dimly lit cave interior with water dripping from stalactites. — Views of Roadside cave.

Roadside Cave, where the new species was found, may face threats from “urban development, vandalism, dumping, littering and pollution, and sediment disturbance due to unlawful access by humans and domesticated animals,” which makes protecting this small creature all the more urgent. The researchers call for formal protection of the cave and for robust enforcement of existing measures to protect its precious fauna.

“The discovery of this species highlights that there remains a cryptic diversity of cave-dwelling species still to be discovered even in a densely populated island like Bermuda, whose hidden, underground biodiversity is all too often overlooked,” Mussini says in conclusion.

Research article:

Mussini G, Niimi YJ, Khodami S, Kihara TC, Martinez Arbizu P, Blanco-Bercial L (2025) A new species of Tetragoniceps Brady, 1880 (Copepoda, Harpacticoida, Tetragonicipitidae) from an anchialine cave in Bermuda, with an updated key to the species of the genus. ZooKeys 1239: 1-19. https://doi.org/10.3897/zookeys.1239.144436

Biodiversity Knowledge Hub makes an appearance at the European Geosciences Union General Assembly 2025

The Biodiversity Knowledge Hub fosters interoperability between diverse resources to make it easier to use and combine information.

*Gabriel Peoluze (LifeWatch ERIC) presents the Biodiversity Knowledge Hub poster at EGU 2025*
*(Vienna, Austria).*

On Monday, 28 April, the first day of the European Geosciences Union General Assembly 2025 (EGU 2025), participants had the chance to discover one of the most promising initiatives in biodiversity informatics: the Biodiversity Knowledge Hub (BKH). BKH was presented as part of a dedicated poster session, titled “Biodiversity Knowledge Hub: Addressing the impacts of environmental change by linking Research Infrastructures, Global Aggregators and Community Networks“.

Understanding and addressing the impacts of environmental change on biodiversity and ecosystems demands access to reliable FAIR data (as in Findable, Accessible, Interoperable, Reusable). However, the current landscape is often fragmented, making it difficult to combine and use these resources effectively.

Enter the Horizon-funded project Biodiversity Community Integrated Knowledge Library (BiCIKL): a pioneering initiative that demonstrates the transformative power of interdisciplinary collaboration. Coordinated by Pensoft, BiCIKL ran between 2021 and 2024.

New BiCIKL project to build a freeway between pieces of biodiversity knowledge

The Vision of BiCIKL

Within BiCIKL, 14 European institutions from ten countries teamed up with the aim to integrate biodiversity data across research infrastructures, scientific repositories, and expert communities.

Through this integration, BiCIKL bridged the gap between isolated knowledge systems and delivered actionable insights to guide conservation and resilience efforts. The project embodies the principles of open science by demonstrating how interdisciplinary collaboration can turn fragmented data into cohesive, usable knowledge for researchers, policymakers, and practitioners.

How to ensure biodiversity data are FAIR, linked, open and future-proof?

The Biodiversity Knowledge Hub

At the heart of BiCIKL’s success is the Biodiversity Knowledge Hub (BKH): an innovative platform that provides seamless access to biodiversity data, tools, and workflows. The BKH fosters interoperability between diverse resources, thus making it easier to combine information from different sources. Whether for advanced research analytics or policymaking in support of sustainable development, the BKH empowers users with tools tailored to their needs.

A few of the standout features of the BKH include:

Modular design to allow continuous expansion and adaptability to new challenges in biodiversity and climate resilience
Interoperable systems that connect a variety of databases, repositories, and services to deliver integrated knowledge.
Community building by welcoming a broad network of stakeholders to ensure the platform’s long-term sustainability and growth.

Watch the Biodiversity Knowledge Hub video on YouTube.

Setting a New Benchmark in Biodiversity Informatics

Through its collaborative approach, BiCIKL set a new standard for how biodiversity and climate resilience initiatives can be harmonised globally. By showcasing best practices in data integration, capacity building, and stakeholder engagement, BiCIKL became much more than a project: it turned into a blueprint for future biodiversity knowledge infrastructures.

The Biodiversity Knowledge Hub serves to demonstrate how harmonised standards and active collaboration are key to unlocking the full potential of biodiversity data. In doing so, its mission is to create scalable, long-term solutions that are crucial for addressing today’s pressing environmental challenges.

The poster presentation at EGU25 outlined the methodologies and technologies driving the BKH, emphasizing its role as a pioneering model for integrated biodiversity knowledge and action. As environmental pressures continue to mount, the work of BiCIKL and the Biodiversity Knowledge Hub offers a hopeful path forward—one where knowledge flows freely, collaborations flourish, and data-driven solutions guide our way to a more resilient future.

Visit the Biodiversity Community Integrated Knowledge Library (BiCIKL) project’s website at: https://bicikl-project.eu/.

Don’t forget to also explore the Biodiversity Knowledge Hub (BKH) for yourself at: https://biodiversityknowledgehub.eu/ and watch the BKH’s introduction video.

Revisit highlights from the BiCIKL project on X/Twitter from the project’s hashtag: #BiCIKL_H2020 and handle: @BiCIKL_H2020.

BiCIKL project sums up outcomes and future prospects at a Final GA in Cambridge

Hades, god of the dead, and now a deep-sea isopod

Researchers named five newly discovered isopod species after figures from Greek mythology.

Introducing Haploniscus hades, isopod of the underworld.

The deep sea is the largest yet least explored biome in the world, with estimates suggesting that up to 91% of marine species are yet to be discovered.

Indeed, when it comes to finding new species in the deep sea, things are more than a little tricky. Besides the obvious difficulties associated with scouring such vast, inaccessible depths, researchers also face the obstacle of so-called ‘cryptic’ species: groups of closely related taxa that are almost impossible to tell apart from looks alone.

The recently discovered Haploniscus belyaevi isopod species complex is one such group, collected from the the abysso-hadal Kuril-Kamchatka Trench (KKT) region in the Northwest Pacific Ocean.

Distribution of haploniscid species of the *belyaevi*-complex in the greater Kuril-Kamchatka Trench and Sea of Okhotsk area of the Northwest Pacific. Stars indicate each species type locality.

Isopods collected from the region were initially believed to represent a single species, but are now known to represent at least six distinct species, five of which are new to science. Published in the journal Zoosystematics and Evolution, a new study combines classical morphology with DNA barcoding, confocal laser scanning microscopy, and the first-ever genomic sequencing of Haploniscidae isopods to distinguish these cryptic species.

In the research paper, lead author Dr Henry Knauber and his colleagues from the Senckenberg Research Institute and Goethe University Frankfurt provide detailed descriptions of each species and reveal the names of the new species, inspired by Greek mythology.

Meet the new isopods

Three isopod species. — Left to right: H. *hades*, H. *belyaevi*, and H. *erebus*.

Haploniscus hades

Who else could rule the hadal zone but Hades himself? This isopod’s pleotelson (tail segment) hides its uropods (tail appendages), which, to the endlessly creative research team, evoked the cap of invisibility used by Hades.

Haploniscus apaticus

Named after Apate, the goddess of deceit, this ‘deceptive’ isopod hides in plain sight thanks to its unassuming looks, which kept it hidden amongst its sibling species until recently.

Haploniscus erebus

Bearing the name of Erebus, the primordial god of darkness, this species lurks in the shadowy depths.

Haploniscus kerberos

Named after Kerberos (Cerberus), the multi-headed guardian of the underworld’s gates, this species is currently only known from the abyssal plains, watching over the borderlands between deep and deeper.

Haploniscus nyx

Nyx, the goddess of night, lends her name to this elusive species.

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The isopod specimens were collected during deep-sea research expeditions between 2012 and 2016, covering depths of up to 8,000 meters.

While the names of these species represent little more than creative fun, the study’s findings help illuminate evolutionary processes across natural barriers such as the Kuril-Kamchatka Trench and underscore the potential for new discoveries in Earth’s least explored environments.

Who knows, perhaps Haploniscus hades has two brothers, H. zeus and H. Poseidon, hiding above, still waiting to be found.

Original source

Knauber H, Schell T, Brandt A, Riehl T (2025) Across trench and ridge: description of five new species of the Haploniscus belyaevi Birstein, 1963 species complex (Isopoda, Haploniscidae) from the Kuril-Kamchatka Trench region. Zoosystematics and Evolution 101(2): 813-853. https://doi.org/10.3897/zse.101.137663

Cover image credit: Isopods: Knauber et al.; Illustration: macrovector/Freepik.

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Pensoft joins the Biodiversity Meets Data Horizon project to support biodiversity monitoring and conservation

As part of the new consortium, Pensoft is to use innovative communication tools in support of evidence-based biodiversity conservation across Europe.

The European Union (EU) has been working to protect nature for decades, with the Natura 2000 network now safeguarding over 18% of EU land and 9% of its marine territory. Yet, biodiversity is still in trouble, with only 50% of bird species and 15% of habitats in good conservation status.

To turn the tide, the EU’s Biodiversity Strategy for 2030 will expand the existing Natura 2000 areas, implement the EU’s first-ever Nature Restoration Law, and introduce concrete measures to achieve global biodiversity targets. Success will depend on enhancing biodiversity monitoring, making better use of data and gaining a clearer picture of how nature is changing.

Addressing this urgent challenge, the EU Horizon project BMD (abbreviated for Biodiversity Meets Data) will offer a centralised platform (Single Access Point or SAP) for improved biodiversity monitoring across Europe.

Pensoft’s role

Pensoft will play a role in Biodiversity Meets Data’s impact by planning and implementing the communication, dissemination and exploitation of project results, as well as helping with the training and capacity building for BMD’s end-users, which will be led by LifeWatch ERIC. Pensoft will adopt a multi-format approach to knowledge transfer with tailored outputs for the scientific community, decision-makers, industry representatives and the general public.

Furthermore, the BMD SAP will also incorporate elements of the Biodiversity Knowledge Hub (BKH), developed under the BiCIKL project, coordinated by Pensoft.

“It’s incredibly rewarding to see the continuity in our projects, with the legacy of the BiCIKL project continuing with Biodiversity Meets Data. This seamless progression not only builds on our past successes but also ensures that our work continues to deliver long-lasting value to the biodiversity community.”
said Prof. Dr. Lyubomir Penev, CEO and Founder of Pensoft, and project coordinator of BiCIKL (abbreviated from Biodiversity Community Integrated Knowledge Library).

The BMD project consortium at the project’s kick-off meeting in early March 2025 (Leiden, the Netherlands).

International consortium

Coordinated by Naturalis Biodiversity Center, the project brings together 14 partner organisations from 11 countries to develop innovative solutions for biodiversity management.

Naturalis Biodiversity Center – the Netherlands
Royal Botanic Garden Edinburgh – the United Kingdom
Meise Botanic Garden – Belgium
Helmholtz Centre for Environmental Research – Germany
e-Science European Infrastructure for Biodiversity and Ecosystem Research – Spain
Pensoft Publishers – Bulgaria
The European Land Conservation Network – the Netherlands
University of Tartu – Estonia
Stichting Catalogue of Life – the Netherlands
The International Hellenic University – Greece
The Senckenberg Nature Research Society – Germany
The Environment Agency Austria – Austria
The National Research Council – Italy
SIB Swiss Institute of Bioinformatics – Switzerland

For more information:

Visit the BMD project website at https://bmd-project.eu/, and make sure to follow the project’s progress via our social media channels on Bluesky and Linkedin.

Spider-eating spiders: new ‘pirate’ species discovered in China

Also known as cannibal spiders, two new species have been discovered in Guizhou Province.

China’s Guizhou Province has long been known for its remarkable biodiversity, but a recent study in Zoosystematics and Evolution has shed light on some of its creepier, lesser-known inhabitants: pirate spiders.

What is a pirate spider?

The name ‘pirate spiders’ refers to species belonging to the family Mimetidae. Also known (misleadingly) as cannibal spiders, they earned their name because of their araneophagic (spider-eating) nature.

Araneophagic behaviours.
Araneophagic behaviours.
Araneophagic behaviours.

These eight-legged predators don’t spin webs to catch prey; instead, they infiltrate the webs of other spiders and mimic the vibrations of prey or potential mates, then ambush the unsuspecting hosts when they come to investigate.

A recent research paper by Zhang et al. offers the most comprehensive survey to date of the pirate spider genus Mimetus in Central Guizhou, including two new species, bringing the provincial total to eight and giving Guizhou the highest Mimetus diversity in China.

Two Mimetus sinicus spider individuals on leaves. — *Mimetus* *sinicus*.

China’s new species

Mimetus guiyang

Discovered in Guiyang City, this species is known only from females collected via pitfall traps. Its most distinctive feature is the presence of large bubble-shaped ossified hair bases on the abdomen, a rarity among known Mimetus species. Its genital morphology and body patterns make it easily distinguishable from close relatives.

Mimetus lanmeiae

Also found in Guiyang, this species was observed perched on a spider web, likely in the act of mimicry. Its unique palpal structures and small body size (~2.14 mm) distinguish it from other known Mimetus species. The name of the species honours the mother of the specimen collector. Hopefully this was meant as a compliment.

Other findings

New records: The researchers recorded two previously known species (M. caudatus and M. sinicus) for the first time in Guizhou, expanding their known range.
Rediscovery and redescription: M. caudatus, previously known only from male specimens, now has its female described in detail.
Molecular insights: DNA barcoding (COI gene sequencing) was used to support species identification and match males and females – a critical step for accurate taxonomy, especially given the subtle differences between males and females in Mimetus.

Original source

Zhang J, Zhang H, Liu J, Yu H, Xu X (2025) A survey of mimetid spiders (Araneae, Mimetidae) from Central Guizhou Province, China. Zoosystematics and Evolution 101(2): 711-734. https://doi.org/10.3897/zse.101.146895

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