insect taxonomy

Inspiring a new generation of taxonomists

New species of Australian miracine wasps described with school students as part of the Insect investigators citizen science project

Guest blog post by Mollie Slater-Baker

It is estimated that only around 20% of the world’s insects are formally described. A formal description is the foundational understanding of a species, including a scientific name, information on how to identify the species, its biology, and where it can be found. With such a large proportion of our insects lacking this foundational information, we are left viewing the insect world through a very small window. This has major implications for conservation of insects and the ecosystems in which they play integral roles. It also limits our understanding of our natural resources, with the study of insects being valuable in a variety of fields, from healthcare and biochemistry, to biological pest control, to insect-inspired engineering.

Unfortunately, with a worldwide lack of taxonomic experts, limited funding, and the immense scale of describing the world’s insects, documenting our insect diversity before it’s lost to extinction is a considerable challenge. But this is where community engagement and citizen science can shine.

Experts in insect taxonomy “threatened by extinction” reveals the first European Red List of Taxonomists

The Insect Investigators citizen science project, which ran in Australia in 2022, aimed to involve schools throughout the taxonomic process, to contribute to large-scale collection and documentation of Australian insects, while fostering an appreciation for insect diversity and the role of taxonomy. Fifty rural schools from Queensland, South Australia, and Western Australia participated by setting up Malaise traps (tent-like passive insect traps) to sample local invertebrates near their schools over four weeks. This project resulted in over 60 thousand insect specimens being collected from often under-sampled, more remote parts of Australia. The resulting specimens are preserved and deposited in Australian museums for future research, including taxonomic work.

Malaise traps set up at Kwoorabup Nature School (left) and Beerwah State High School (right) to sample insects as part of the Insect Investigators project.

Through this project, several schools were involved in collecting a rarely collected group of parasitoid wasps belonging to the subfamily Miracinae (aka miracine wasps). These tiny wasps (typically 1-2mm in length) are very difficult to collect using traditional methods, though they appear to be quite diverse in Australia. As parasitoids, miracine wasps require an invertebrate host to complete their lifecycle. For miracine wasps, this host is a leaf-mining caterpillar – the kind that eats small twisting tunnels on the inside of leaves. The wasps lay their eggs inside these caterpillars, and the wasp larvae hatch and eat the caterpillar from the inside out!

‘Insect soup’ – specimens collected via Malaise Trap at Kwoorabup Nature School.

Due to their caterpillar-eating biology, and the fact that they are picky eaters, usually targeting a specific species, these wasps can be used to control pests. For example, the miracine wasp species Mirax insularis in Puerto Rico, and Centistidea striata in Brazil, are known to attack coffee leaf-miners, a major pest of coffee plantations – so you may have one of these wasps to thank for your morning coffee!

As part of this project, we engaged with schools to involve them throughout the process of describing the miracine wasps they had collected. First, we ran in-person and online or hybrid workshops with the students to teach them about the new wasp they had discovered, and the taxonomic process involved in describing and naming it. The students then brainstormed a variety of creative names for the new species, which were collaboratively curated and voted upon to arrive at the final species names.

From Queensland, we have Mirax supremus, meaning ‘highest’ in Latin, named after the Pinnacle program at Beerwah State High School, which the students were a part of.

From South Australia, comes Ceduna Area School’s species, Mirax ceduna, named after the school and town the wasp was collected from (colloquially known as the ‘golden bum wasp’).

And from Kwoorabup Nature School in Western Australia (WA), Mirax kaatijan, meaning knowledge/learning in the Noongar language of the south-west region of WA, to represent the new knowledge the students had learnt about insect diversity, and the importance of knowledge about our insects.

Though the descriptions themselves are a small step towards the immense task of describing Australia’s insects, it was inspiring to see the students and their communities really engage with the process and build a connection with their local insects, and an appreciation for these tiny, often-overlooked wasps. We hope this project plays a role in inspiring the next generation of budding entomologists and taxonomists in Australia.

References

1. Stork, N.E., How Many Species of Insects and Other Terrestrial Arthropods Are There on Earth? Annual Review of Entomology, 2018. 63(1): p. 31-45.

2. Song, C., et al., Bee Sting-Inspired Inflammation-Responsive Microneedles for Periodontal Disease Treatment. Research (Wash D C), 2023. 6: p. 0119.

3. Mika, N., H. Zorn, and M. Rühl, Insect-derived enzymes: a treasure for industrial biotechnology and food biotechnology. Adv Biochem Eng Biotechnol, 2013. 136: p. 1-17.

4. Galli, M., et al., Can biocontrol be the game-changer in integrated pest management? A review of definitions, methods and strategies. Journal of Plant Diseases and Protection, 2024. 131(2): p. 265-291.

5. Gorb, S.N. and E.V. Gorb, Insect-inspired architecture to build sustainable cities. Current Opinion in Insect Science, 2020. 40: p. 62-70.

6. Zhang, Y., A. Reid, and J.F.C. Windmill, Insect-inspired acoustic micro-sensors. Current Opinion in Insect Science, 2018. 30: p. 33-38.

7. Suzuki, K., et al., Development of water surface mobile robot inspired by water striders. Micro & Nano Letters, 2017. 12(8): p. 575-579.

8. Engel, M.S., et al., The taxonomic impediment: a shortage of taxonomists, not the lack of technical approaches. Zoological Journal of the Linnean Society, 2021. 193(2): p. 381-387.

9. Slater‐Baker, M.R., et al., First record of miracine parasitoid wasps (Hymenoptera: Braconidae) from Australia: molecular phylogenetics and morphology reveal multiple new species. Austral Entomology, 2022. 61(1): p. 49-67.

10. Navarro, P. and F. Gallardo, Host instar preference of Mirax insularis (Muesebeck) (Hymenoptera: Braconidae), a koinobiont parasitoid of Leucoptera coffeella Guerin-Meneville (Lepidoptera: Lyonetiidae). Journal of Agriculture- University of Puerto Rico, 2009. 93: p. 139-142.

11. Penteado-Dias, A.M., New species of parasitoids on Perileucoptera coffeella ( Guérin-Menèville) (Lepidoptera, Lyonetiidae) from Brazil. Zoologische Mededelingen, 1999. 73: p. 189-197.

12. Slater-Baker M-R, Guzik M, Rodriguez J, Howe A, Woodward A, Ducker N, Fagan-Jeffries E (2025) Three new species of Australian miracine parasitoid wasps collected by regional schools as part of the Insect Investigators citizen science project (Hymenoptera, Braconidae, Miracinae). Journal of Hymenoptera Research 98: 19-45. https://doi.org/10.3897/jhr.98.137806

The first Red List of Taxonomists in Europe is calling for the support of insect specialists

The Red List of Taxonomists portal, where taxonomy experts in the field of entomology can register to help map and assess expertise across Europe, in order to provide action points necessary to overcome the risks, preserve and support this important scientific community, will remain open until 31^st October 2021.

About 1,000 insect taxonomists – both professional and citizen scientists – from across the European region have already signed up on the Red List of Taxonomists, a recently launched European Commission-funded initiative by the Consortium of European Taxonomic Facilities (CETAF), the International Union for Conservation of Nature (IUCN) and the scholarly publisher best-known for its biodiversity-themed journals and high-tech innovations in biodiversity data publishing Pensoft.

Insect taxonomists, both professional and citizen scientists, are welcome to register on the Red List of Taxonomists portal at: red-list-taxonomists.eu and further disseminate the registration portal to fellow taxonomists until **31^st** October 2021.

Within the one-year project, the partners are to build a database of European taxonomy experts in the field of entomology and analyse the collected data to shed light on the trends in available expertise, including best or least studied insect taxa and geographic distribution of the scientists who are working on those groups. Then, they will present them to policy makers at the European Commission.

By recruiting as many as possible insect taxonomists from across Europe, the Red List of Taxonomists initiative will not only be able to identify taxa and countries, where the “extinction” of insect taxonomists has reached a critical point, but also create a robust knowledge base on taxonomic expertise across the European region to prompt further support and funding for taxonomy in the Old Continent.

On behalf of the project partners, we would like to express our immense gratitude to everyone who has self-declared as an insect taxonomist on the Red List of Taxonomists registration portal. Please feel welcome to share our call for participation with colleagues and social networks to achieve maximum engagement from everyone concerned about the future of taxonomy!

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Read more about the rationale of the Red List of Taxonomists project.

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Follow and join the conversation on Twitter using the #RedListTaxonomists hashtag.

Recruiting participants to the first European Red list of insect taxonomists

Recruiting participants to the first European Red list of insect taxonomists

Contributors will enable the EU to take action to plug in the essential scientific knowledge to address insect declines

The ‘Red List of Taxonomists’ initiative, funded by the European Union, launches its registration portal, where professionals and citizen scientists are called to register on. The purpose is to build a database of European taxonomy experts in the field of entomology, the biological discipline dedicated to insects. The analysis of these data will elucidate the trends in available expertise, thereby forming the basis of key recommendations for policy makers to further allocate necessary efforts and funds to support taxonomists’ work and contribute to protecting European biodiversity and beyond.

Globally, insect populations have been catastrophically plummeting over the last decades. According to the first major Europe-wide survey of honeybee colonies, conducted in 2013, some European countries lost as many as one-third of their colonies every winter. On the other hand, estimates state, the European agriculture industry alone ‘owes’ at least €22 billion per year to honey bees and wild bees, in addition to many species from other insect orders, as together they ensure pollination for over 80% of crops and wild plants in Europe.

Insect pollination of plants is an irreplaceable service to people
**Photo:** Lenka Z (pexels)

The health of European pollinators on species and population level and other insects essential in our ecosystems strongly relies on our ability to rapidly turn the growing awareness about these worrying trends into swift, decisive actions. These decisions are crucial to mitigate the negative impacts of these alarming trends in human activities, mainly industrial agriculture. Taxonomists – the people who can identify, discover and monitor insect species – have a decisive role to play.

Often specialised in specific insect groups, they can investigate the diversity and abundance of insects. To a great concern, the numbers of trained insect taxonomists seem also to be fast declining. There is the real danger of losing numerous species before we get the chance to even learn about their existence!

On a more positive note, while species extinction is an irreversible event, certain taxonomic expertise can be nourished and ‘brought back to life’ if only we have the data and analyses to bring to the attention of the relevant education institutions, governments and policy-makers, so that the necessary resources are allocated to education, training, career support and recognition.

This is how the ‘Red List of Taxonomists’ project, an initiative by the organisation uniting the most important and largest European natural science collections (CETAF), the world’s authority on assessing the risk of extinction of organisms: the International Union for Conservation of Nature (IUCN) and the scientific publisher with a long history in the biodiversity and ecology fields: Pensoft, and funded by the European Commission, comes into play. Launched earlier this year, the ‘Red List of Taxonomists’ aims to compile the very first inventory of taxonomic expertise for any group of organisms, understandably choosing the class of insects.

Bringing together scientists, research institutions and learned societies from across Europe, the project will compare the trends and extract recommendations to overcome the risks, while preserving and further evolving the expert capacity of this scientific community.

The precious skills of insect taxonomists must be preserved and developed
Photo: Grafvision, Adobe Stock

As partners of the project, CETAF and IUCN are mobilising experts from their respective networks to populate the ‘Red List of Taxonomists’ database. In parallel, Pensoft is extracting further data of authors, reviewers and editors from taxonomic publications across its portfolio of academic journals and books, in addition to major relevant databases working with scholarly literature.

To reach experts, including professionals not necessarily affiliated with partnering institutions, as well as citizen scientists, the team is now calling for European taxonomists to register via the newly launched ‘Red List of Taxonomists’ portal and provide their data by filling a short survey. Their data will not be publicly available, but it will be used for in-depth analyses and reports in the concluding stage of the project, scheduled for early 2022. The collection of the data is in full compliance with GDPR requirements.

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Insect taxonomists, both professional and citizen scientists, are welcome to register on the Red List of Taxonomists portal at: red-list-taxonomists.eu and further disseminate the registration portal to fellow taxonomists.

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Follow and join the conversation on Twitter using the #RedListTaxonomists hashtag.

A Red List of insect experts in Europe

New EC-funded project will identify trends in taxonomic expertise across Europe to identify gaps in expert knowledge

Europe’s largest bumblebee, *Bombus fragrans*, is currently assessed as an Endangered species.
Illustration by Denitza Peneva.

Insects are the largest taxonomic group in the animal kingdom. Three out of four described animal species belong to the class Insecta. They are widely distributed in terrestrial and aquatic environments. Indispensable to the ecosystem, insects drive key processes such as pollination, decomposition, soil formation and supply an essential part of the food webs.

Yet, insect populations have been catastrophically plummeting. For example, recent studies have shown a decrease of 75% of insect biomass in German Nature Reserves in less than 30 years, and the situation is probably no less dramatic anywhere in Europe. According to the European Red List of threatened species, one in ten bee species and a quarter of all grasshopper species are at risk of extinction. As it becomes clear how dependent on insects our ecosystems and our economy are, people gradually realise the dramatic consequences of insect decline.

One less known aspect of this global crisis is on the agenda today: the shrinking number of insect taxonomists, the scientists on whose highly specialised skills we depend to obtain knowledge on the diversity of organisms. Without taxonomists, no study of species or ecosystems would be possible, as we would not be able to recognise what biodiversity we are losing.

Here is why the European Commission has funded a new project to embark on the pioneer task to assess the status of taxonomic expertise on insects in Europe. A “Red List” of taxonomists will be compiled for the first time for any group of organisms. The effort is being undertaken by a diverse and interdisciplinary team of experts, including the organisation uniting the most important and largest European natural science collections (CETAF) and the world’s authority on assessing the risk of extinction of organisms: IUCN (the International Union for Conservation of Nature).

As with typical European Red List (ERL) assessments, normally applied to species level, the project involves the collection and evaluation of the available information about the number, location, qualification and field of specialisation of insect taxonomists and the application of systematic criteria to assess the risk of their “extinction”. This concept has never been applied to scientists before, but by using the ERL analogy, the project aims to combine those groups of insects and those countries that bear the highest risk of losing the associated taxonomic expertise and potential gaps.

Bringing together individual scientists, research institutions and learned societies from across Europe, the project will compare the trends and pull up recommendations to overcoming the risks, preserving and further evolving the expert capacity of this scientific community. Unlike species extinctions, the loss of taxonomic knowledge is reversible, especially when the needs are clear and the necessary resources are invested in education, training, career development and recognition.

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Additional information:

CETAF is the European organization of Natural History Museums, Botanic Gardens and Research Centers with their associated natural science collections comprising 71 of the largest taxonomic institutions from 22 European countries (18 EU, 1 EEA and 3 non-EU), gathering expertise of more than 5,000 researchers. Their collections contain a wide range of specimens including animals, plants, fungi and rocks, and genetic resources which are used for scientific research and exhibitions. CETAF aims to promote training, research collaborations and understanding in taxonomy and systematic biology as well as to facilitate access to our natural heritage by sharing the information derived from the collections.

IUCN (the International Union for Conservation of Nature) is a membership Union composed of both government and civil society organisations. It harnesses the experience, resources and reach of its more than 1,400 Member organisations and the input of more than 17,000 experts. This diversity and vast expertise makes IUCN the global authority on the status of the natural world and the measures needed to safeguard it.

Pensoft is an independent academic publishing company and technology provider, well known worldwide for its novel cutting-edge publishing tools, workflows and methods for text and data publishing of journals, books and conference materials. Through its Research and Technical Development department, the company is involved in various research and technology projects. Founded in 1992 “by scientists, for scientists” and initially focusing on book publishing, Pensoft is now a leading publisher of innovative open access journals in taxonomy and biodiversity science.