Urban Discovery in Prospect Park: NYC Traps for New Insect Species and the DNA Barcoding Quest

In the middle of Prospect Park, Brooklyn, a field reporting team joins senior Vox correspondent Benji Jones as he helps set a large scale insect trap to search for a species new to science. The episode centers on parasitoid wasps and the scuttle flies that dominate many insect surveys, highlighting the idea of dark taxa, where most species remain undescribed. The team explains why urban ecosystems can reveal undiscovered biodiversity and how DNA barcoding can act like a fingerprinting system for species, guiding researchers toward novelty. The conversation also covers how discovery differs from description, the role of museums in naming new species, and how the public can participate in scientific naming ideas. The episode closes by reflecting on discovery in the age of fast sequencing and its implications for biodiversity education and conservation.

• In urban parks, researchers trap insects to uncover potentially new species
• Dark taxa describe many undescribed insect groups, especially flies
• DNA barcoding compares specimens to a global database to flag novelty
• Naming a new species requires formal description and museum comparisons

Overview and setting

The podcast follows Benji Jones, a Vox senior correspondent focusing on biodiversity and environmental topics, as he documents a field reporting trip in New York City’s Prospect Park. The aim of the day is to place a passive insect trap in the city’s backyard and to see whether local biodiversity harbors an insect new to science. The conversation emphasizes the importance of insects in ecosystems and frames the project as a demonstration of how discovery can occur even in iconic urban landscapes. The episode blends field reporting with expert commentary to illuminate the process and stakes of modern taxonomy and biodiversity research.

The trap, the plan, and the big idea

The trap itself is a simple yet carefully designed device: a sheet of black mesh forms the core, supported by tent poles, with white mesh draping above to create an arc that funnels insects toward a small bottle filled with ethanol. Insects fly upward and are guided into collection vessels where DNA remains intact for later analysis. The goal is to minimize capturing large flying insects like monarch butterflies while biasing toward tiny flies and wasps, often under described in the scientific literature. This setup illustrates a scalable, passive sampling approach that can be deployed across multiple urban sites to assemble a representative snapshot of local insect diversity.

Dark taxa and the unknown

A pivotal concept discussed is dark taxa: animal groups in which most species have not yet been described by science. The discussion foregrounds scuttle flies (a family of flies in the Foridae) as a prime example of a taxa with enormous undiscovered diversity. The host describes how researchers like fly expert Emily Hartop have demonstrated that such groups can yield hundreds of new species when targeted with appropriate sampling and analyses. The idea reframes biodiversity as not just about charismatic megafauna but about myriad small organisms that quietly underpin entire ecosystems.

DNA barcoding and the path from discovery to description

DNA barcoding is presented as a practical, modern method to screen collected specimens. By sequencing a standard portion of the genome, researchers create genetic fingerprints that can be compared against large public and private databases maintained by institutions like the Centre for Biodiversity Genomics in Canada. A match to known species suggests a routine identification, while a novel barcode can flag potential new species. However, barcoding alone does not prove novelty; it serves as a starting point. Official description requires thorough taxonomic work, museum comparisons, and formal publication to name the new species and establish its distinctions from described relatives.

Discovery, description, and the public role in science

The host and guests emphasize two distinct stages in taxonomy: discovery (the initial finding of an organism that may be a new species) and description (the formal taxonomic process to name and describe the species). Advances in genetic sequencing and global databases have accelerated discovery, enabling passive traps and high throughput screening. Yet naming a species depends on rigorous comparison with existing museum specimens, literature, and taxonomic expertise. The conversation also touches on historical patterns in science, including the shift away from extractive colonial practices toward more inclusive, modern taxonomy that acknowledges and engages with local researchers and the public. The episode ends with invitations for listeners to contribute naming ideas for any newly discovered taxa, reflecting a broader trend toward open, participatory science.

Implications for urban biodiversity and education

Beyond the thrill of discovery, the episode highlights why urban biodiversity matters. If new species can be found in the middle of the largest city in the United States, it underscores how much remains to be learned about biodiversity in everyday environments. The project also serves as an educational exemplar, illustrating a pipeline from field sampling to genetic analysis to formal taxonomy, and it fosters public engagement by inviting community input into naming newcomers to science.

Concluding reflections

The hosts and guests reflect on the excitement and challenges of discovery in the modern era, where genetic tools increasingly shape how scientists perceive and catalog life. They reiterate that each insect species, no matter how small, can play a specific ecological role and contribute to a fuller understanding of biodiversity, ecosystem services, and the health of human environments. The episode closes with appreciation for ongoing fieldwork and a nod to the collaborative, increasingly data-driven future of taxonomy and biodiversity research.