The discovery of a previously unknown insect species in the southern Himalayas challenges long-held assumptions about where such life can exist, revealing that remote mountain slopes harbor undiscovered biodiversity crucial for global research.
A New Species Defies Tropical Assumptions
A newly identified Himalayan wormlion challenges the idea that its genus lives only in the tropics, raising the possibility of undiscovered relatives on nearby mountain slopes. This finding comes from a team led by researchers at Dali University in China, who described the new species, Vermitigris tsangyanggyatso, in a recent paper published in the open-access journal ZooKeys.
The adults collected in Yadong County revealed a species that is unusually large for its group. Their bodies measure up to 19.5 millimeters, about three-quarters of an inch, with wings nearly 16 millimeters, or 0.63 inches, long. A uniformly yellowish-brown to reddish-brown abdomen distinguishes Vermitigris tsangyanggyatso from its closest relatives, which have light and dark rings or longitudinal stripes.
Larvae belonging to this group were first collected in southern Xizang in 1978, but without adult flies to examine, scientists could not confirm their identity. Adult specimens collected during a 2025 expedition to Yadong County have now helped resolve that 48-year mystery.
Evolutionary Convergence and Hunting Strategies
Wormlions belong to Vermileonidae, a family of brachyceran, or short-horned, flies. They are the only known family of flies whose larvae capture prey by constructing these pits. Their hunting strategy evolved independently of the similar traps built by antlions, an example of evolutionary convergence.
The researchers’ search for adult wormlions had already taken years of patient work with another species. In 2015, while searching for pit-building antlions on Cangshan Mountain in Dali, China, they discovered an unfamiliar larva that they found particularly interesting. However, because the adults have an extremely short lifespan, they failed for many years to determine its identity.
It was not until 2024 that they finally obtained adults through artificial rearing in the laboratory. It turned out to be a new species, which they named Vermiophis cangshanensis. This first discovery therefore took nine years. Since then, they have paid close attention to wormlions wherever they encounter them.
Fully grown larvae are larger than the adults, reaching 20 millimeters, or about 0.79 inches, in length. They construct pits by using their mandibles to dig into the soil and shape it into a funnel. The pit’s walls are lined with tiny pebbles that help trap prey falling into the central depression.
The Fragility of High-Altitude Ecosystems
This discovery underscores the hidden richness and fragility of high-altitude ecosystems, which are often overlooked in global conservation efforts. Natural World Heritage sites cover less than one per cent of the Earth’s surface, yet protect exceptional biodiversity, including almost 20,000 globally threatened species.
World Heritage offers an established framework for advancing global biodiversity goals. Achieving the Kunming–Montreal Global Biodiversity Framework’s ambition to halt and reverse biodiversity loss by 2030 requires countries to make full use of existing institutions, knowledge and commitments.
The World Heritage Convention connects the conservation of globally important heritage with international cooperation, monitoring and support. Cultural and mixed sites also sustain biodiversity through cultural landscapes, traditional practices and enduring relationships between people and nature.
Implications for Biodiversity Planning
Of the 142 national reports screened by IUCN regarding the Global Biodiversity Framework, 56 explicitly referred to World Heritage. References appeared in national target entries associated with all 23 targets of the Framework, demonstrating broad recognition of its relevance.
World Heritage can help countries advance both the ecological representativeness and quality of protected and conserved areas. Identifying areas of potential Outstanding Universal Value can inform efforts to address ecological and geographic gaps, while nominations and extensions can encourage stronger protection.
Management requirements, monitoring and capacity building can support conservation effectiveness, with buffer zones and wider landscape approaches helping strengthen connectivity. Strengthening these ties requires meaningful participation by Indigenous Peoples and local communities.
Data shows that bringing nature and culture together across biodiversity goals offers opportunities to engage the culture sector in biodiversity action. This is particularly vital in regions like the Himalayas, where traditional practices have sustained conservation for generations.
Conservation Gaps in the Himalayas
While the discovery of Vermitigris tsangyanggyatso highlights the hidden richness of high-altitude ecosystems, the region faces significant conservation pressures. Endemic species like the newly described wormlion are particularly vulnerable to habitat loss driven by climate change, agricultural expansion, and infrastructure development. Conservation assessments indicate that a substantial proportion of Himalayan flora and fauna lack sufficient data to determine their threat status, creating a major barrier to effective planning.
International frameworks such as the Convention on Biological Diversity emphasize the need for expanded protected area networks to cover key biodiversity areas. In the Himalayan region, gaps in coverage are evident, with some of the most biologically diverse zones, including high-altitude insect habitats, falling outside formal protection. Strengthening connectivity between existing reserves and establishing new sites based on rigorous biodiversity surveys are essential steps to safeguard species like Vermitigris tsangyanggyatso before their full ecological roles and distributions are understood.
Resolving a 48-Year Larvae Mystery
Scientists have finally solved a decades-long identification puzzle regarding wormlion larvae collected in 1978. Larvae belonging to this group were first collected in southern Xizang in 1978, but without adult flies to examine, researchers could not confirm their identity. A breakthrough occurred during a 2025 expedition to Yadong County, where adult specimens were collected. These specimens helped resolve the 48-year mystery, confirming the larvae’s place within the newly described species Vermitigris tsangyanggyatso. This discovery validates a long-standing gap in entomological records and confirms the presence of this species in the high-altitude southern Himalayas.
The resolution builds on years of patient fieldwork by the research team. In 2015, while searching for pit-building antlions on Cangshan Mountain in Dali, China, the team discovered an unfamiliar larva that they found particularly interesting. However, because adult wormlions have an extremely short lifespan, they failed for many years to determine its identity. It was not until 2024 that they finally obtained adults through artificial rearing in the laboratory. It turned out to be a new species, which they named Vermiophis cangshanensis. Since then, they have paid close attention to wormlions wherever they encounter them, leading to the eventual collection of the adults needed to name and describe Vermitigris tsangyanggyatso.
Sources
- Scientists Discover a Strange Insect in the Himalayas Where No One Expected It
- Nepal
- Making World Heritage count for global biodiversity goals
Photo: Vyacheslav Argenberg (CC BY 4.0)
