Scientists have officially classified two Asian praying mantis species as invasive in Europe, warning they pose a significant threat to native wildlife by preying on pollinators and reducing native mantis populations.
- Asian mantises reproduce nearly twice as fast as native species
- They prey on pollinators and small protected vertebrates
- Citizen science projects help track their spread
What happened
Two Asian praying mantis species, Hierodula tenuidentata and Hierodula patellifera, have been formally recognized as invasive alien species in Europe after a decade of growing populations. These large, adaptable predators have been spreading rapidly across Mediterranean and continental regions and are now moving northward, aided by climate change and urban heat islands.
Their populations have surged because of high reproductive rates, with each egg case producing about 200 young—almost double that of Europe’s native mantis. This growth has brought them into frequent contact with native insects and vertebrates, raising ecological concerns. Their presence has especially impacted native mantis populations through lethal mating behaviors and predation on key pollinators and small protected species.
Why it feels good
Despite their invasive status, these mantises are visually striking creatures that have fascinated people for centuries, often regarded as mystical or intriguing in different cultures. Their presence in gardens and parks offers a chance to engage the public with nature and biodiversity, encouraging awareness around invasive species and ecosystem health.
The ongoing citizen science initiatives inviting the public to report sightings empower individuals to participate actively in monitoring efforts. This inclusive approach fosters a connection between people and nature, enhancing community involvement in protecting native wildlife and supporting scientific research.
What to enjoy or watch next
Researchers suggest that people can help limit the spread of these invasive mantises by removing their egg cases, especially during winter when they are easier to spot on leafless branches. Although domestic cats prey on these mantises, they also threaten native species, so careful balance in urban wildlife management is needed.
Looking ahead, scientists emphasize the importance of continued citizen science participation and monitoring, particularly on Mediterranean islands with unique endemic species. Watching how climate change influences the mantises’ range expansion will be crucial, offering insights into the broader effects of invasive species and environmental shifts.