Sand wasps can be seen over sandy areas where they dig their burrows to lay their eggs. Their activity on the surface is a clear sign of their presence in a park.
The female digs her own burrow, where she stores prey that she has paralyzed with her venom and lays an egg. After they hatch, the larvae eat the prey and complete their development in a cocoon made of sand and silk.
Research conducted by Ville de Montréal experts show that they can sting, but are very unlikely to because these wasps are not aggressive and seek to avoid humans when we disturb them.
Gatineau is using the same strategy as Montréal to control sand wasp populations:
Sand wasps are useful because they help us get rid of pesky insects like flies. A single wasp can capture hundreds of flies a year. Also, they help pollinate flowers and are part of the biodiversity we are committed to protecting.