|Sand Digger Wasp Bicyrtes quadrifasciatus flicking sand|
|Sand Wasp carrying a paralyzed stinkbug into its burrow|
|Sand Wasp pupa next to its cocoon|
|Sand Wasp cocoons with paralyzed stinkbug prey|
I suspect that Sand Digger Wasps are actually increasing in numbers not only because we have increased what once was an uncommon habitat (sunny sand lots with no plants growing), but because we have so many stinkbugs. I think they are benefiting because they are now preying on the invasive exotic Marmorated Stinkbugs that are not only a nuisance in our homes, but cause great agricultural harm. People may have noticed how much of a problem and how numerous these invasives were before, and how much fewer we have now in certain locales. As I have said, sand wasps are very beneficial if we can just get them to do their good work in other locations.
More on them on the Capital Naturalist YouTube Channel:
|Satellite Fly, a Miltogrammine kleptoparasite fly of these wasps|