The Forestry Forum

I was up on the scafold looking at brickwork that I have to do, and there are busy little wasps flying back and forth hauling things to their nests . One was carrying grass blades a bit longer than himself and stuffing them into a small crack where two 2xs meet .  He was cutting this grass because it was green and moist .   What kind of wasp builds with grass ?  I know of paper wasps because we have lots of them . and then there is the mud daubers that build houses out of mud.  I have never seen a wasp build with grass.

Don
Same here.
Last year I first noticed them, and this year there are more of them. I searched on 'wasp grass' and came up with a few hits on "grass-carrier wasp", one of which is from Iowa State

Grass-Carrier Wasp (http://www.ipm.iastate.edu/ipm/iiin/node/144/print)

Mine are in the slider window tracks and make a mess plugging them up. Seem to be a black wasp doing the carrying.

The one at my place was redish brown