My name is Dr Margriet Dogterom and am the founder and owner of Beediverse. I write this blog for all who love bees and who want to learn more about these wonderful creatures.
This web site has some beautiful photos of wasps and bees.
Great pictures. I am not too sure who the culprit is here. Several mason beekeepers have sent me pictures with cotton in and around nesting tunnels. We are still searching for the culprit!
Yes, the large yellow grubs look like beneficial wasps. Clean out the rest of the channels, and close up the nesting tray. Set out with cleaned trays ready for next spring. Margriet
I put boxes out for summer bees this year but got none. I did however get loads of Mason Wasps. I retrieved the cocoons from the boxes and found that the cocoons look like little cigars with a dark brown color. They are brittle compared to Mason Bee cocoons and contain Larva. Do they overwinter as larva and develop next summer? Can they be stored as Mason Bees? Thanks Norm Z.
Hi- I have seen these before, but never knew that these were wasps. If in the fall it is still a soft-bodied undeveloped wasp, I would expect them to develop in early summer months as temperatures warm up. This is where the petri-dish comes in handy. Place cocoons in a petri-dish adjacent to a wet paper towel. Keep it on the countertop and see what emerges. Thanks Margriet
I just unwrapped a straw from this summer and in it I found 4 compartments separated with Sticky reddish Brown resin. In each compartment attached to the resin plug was a glob of soft yellowish material with a white larva which seemed to be attached to the glob on both ends.
These were in a straw suited for summer bees. The larva varied in size from about 1/8th to ¼ inch long.
Would you have any idea what these might be? This is a photo of the resin and the larva. Thanks Norman Z.
Thank you for the pictures Norm. I do not know what this is. It looks like the resin is anchored in the resin. If you can, keep it in a petri dish with some moisture and see what emerges. Margriet