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Native bee / wasp ID
(aussie.zone)
My small bee hotel established in 2021 has been a hit with the local population, usually fully occupied. I see many different native resin, leaf cutter and a few carpenter bees around. Lately, I've been seeing more of these bees or wasps show up. I'm having a great deal of trouble identifying them. Can anyone help me? It has a distinctive round abdomen, single pale yellow ring, and a tail coming out of the torso.
I’ve always been told bee hotels are harmful as they help spread illnesses?
I'd be interested in a source if you can find one. The only real concern I've read is about chemicals in the wood or materials.