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Melittobia staking out a mason bee house » Colin Purrington
I recently set up a mason bee house, and almost instantly attracted a parasitoid, a female Melittobia. She was so tiny that I first thought it was a thrips. But its behavior was odd and definitely not thripsy. The insect would linger near the holes that were being used by mason bees (Chelostoma philadelphi and Osmia …