We’ve been raising blue orchard mason bees for several years (Osmia lignaria) with its characteristic iridescent blue abdomens. For the last few years, we’ve seen an additional mason bee showing up in our tubes. Can you identify it? A program on my phone identified it as Osmia cornifrons, which I’ve read is a non-native that was introduced to the US from Asia in the ‘60s or 70’s. But I’ve also read that it can be confused with Osmia taurus, which is another non-native mason bee that entered the US more recently. Their coccoons also look different when removed from their tube. They’re whiter than the brown lingnaria coccoons, and more tightly packed (I can send photos if necessary, as well as additional photos of the bee). After you identify it, what do you suggest we do with these bees and cocoons? I’ve read that there’s a question of whether they may be outcompeting native mason bees for resources, especially taurus bees. Do I need to kill the non-native bees to protect the native ones? Or are they already endemic, and just happened to find a home in our mason bee house, and I should clean and release their cocoons like the lingnaria mason bees? Thanks for your advice.