A new non-native species to Colorado

While visiting a local community garden in Boulder I just happened to check the windowsills for signs of bees. Low and behold, this fuzzy nugget had gotten trapped and succumbed to the spring heat. After a quick glance I immediately noticed its 'horns' and though uh oh... Took it back to the lab and sure enough, Osmia cornifrons! This is one of the first records of this introduced species to the state! I know lots of others are on their way, but still, it's sad to see that they're here and reproducing most likely.