My first male Osmia cornuta for 2025. This is one of the bees that has shrunk the most in size over the past few decades. 40 years ago it weighed on average 67 mg, now it has shrunk down to 54 mg, or a ~20%. Fore more details on Cazorla'a shrinking bees see our study here
https://doi.org/10.1002/ecy.4128