In a new study published this month in Insect Systematics and Diversity, researchers have synonymized the bumble bee species Bombus fernaldae with Bombus flavidus, establishing the latter, a cuckoo that parasitizes other bumble bee colonies, as the most broadly distributed bumble bee species of any kind in the world. Shown here is a Bombus flavidus male from Khanimei, northwestern Siberia. (Photo by Pierre Rasmont)