Perry County, Pennsylvania, USA April 9, 2009 Size: 20 mm
Yellow hairs on T2 rule out B. impatiens, yellow hairs on head rule out B. griseocollis right?
An interesting observation is that B. bimaculatus has been the first bumble bee I have seen each spring for the past 2 years (this would be the third). Their coming out earlier than other species must give them an advantage