I love this photo sent in by Aram Frangulyan of Auburn, WA. The flower is so bright and cheerful, it makes me happy about fall. Aram writes:
Snapped a bumble bee on a dahlia at the Point Defiance rose garden on September 7th. Did not think that dahlias were all that interesting to the pollinators, but apparently some cultivars are attractive enough. I suppose I’ve picked up the habit of only photographing blooms with insects on them. 🙂
I have to say, I do the same because the insects complete the picture. This one contains two bumble bees, probably Bombus vosnesenskii, although these are hard to distinguish from Bombus caliginosus even with collected specimens. A growing trend is to list them by their subgenus, Pyrobombus, which is the same in either case.