Images

More shots of a queen Bombus affinis...the newly minted endangered Bumble Bee. This specimen is from the National Collection at the Smithsonian and was collected in Racine, Wisconsin in 1965 when times were easy for this species. Collected by L.W.

Bombus ashtoni! This is news. This species of bumble bee is nest parasite. They take over the nests of other bumble bees and use the host's workers to produce their progeny. This one is special because its known hosts are B. affinis (the endangered Rusty-patched Bumble Bee) and B.

Philadelphia, Pennsylvania, collected at Morris Arboretum by Stephanie Wilson

There are a lot of bumble bee species out there, about 50 species or so north of Mexico. Some arguments regarding species boundaries, but, bottomline is there are more than most people would suppose. Here is Bombus bifarius. Another common western bee, one a bit more likely to nest above ground than some of the others....sometimes even showing up in bird houses.

Bee of Yosemite. This is Bombus bifarius, a male (see all the yellow on the face shot? that is a good indication of a male bumble bee....not all species show this pattern, but it is a general trend. Females tend to have a nearly all black face with perhaps a topknot of yellow hairs, but I digress).

Bee of Yosemite. This is Bombus bifarius, a male (see all the yellow on the face shot? that is a good indication of a male bumble bee....not all species show this pattern, but it is a general trend. Females tend to have a nearly all black face with perhaps a topknot of yellow hairs, but I digress).

The head of Bombus bimaculatus, our earliest spring bumblebee, unlike some of the other species it is still very common in most parts of the eastern United States and by late June/July you can see that the nests are producing males and beginning to wind down the season for the species. This one was collected by Laura Russo somewhere near State College Pennsylvania.

A western bumble bee. Bombus californicus is a reasonably uncommon dark-winged Bumble bee that ranges from the Rockies to the West and whose populations may have been knocked back by the same pathogen suite as the gone or nearly gone species such as B. affinis and B. franklini.

Check the eyes out on this male Bumble Bee. We already put up a spread of female B. fraternus, but the male has some pretty unique features for bumble bees. For one, the eyes are HUGE, they nearly meet at the top of the head. Only a few other bumbles do that...and the face is extremely short, with the mandibles almost joined to the bottom of the eyes.

This is one of the species that seems to be holding its own in terms of numbers. This worker has a corbicula on its tibia full of a mix of pollen and nectar

Bumblebees are so charismatic. Here is a queen form downtown Washington D.C. very near the mall. Canon Mark II 5D, Zerene Stacker, Stackshot Sled, 65mm Canon MP-E 1-5X macro lens, Twin Macro Flash in Styrofoam Cooler, F5.0, ISO 100, Shutter Speed 200,

Bumblebees are so charismatic. Here is a queen form downtown Washington D.C. very near the mall. Canon Mark II 5D, Zerene Stacker, Stackshot Sled, 65mm Canon MP-E 1-5X macro lens, Twin Macro Flash in Styrofoam Cooler, F5.0, ISO 100, Shutter Speed 200,

Badlands National Park, South Dakota

The most common of all the eastern Bumblebees, Bombus impatiens, is something of the cow/chicken/pig of the non-honeybee world. Now used throughout the continent to fertilize plants in greenhouse cultivation. Note the whitish rather than yellowish light colored hairs and that the first segment of the abdomen has light hairs, but remainder are black.

People think that identifying Bumble Bees are easy. They are big, there are "guides" that show the color patterns...so what could go wrong....well....things like this specimen of Bombus impatiens. It should have NO red / brown on it, but this specimens has 2 whole tergites that are reddish brown.

From Yellowstone National Park comes the powerful Bombus insularis, and this parasite of other bumblebees is one bad ass bee. collected as part of a high elevation study of the Alpine areas throughout the United States, with the idea that climate change first reaches the tops of things and the bottom of things (oceans that is).

A hulking bumble bee nest parasite. Bombus insularis is another example of alternative bumble bee lifestyles. Usurping nests of other bumbles to raise their young. This one is found throughout the northern parts of North America and down the western mountains, but not the Appalachians.

A bit bedragled specimen of the bumble bee B. melanopygus from Yosemite National Park. We weren't quite up to speed on our hair dressing when we prepped this specimen. Part of Claire Kremen's study of the bees of the park. Photo by Anders Croft.

Tightly wrapped in fur-like orange hair, this lovely western bumblebee was captured at the far edge of its range in Badlands National Park in South Dakota. Near the Black Hills, an island of Rocky Mountain type habitat in a sea of prairie, the Badlands are receivers perhaps of bees that otherwise would not inhabit prairie habitats. Photo by Brooke Alexander.

And now we present a mystery. Here is a bumble bee collected in northern Virginia in a blue vane trap as part of T'ai Roulston's research group looking at bee populations in restored fields. The question at hand is what species is it? Its a clean, unworn bee, appears to be the size of large worker or perhaps a small queen and it fits some characteristics of B.

More from last year's expedition to Chile with Laurence Packer. Such a lovely country...we camped in a new place every day. Ping ponging from the Andes to the Coast sleeping along the road or in open pastures. Lovely people, easy travel, no problems with law enforcement people. This is a Caenohalictus species of some kind.