Images

Blue Cohosh. A close up of one of the flowers of Caulophyllum thalictroides. A lovely spring perennial of rich deciduous woodlands. Picture and specimen taken by Helen Lowe Metzman. Howard County, Maryland.

Notice, in particular the lobed tip of the tongue in this shot. A Western Hemisphere group, with a good number of species. These are very fast fliers and, at least the North American species tend to be crepuscular and plant specialists, often associated with sandy/dune areas.

Centris...the tropical western hemisphere's answer to the Bumblebee. Bumblebees are absent from the Caribbean but bees of the genus Centris are of the same size and shape and fill the same floral niche muscling their way into large tropical flowers.

Bahamas, San Salvador Island, Collected by Dan Kjar

Cuba, GTMO, Guantanamo Bay

A lovely Centris from Puerto Rico, collected by Sara Prado

A lovely Centris from Puerto Rico, collected by Sara Prado

Some bumble bees are parasites. A common theme in the bee world...to the tune of about 20% of all the species. Why go to all that work gathering pollen when you can just lay your egg in someone else's nest. Then in an evolutionary spy vs.

A lovely slightly florescent orange bumble bee from Taiwan. So many combinations of color and form in each genus of bee! Photography Information: 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.

From the U.S. National Arboretum comes the now relatively uncommon Bombus fervidus. A species in delcine, but still present and how nice to have this one present right in Washington D.C. Pictures by Ashleigh Jacobs.

From the U.S. National Arboretum comes the now relatively uncommon Bombus fervidus. A species in delcine, but still present and how nice to have this one present right in Washington D.C. Pictures by Ashleigh Jacobs.

From the U.S. National Arboretum comes the now relatively uncommon Bombus fervidus. A species in delcine, but still present and how nice to have this one present right in Washington D.C. Pictures by Ashleigh Jacobs.

Bombus fraternus. The Southern Plains Bumble Bee. This crisp, handsome and short-faced bee suffers from lack of an adequate publicist. Thought, several other Bumble Bees in its clan, to be in decline from introduced pathogens. It gets little mention in the bee press.

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.

Cuba, Guantanamo Bay

Centris fasciata, female, GTMO, Cuba, June 2011

Centris fasciata, female, GTMO, Cuba, June 2011

Ceratina cockerelli, female

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.

A common Western bumblebee. This one comes via Glacier National Park as part of a survey of vulnerable areas in National Parks.

A common spring bumble bee, Bombus bimaculatus, one of the species of bumble bees that have not seemed to have declined since the introduction of Nosema bombi a parasite from Europe. This one was collected by Laura Russo near State College Pennsyvania.