Images

Another shot of Andrena cressonii for the files..

This is a west coast Andrena....found, in this case, in Redwoods National Park right along the coast. I hope to get some more shots of the back and sides which have lovely patches of green hairs, an unusual color for bees in North America.

The male of the previous shot, note the metallic blue overtones to the integument (skin) of this bee....an uncommon characteristic in the genus Andrena. Also note the stacking artifact where the antennae arches across the top of the head. This can be corrected for in the stacking process, but, frankly, we don't have the time and few people notice such things.

Andrena distans...this girl has been dipping into the wild geranium pollen to feed her babies. Photograph by Dejen Mengis.

Probably a specialist on bindweed pollen, this group of bees runs from the Southwestern states down into southern South America. Note the expanded femurs of this male, interesting to speculate as to why. From the Packer Lab.

Andrena wellesleyana is one of the many Andrena species. It is also one of a number of species where the males have extensive yellow on their faces while the females are completely black. I the bulk of species both males and females have black faces.

Andrena accepta, female, Badlands National Park, South Dakota

Badlands national Park, South Dakota

A specialist on early spring blooming brassicas. This one was collected just a few days ago along a very urbanized and disturbed section of Indian Creek in Beltsville, Maryland. Other than an overstory of trees all the herbaceous material growing seem to be invasive plants.

Collected by Ellison Orcutt, in Caroline County Virginia this small spring Andrena is a fan girl of mustards, particularly the spring mustards that are native and occur in wooded and semi-shaded areas in the spring, often very early in the spring.

A small bee, whose female is a gatherer of pollen from native mustard plants. However, this is the male as can be told by counting the number of antennal segments (13) and by the fact that it has a bright white clypeus. Which, with very very rare exceptions is something that only male Andrena have. This is Andrena arabis.

One of many small Andrenas out in the spring in Eastern North America. This one favors the pollen of brassicas. Photoshopping by Thistle Droege, photograph by Dejen Mengis.

Here is the male of the recently posted female Andrena arabis. The male illustrates what happens periodically with some of the males of this largely brown, dark group of mining bees which is that a few of them have a yellow, or in this case and off-white, clypeus. Surely this must be some sort of sexual signal as the females almost never have these markings.

The red maple, Acer rubrum, often one of the most dominant trees in deciduous woods in the East. It blooms very early in the spring and provides pollen and nectar to the set of bees, and flower flies, that come out early.

The red maple, Acer rubrum, often one of the most dominant trees in deciduous woods in the East. It blooms very early in the spring and provides pollen and nectar to the set of bees, and flower flies, that come out early.

Acmaeodera ornata,

Bee/Yellow Jacket mimic! Nectaring on goldenrod and aster, Beltsville, Maryland. Thanks to Chris Thompson for the identifications.

Lovely wasp from Kruger National Park. Again, not being a wasp person, I don't know the species. The group may be the sand wasp (Bembicini) . Photos by Anders Croft.

This male was captured in the Great Basin National Park, Nevada as part of a survey of bees in high elevations vulnerable to climate change. Photo taken by Colby Francouer.Canon Mark II 5D, Zerene Stacker, 65mm Canon MP-E 1-5X macro lens, Twin Macro Flash, F5.0, ISO 100, Shutter Speed 200

Male Agapostemon's almost all have this same pattern, Metallicy green on the head and thorax and then striped yellow and black on the abdomen. Females uniformly don't have yellow anywhere. Why is good question as this male yellowness syndrome runs throughout the bee kingdom, cutting across families.

Another bee associated with deep sandy soils. This one also found in a study sand pit reclamation in Anne Arundel County in Maryland. Amazing to think that such metallic green bees are all around us having done their business for millions of years.